J. A. Delaney, H. R. Thornton, J. F. Pryor, A. M. Stewart, B. J. Dascombe et al., Peak Running Intensity of International Rugby: Implications for Training Prescription, International Journal of Sports Physiology and Performance, pp.1-22, 2016.

P. E. Di-prampero, Sprint running: a new energetic approach, Journal of Experimental Biology, vol.208, issue.14, pp.2809-2816, 2005.
URL : https://hal.archives-ouvertes.fr/hal-01859289

G. Duthie, D. Pyne, and S. Hooper, Applied physiology and game analysis of rugby union, Sports Medicine, issue.13, pp.973-991, 2003.

G. Duthie, D. Pyne, and S. Hooper, Time motion analysis of 2001 and 2002 super 12 rugby, Journal of Sports Sciences, vol.23, issue.5, pp.523-530, 2005.

T. J. Gabbett, Influence of the opposing team on the physical demands of elite rugby league match play, Journal of Strength and Conditioning Research, vol.27, issue.6, pp.1629-1635, 2013.

T. J. Gabbett, D. G. Jenkins, and B. Abernethy, Physical demands of professional rugby league training and competition using microtechnology, Journal of Science and Medicine in Sport, vol.15, issue.1, pp.80-86, 2012.

M. R. Jones, D. J. West, B. T. Crewther, C. J. Cook, and L. P. Kilduff, Quantifying positional and temporal movement patterns in professional rugby union using global positioning system, European Journal of Sport Science, vol.15, issue.6, pp.488-496, 2015.

M. R. Jones, D. J. West, B. J. Harrington, C. J. Cook, R. M. Bracken et al., Match play performance characteristics that predict post-match creatine kinase responses in professional rugby union players, Medicine and Rehabilitation, vol.6, 2014.

R. Akenhead, D. French, K. G. Thompson, and P. R. Hayes, The acceleration dependent validity and reliability of 10 Hz GPS, Journal of Science and Medicine in Sport, vol.17, issue.5, pp.562-566, 2014.

D. J. Austin, T. J. Gabbett, and D. J. Jenkins, Repeated high-intensity exercise in a professional rugby league, Journal of Strength and Conditioning Research, vol.25, issue.7, pp.1898-1904, 2011.

N. Cahill, K. Lamb, P. Worsfold, R. Headey, and S. Murray, The movement characteristics of English Premiership rugby union players, Journal of Sports Sciences, vol.31, issue.3, pp.229-237, 2013.

A. J. Coutts and R. Duffield, Validity and reliability of GPS devices for measuring movement demands of team sports, Journal of Science and Medicine in Sport, vol.13, issue.1, pp.133-135, 2010.

B. Cunniffe, W. Proctor, J. S. Baker, and B. Davies, An evaluation of the physiological demands of elite rugby union using Global Positioning System tracking software, Journal of Strength and Conditioning Research, vol.23, issue.4, pp.1195-1203, 2009.

P. E. Di-prampero, Sprint running: a new energetic approach, Journal of Experimental Biology, vol.208, issue.14, pp.2809-2816, 2005.
URL : https://hal.archives-ouvertes.fr/hal-01859289

A. M. Edwards and T. D. Noakes, Dehydration: cause of fatigue or sign of pacing in elite soccer?, Sports Medicine, issue.1, pp.1-13, 2009.

J. Helgerud, L. C. Engen, U. Wisløff, and J. Hoff, Aerobic endurance training improves soccer performance, Medicine & Science in Sports & Exercise, p.7, 2001.

R. D. Johnston, T. J. Gabbett, A. J. Seibold, and D. G. Jenkins, Influence of Physical Contact on Pacing Strategies during Game-Based Activities, International Journal of Sports Physiology and Performance, vol.9, issue.5, pp.811-816, 2014.

M. Lacome, J. Piscione, J. Hager, and M. Bourdin, A new approach to quantifying physical demand in rugby union, Journal of Sports Sciences, vol.32, issue.3, pp.290-300, 2014.
URL : https://hal.archives-ouvertes.fr/hal-00926860

M. Lacome, J. Piscione, J. Hager, and C. Carling, Fluctuations in running and skill-related performance in elite rugby union match-play, European Journal of Sport Science, vol.17, issue.2, pp.132-143, 2017.

M. Mohr, P. Krustrup, and J. Bangsbo, Fatigue in soccer: A brief review, Journal of Sports Sciences, vol.23, issue.6, pp.593-599, 2005.

M. Mooney, S. Cormack, B. O'brien, and A. J. Coutts, Do physical capacity and interchange rest periods influence match exercise-intensity profile in Australian football?, International Journal of Sports Physiology and Performance, vol.8, issue.2, pp.165-172, 2013.

B. T. Pollard, A. N. Turner, R. Eager, D. J. Cunningham, C. J. Cook et al., The Ball in Play Demands of International Rugby Union, Journal of Science and Medicine in Sport, issue.0, p.0, 2018.

C. Reardon, D. P. Tobin, P. Tierney, and E. Delahunt, The worst case scenario: Locomotor and collision demands of the longest periods of gameplay in professional rugby union, PLoS ONE, issue.5, p.12, 2017.

L. C. Reid, J. R. Cowman, B. S. Green, and G. F. Coughlan, Return to play in elite rugby union: application of global positioning system technology in return-to-running programs, Journal of Sport Rehabilitation, vol.22, issue.2, pp.122-129, 2013.

S. P. Roberts, G. Trewartha, R. J. Higgitt, J. El-abd, and K. A. Stokes, The physical demands of elite English rugby union, Journal of Sports Sciences, vol.26, issue.8, pp.825-833, 2008.

M. T. Scott, T. J. Scott, and V. G. Kelly, The Validity and Reliability of Global Positioning Systems in Team Sport: A Brief Review, Journal of Strength and Conditioning Research, vol.30, issue.5, pp.1470-1490, 2016.

L. Suarez-arrones, J. Portillo, F. Pareja-blanco, E. Sáez-de-villareal, L. Sánchez-medina et al., Match-play activity profile in elite women's rugby union players, Journal of Strength and Conditioning Research, vol.28, issue.2, pp.452-458, 2014.

R. Swaby, P. A. Jones, and P. Comfort, Relationship between Maximum Aerobic Speed Performance and Distance Covered in Rugby Union Games, Journal of Strength and Conditioning Research, 2016.

D. Sykes, C. Twist, C. Nicholas, and K. Lamb, Changes in locomotive rates during senior elite rugby league matches, Journal of Sports Sciences, vol.29, issue.12, pp.1263-1271, 2011.

. Forsythe, Enfin, la seule étude qui se consacre précisément à l'analyse des déformations régionales chez le joueur de rugby à XV ne met aucune différence en évidence sur le GLSrd et la détorsion, De plus, les indicateurs de pressions de remplissage (E/E') sont similaires, 2016.

W. B. Abernethy, J. K. Choo, and A. M. Hutter, Echocardiographic characteristics of professional football players, Journal of the American College of Cardiology, vol.41, issue.2, pp.2633-2638, 2003.

B. H. Amundsen, T. Helle-valle, T. Edvardsen, H. Torp, J. Crosby et al., Noninvasive Myocardial Strain Measurement by Speckle Tracking Echocardiography, Journal of the American College of Cardiology, vol.47, issue.4, pp.789-793, 2006.

L. Baggish-aaron, B. Weiner-rory, H. Kanayama-gen, I. James, L. Michael et al., Cardiovascular Toxicity of Illicit AnabolicAndrogenic Steroid Use, vol.135, pp.1991-2002, 2017.

F. Buuren, . Van, K. P. Mellwig, T. Butz, C. Langer et al.,

, Left Ventricular Mass and Oxygen Uptake in Top Handball Athletes, International Journal of Sports Medicine, vol.34, issue.03, pp.200-206

L. Chevalier, C. Baudot, S. Garrigue, M. Touzelier, F. Merle et al., Les caractéristiques électrocardiographiques et échocardiographiques du rugbyman, vol.19, pp.69-74, 2004.

L. B. Croft, A. Belanger, M. A. Miller, A. Roberts, and M. E. Goldman, Comparison of National Football League Linemen Versus Nonlinemen of Left Ventricular Mass and Left Atrial Size, The American Journal of Cardiology, vol.102, issue.3, pp.343-347, 2008.

S. F. Crouse, S. White, J. P. Erwin, T. H. Meade, S. E. Martin et al., Echocardiographic and Blood Pressure Characteristics of First-Year Collegiate American-Style Football Players, The American Journal of Cardiology, vol.117, issue.1, pp.131-134, 2016.

A. De-luca, L. Stefani, G. Pedrizzetti, S. Pedri, and G. Galanti, The effect of exercise training on left ventricular function in young elite athletes, Cardiovascular Ultrasound, vol.9, 2011.

G. Doucende, I. Schuster, T. Rupp, A. Startun, M. Dauzat et al., , 2010.

, Kinetics of left ventricular strains and torsion during incremental exercise in healthy subjects: the key role of torsional mechanics for systolic-diastolic coupling, Circulation. Cardiovascular Imaging, vol.3, issue.5, pp.586-594

G. Duthie, D. Pyne, and S. Hooper, Applied physiology and game analysis of rugby union, Sports Medicine, issue.13, pp.973-991, 2003.

D. J. Engel, A. Schwartz, and S. Homma, Athletic Cardiac Remodeling in US Professional Basketball Players, JAMA Cardiology, vol.1, issue.1, pp.80-87, 2016.

R. Fagard, , 2003.

, Athlete's heart, Heart, vol.89, issue.12, pp.1455-1461

L. Forsythe, D. H. Maciver, C. Johnson, K. George, J. Somauroo et al., The relationship between left ventricular structure and function in the elite rugby football league athlete as determined by conventional echocardiography and myocardial strain imaging, International Journal of Cardiology, vol.261, pp.211-217, 2018.

G. Galanti, L. Stefani, G. Mascherini, V. Di-tante, and L. Toncelli, Left ventricular remodeling and the athlete's heart, irrespective of quality load training, Cardiovascular Ultrasound, vol.14, 2016.

G. Grazioli, D. Usín, E. Trucco, M. Sanz, S. Montserrat et al., , 2016.

, Differentiating hypertrophic cardiomyopathy from athlete's heart: An electrocardiographic and echocardiographic approach, Journal of Electrocardiology, vol.49, issue.4, pp.539-544

T. Helle-valle, J. Crosby, T. Edvardsen, E. Lyseggen, B. H. Amundsen et al., New Noninvasive Method for Assessment of Left Ventricular Rotation: Speckle Tracking Echocardiography, Circulation, vol.112, issue.20, pp.3149-3156, 2005.

R. M. Lang, L. P. Badano, V. Mor-avi, J. Afilalo, A. Armstrong et al., Recommendations for cardiac chamber quantification by echocardiography in adults: an update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging, European Heart Journal Cardiovascular Imaging, vol.16, issue.3, pp.233-270, 2015.

R. M. Lang, M. Bierig, R. B. Devereux, F. A. Flachskampf, E. Foster et al., Recommendations for Chamber Quantification: A Report from the American Society of Echocardiography's Guidelines and Standards Committee and the Chamber Quantification Writing Group, Developed in Conjunction with the European Association of Echocardiography, a Branch of the European Society of, Cardiology. Journal of the American Society of Echocardiography, vol.18, issue.12, pp.1440-1463, 2005.

J. Lin, F. Wang, R. B. Weiner, J. R. Deluca, M. M. Wasfy et al., Blood Pressure and Left Ventricular Remodeling Among American Style Football Players, JACC. Cardiovascular Imaging, vol.9, issue.12, pp.1367-1376, 2016.

S. Mandigout, C. Maufrais, T. Cornette, A. Alaphilippe, and J. C. Daviet, Speckle tracking echocardiographic analysis of left ventricular systolic and diastolic function in young elite rugby players, The Journal of Sports Medicine and Physical Fitness, vol.56, issue.11, pp.1401-1409, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01216387

C. Maufrais, I. Schuster, G. Doucende, D. Vitiello, T. Rupp et al., Endurance training minimizes age-related changes of left ventricular twist-untwist mechanics, Journal of the American Society of Echocardiography: Official Publication of the American Society of Echocardiography, vol.27, issue.11, pp.1208-1215, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01141533

M. Montisci, R. El-mazloum, G. Cecchetto, C. Terranova, S. D. Ferrara et al., Anabolic androgenic steroids abuse and cardiac death in athletes: Morphological and toxicological findings in four fatal cases, Forensic Science International, vol.217, issue.1-3, pp.13-18, 2012.

J. Morganroth, B. J. Maron, W. L. Henry, and S. E. Epstein, Comparative left ventricular dimensions in trained athletes, Annals of Internal Medicine, vol.82, issue.4, pp.521-524, 1975.

S. F. Nagueh, K. J. Middleton, H. A. Kopelen, W. A. Zoghbi, and M. A. Quiñones, , 1997.

, Doppler Tissue Imaging: A Noninvasive Technique for Evaluation of Left Ventricular Relaxation and Estimation of Filling Pressures, Journal of the American College of Cardiology, vol.30, issue.6, pp.344-350

Y. Notomi, T. Shiota, Z. B. Popovi?, J. A. Weaver, S. J. Oryszak et al., Measurement of Ventricular Torsion by Two-Dimensional Ultrasound Speckle Tracking Imaging, Journal of the American College of Cardiology, vol.45, issue.12, pp.2034-2041, 2005.

S. Nottin, G. Doucende, I. Schuster-beck, M. Dauzat, and P. Obert, Alteration in left ventricular normal and shear strains evaluated by 2D-strain echocardiography in the athlete's heart, The Journal of Physiology, vol.586, issue.19, pp.4721-4733, 2008.

A. Pelliccia, M. S. Maron, and B. J. Maron, Assessment of left ventricular hypertrophy in a trained athlete: differential diagnosis of physiologic athlete's heart from pathologic hypertrophy, Progress in Cardiovascular Diseases, vol.54, issue.5, pp.387-396, 2012.

P. Pirompol, V. Teekabut, W. Weerachatyanukul, T. Bupha-intr, and J. Wattanapermpool, Supra-physiological dose of testosterone induces pathological cardiac hypertrophy, Journal of Endocrinology, vol.229, issue.1, pp.13-23, 2016.

B. M. Pluim, A. H. Zwinderman, A. Laarse, . Van-der, E. E. Wall et al., The Athlete's Heart: A Meta-Analysis of Cardiac Structure and Function, Circulation, vol.101, issue.3, pp.336-344, 2000.

L. E. Teichholz, T. Kreulen, M. V. Herman, and R. Gorlin, Problems in echocardiographic volume determinations: Echocardiographic-angiographic correlations in the presence or absence of asynergy, The American Journal of Cardiology, vol.37, issue.1, pp.7-11, 1976.

A. Urhausen, Are the cardiac effects of anabolic steroid abuse in strength athletes reversible?, Heart, vol.90, issue.5, pp.496-501, 2004.

J. Wang, D. S. Khoury, V. Thohan, G. Torre-amione, and S. F. Nagueh, Global Diastolic Strain Rate for the Assessment of Left Ventricular Relaxation and Filling Pressures, Circulation, vol.115, issue.11, pp.1376-1383, 2007.

R. B. Weiner, F. Wang, S. K. Isaacs, R. Malhotra, B. Berkstresser et al., Blood Pressure and Left Ventricular Hypertrophy During American-Style Football ParticipationClinical Perspective, Circulation, vol.128, issue.5, pp.524-531, 2013.

W. B. Abernethy, J. K. Choo, and A. M. Hutter, Echocardiographic characteristics of professional football players, J. Am. Coll. Cardiol, vol.41, pp.280-284, 2003.

R. Akenhead, D. French, K. G. Thompson, and P. R. Hayes, The acceleration dependent validity and reliability of 10 Hz GPS, J. Sci. Med. Sport, vol.17, pp.562-566, 2014.

B. H. Amundsen, T. Helle-valle, T. Edvardsen, H. Torp, J. Crosby et al., Noninvasive Myocardial Strain Measurement by Speckle Tracking Echocardiography, J. Am. Coll. Cardiol, vol.47, pp.789-793, 2006.

G. Anrep and . Von, On the part played by the suprarenals in the normal vascular reactions of the body, J. Physiol, vol.45, pp.307-317, 1912.

I. Åstrand, P. Åstrand, E. H. Christensen, and R. Hedman, Intermittent Muscular Work, Acta Physiol. Scand, vol.48, pp.448-453, 1960.

I. Åstrand, P. Åstrand, E. H. Christensen, and R. Hedman, Myohemoglobin as an Oxygen-Store in Man, Acta Physiol. Scand, vol.48, pp.454-460, 1960.

R. J. Aughey, Australian Football Player Work Rate: Evidence of Fatigue and Pacing?, Int. J. Sports Physiol. Perform, vol.5, pp.394-405, 2010.

R. J. Aughey and C. Falloon, Real-time versus post-game GPS data in team sports, J. Sci. Med. Sport, vol.13, pp.348-349, 2010.

D. J. Austin and S. J. Kelly, Positional differences in professional rugby league match play through the use of global positioning systems, J. Strength Cond. Res, vol.27, pp.14-19, 2013.

D. Austin, T. Gabbett, and D. Jenkins, The physical demands of Super 14 rugby union, J. Sci. Med. Sport, vol.14, pp.259-263, 2011.

D. J. Austin, T. J. Gabbett, and D. J. Jenkins, Repeated high-intensity exercise in a professional rugby league, J. Strength Cond. Res, vol.25, pp.1898-1904, 2011.

D. J. Austin, T. J. Gabbett, and D. G. Jenkins, Reliability and Sensitivity of a Repeated High-Intensity Exercise Performance Test for Rugby League and Rugby Union, J. Strength Cond. Res, vol.27, pp.1128-1135, 2013.

A. L. Baggish, R. B. Weiner, G. Kanayama, J. I. Hudson, M. H. Picard et al., Long-Term Anabolic-Androgenic Steroid Use Is Associated With Left Ventricular Dysfunction, Circ. Heart Fail, vol.3, pp.472-476, 2010.

L. Baggish-aaron, B. Weiner-rory, H. Kanayama-gen, I. James, L. Michael et al., Cardiovascular Toxicity of Illicit AnabolicAndrogenic Steroid Use, vol.135, 1991.

. Balsom, Physiological responses to maximal intensity intermittent exercise. -PubMed -NCBI, Eur. J. Appl. Physiol, 1992.

P. Balsom, J. Seger, B. Sjödin, and B. Ekblom, Maximal-Intensity Intermittent Exercise: Effect of Recovery Duration, Int. J. Sports Med, vol.13, pp.528-533, 1992.

P. D. Balsom, G. C. Gaitanos, B. Ekblom, and B. Sjödin, Reduced oxygen availability during high intensity intermittent exercise impairs performance, Acta Physiol. Scand, vol.152, pp.279-285, 1994.

J. Bangsbo, The physiology of soccer--with special reference to intense intermittent exercise. -Abstract -Europe PMC, Acta Physiol. Scand, 1994.

R. Bath, L'histoire du rugby, 2015.

A. Beaumont, F. Grace, J. Richards, J. Hough, D. Oxborough et al., , 2017.

, Left Ventricular Speckle Tracking-Derived Cardiac Strain and Cardiac Twist Mechanics in Athletes: A Systematic Review and Meta-Analysis of Controlled Studies, Sports Med. Auckl. Nz, vol.47, pp.1145-1170

B. Stephen, P. Nyland-lori, T. Marc, D. , M. Mark et al., Alterations in the Determinants of Diastolic Suction During Pacing Tachycardia, Circ. Res, vol.87, pp.235-240, 2000.

B. Berglund, High-Altitude Training, Sports Med, vol.14, pp.289-303, 1992.

B. C. Bernardo, K. L. Weeks, L. Pretorius, and J. R. Mcmullen, Molecular distinction between physiological and pathological cardiac hypertrophy: Experimental findings and therapeutic strategies, Pharmacol. Ther, vol.128, pp.191-227, 2010.

L. V. Billat, Interval Training for Performance: A Scientific and Empirical Practice, Sports Med, vol.16, 2001.

F. Billaut and R. J. Aughey, Update in the understanding of altitude-induced limitations to performance in team-sport athletes, Br. J. Sports Med, vol.47, pp.22-25, 2013.

F. Billaut and K. Smith, Prolonged Repeated-Sprint Ability Is Related to Arterial O 2 Desaturation in Men, Int. J. Sports Physiol. Perform, vol.5, pp.197-209, 2010.

D. Bishop and J. Edge, Determinants of repeated-sprint ability in females matched for single-sprint performance, Eur. J. Appl. Physiol, vol.97, pp.373-379, 2006.

D. Bishop, S. Lawrence, and M. Spencer, Predictors of repeated-sprint ability in elite female hockey players, J. Sci. Med. Sport, vol.6, pp.199-209, 2003.

D. Bishop, J. Edge, and C. Goodman, Muscle buffer capacity and aerobic fitness are associated with repeated-sprint ability in women, Eur. J. Appl. Physiol, vol.92, pp.540-547, 2004.

D. Bishop, J. Edge, C. Thomas, and J. Mercier, Effects of high-intensity training on muscle lactate transporters and postexercise recovery of muscle lactate and hydrogen ions in women, Am. J. Physiol.-Regul. Integr. Comp. Physiol, vol.295, pp.1991-1998, 2008.
URL : https://hal.archives-ouvertes.fr/hal-01586192

D. Bishop, O. Girard, and A. Mendez-villanueva, Repeated-Sprint Ability -Part II, Sports Med, vol.41, pp.741-756, 2011.

G. C. Bogdanis, M. E. Nevill, L. H. Boobis, H. K. Lakomy, and A. M. Nevill, Recovery of power output and muscle metabolites following 30 s of maximal sprint cycling in man, J. Physiol, vol.482, pp.467-480, 1995.

G. C. Bogdanis, M. E. Nevill, L. H. Boobis, and H. K. Lakomy, Contribution of phosphocreatine and aerobic metabolism to energy supply during repeated sprint exercise, J. Appl. Physiol, vol.80, pp.876-884, 1996.

D. Böning, Altitude and Hypoxia Training -A Short Review, Int. J. Sports Med, vol.18, pp.565-570, 1997.

G. Borg, G. Ljunggren, and R. Ceci, The increase of perceived exertion, aches and pain in the legs, heart rate and blood lactate during exercise on a bicycle ergometer, Eur. J. Appl. Physiol, vol.54, pp.343-349, 1985.

P. C. Bourdon, M. Cardinale, A. Murray, P. Gastin, M. Kellmann et al., Monitoring Athlete Training Loads: Consensus Statement, Int. J. Sports Physiol. Perform, vol.12, pp.2-161, 2017.

. Boyd, . Gallaher, . Ball, A. Stepto, and . Varley, Practical application of accelerometer in australian football, J. Sci. Med. Sport, 2010.

L. J. Boyd, K. Ball, and R. J. Aughey, The reliability of MinimaxX accelerometers for measuring physical activity in Australian football, Int. J. Sports Physiol. Perform, vol.6, pp.311-321, 2011.

P. S. Bradley and T. D. Noakes, Match running performance fluctuations in elite soccer: indicative of fatigue, pacing or situational influences?, J. Sports Sci, vol.31, pp.1627-1638, 2013.

D. Bravo, F. Impellizzeri, E. Rampinini, C. Castagna, D. Bishop et al., Sprint vs. Interval Training in Football, Int. J. Sports Med, vol.29, pp.668-674, 2008.

J. Brazier, M. Antrobus, G. K. Stebbings, S. H. Day, P. Callus et al., Anthropometric and physiological characteristics of elite male rugby athletes, J. Strength Cond. Res, vol.12, 2018.

C. Brechbuhl, Suivi physiologique et entraînement en hypoxie chez des joueurs de tennis élite, 2018.

. Brocherie, Innover en préparation physique avec l'entraînement en altitude, Réflex. Sport INSEP, vol.22, 2017.

F. Brocherie, O. Girard, R. Faiss, and G. P. Millet, High-intensity intermittent training in hypoxia: a double-blinded, placebo-controlled field study in youth football players, J. Strength Cond. Res, vol.29, pp.226-237, 2015.

F. Brocherie, G. P. Millet, J. Morin, and O. Girard, Mechanical Alterations to Repeated Treadmill Sprints in Normobaric Hypoxia, Med. Sci. Sports Exerc, vol.48, pp.1570-1579, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01628542

F. Brocherie, O. Girard, R. Faiss, and G. P. Millet, Effects of Repeated-Sprint Training in Hypoxia on Sea-Level Performance: A Meta-Analysis, Sports Med. Auckl. NZ, 2017.

M. Buchheit, The 30-15 Intermittent Fitness Test: Accuracy for Individualizing Interval Training of Young Intermittent Sport Players, J. Strength Cond. Res, vol.22, pp.365-374, 2008.

M. Buchheit and P. B. Laursen, High-Intensity Interval Training, Solutions to the Programming Puzzle: Part I: Cardiopulmonary Emphasis, Sports Med, vol.43, pp.313-338, 2013.

M. Buchheit and P. B. Laursen, High-Intensity Interval Training, Solutions to the Programming Puzzle: Part II: Anaerobic Energy, Neuromuscular Load and Practical Applications, Sports Med, vol.43, pp.927-954, 2013.

M. Buchheit and P. Ufland, Effect of endurance training on performance and muscle reoxygenation rate during repeated-sprint running, Eur. J. Appl. Physiol, vol.111, pp.293-301, 2011.

M. Buchheit, P. Laursen, J. Kuhnle, D. Ruch, C. Renaud et al., Gamebased Training in Young Elite Handball Players, Int. J. Sports Med, vol.30, pp.251-258, 2009.

M. Buchheit, A. Mendez-villanueva, M. Quod, T. Quesnel, A. et al., , 2010.

, Improving Acceleration and Repeated Sprint Ability in Well-Trained Adolescent Handball Players: Speed versus Sprint Interval Training, Int. J. Sports Physiol. Perform, vol.5, pp.152-164

M. Buchheit, H. Haddad, B. M. Simpson, D. Palazzi, P. C. Bourdon et al., Monitoring accelerations with GPS in football: time to slow down?, Int. J. Sports Physiol. Perform, vol.9, pp.442-445, 2014.

G. D. Buckberg, M. Castellá, M. Gharib, and S. Saleh, Active myocyte shortening during the 'isovolumetric relaxation' phase of diastole is responsible for ventricular suction; 'systolic ventricular filling, Eur. J. Cardiothorac. Surg, vol.29, pp.98-106, 2006.

F. Buuren, . Van, K. P. Mellwig, T. Butz, C. Langer et al., Left Ventricular Mass and Oxygen Uptake in Top Handball Athletes, Int. J. Sports Med, vol.34, pp.200-206, 2013.

N. Cahill, K. Lamb, P. Worsfold, R. Headey, M. et al., The movement characteristics of English Premiership rugby union players, J. Sports Sci, vol.31, pp.229-237, 2013.

C. J. Carling, M. Lacome, E. Flanagan, P. O'doherty, and J. Piscione, Exposure time, running and skill-related performance in international u20 rugby union players during an intensified tournament, PLoS ONE, vol.12, 2017.

S. Caselli, F. M. Di-paolo, C. Pisicchio, R. Di-pietro, F. M. Quattrini et al., Three-dimensional echocardiographic characterization of left ventricular remodeling in Olympic athletes, Am. J. Cardiol, vol.108, pp.141-147, 2011.

D. P. Casey and M. J. Joyner, Compensatory vasodilatation during hypoxic exercise: mechanisms responsible for matching oxygen supply to demand, J. Physiol, vol.590, pp.6321-6326, 2012.

P. Caso, A. D'andrea, M. Galderisi, B. Liccardo, S. Severino et al., Pulsed Doppler tissue imaging in endurance athletes: relation between left ventricular preload and myocardial regional diastolic function, Am. J. Cardiol, vol.85, pp.1131-1136, 2000.

R. Chambers, T. J. Gabbett, M. H. Cole, and A. Beard, The Use of Wearable Microsensors to Quantify Sport-Specific Movements, Sports Med, vol.45, pp.1065-1081, 2015.

S. Charfeddine, S. Mallek, F. Triki, R. Hammami, D. Abid et al., Echocardiographic analysis of the left ventricular function in young athletes: a focus on speckle tracking imaging, Pan Afr. Med. J, vol.25, p.171, 2016.

L. Chevalier, C. Baudot, S. Garrigue, M. Touzelier, F. Merle et al., Les caractéristiques électrocardiographiques et échocardiographiques du rugbyman, vol.19, pp.69-74, 2004.

L. Chevalier, G. Kervio, L. Corneloup, M. Vincent, C. Baudot et al., Athlete's heart patterns in elite rugby players: Effects of training specificities, Arch. Cardiovasc. Dis, vol.106, pp.72-78, 2013.

S. Chiang, M. Daimon, K. Ishii, T. Kawata, S. Miyazaki et al., Assessment of Elevation of and Rapid Change in Left Ventricular Filling Pressure Using a Novel Global Strain Imaging Diastolic Index, Circ. J, vol.78, pp.419-427, 2014.

E. H. Christensen, R. Hedman, and B. Saltin, Intermittent and Continuous Running (A further contribution to the physiology of intermittent work, Acta Physiol. Scand, vol.18, 1960.

S. M. Cleland, J. M. Murias, J. M. Kowalchuk, and D. H. Paterson, Effects of prior heavy-intensity exercise on oxygen uptake and muscle deoxygenation kinetics of a subsequent heavy-intensity cycling and knee-extension exercise, Appl. Physiol. Nutr. Metab, vol.37, pp.138-148, 2012.

G. F. Coughlan, B. S. Green, P. T. Pook, E. Toolan, and S. P. Connor, Physical game demands in elite rugby union: a global positioning system analysis and possible implications for rehabilitation, J. Orthop. Sports Phys. Ther, vol.41, pp.600-605, 2011.

J. Counsilman, Hypoxic and other methods of training evaluated, Swim. Tech, 1975.

C. Cummins, R. Orr, H. O'connor, and C. West, Global positioning systems (GPS) and microtechnology sensors in team sports: a systematic review, Sports Med. Auckl. NZ, vol.43, pp.1025-1042, 2013.

B. Cunniffe, W. Proctor, J. S. Baker, and B. Davies, An evaluation of the physiological demands of elite rugby union using Global Positioning System tracking software, J. Strength Cond. Res, vol.23, pp.1195-1203, 2009.

D. Cunningham, D. A. Shearer, S. Drawer, R. Eager, N. Taylor et al., Movement Demands of Elite U20 International Rugby Union Players, PloS One, vol.11, 2016.

D. J. Cunningham, D. J. West, N. J. Owen, D. A. Shearer, C. V. Finn et al., Strength and power predictors of sprinting performance in professional rugby players, J. Sports Med. Phys. Fitness, vol.53, pp.105-111, 2013.

D. J. Cunningham, D. A. Shearer, S. Drawer, B. Pollard, R. Eager et al., Movement Demands of Elite Under-20s and Senior International Rugby Union Players, PloS One, vol.11, 2016.

D. J. Cunningham, D. A. Shearer, N. Carter, S. Drawer, B. Pollard et al., Assessing worst case scenarios in movement demands derived from global positioning systems during international rugby union matches: Rolling averages versus fixed length epochs, PLOS ONE, vol.14, 2018.

D. J. Cunningham, D. A. Shearer, S. Drawer, B. Pollard, C. J. Cook et al., Relationships between physical qualities and key performance indicators during match-play in senior international rugby union players, PLoS ONE, vol.13, 2018.

D. Curtelin, D. Morales-alamo, R. Torres-peralta, P. Rasmussen, M. Martin-rincon et al., , 2018.

, Cerebral blood flow, frontal lobe oxygenation and intra-arterial blood pressure during sprint exercise in normoxia and severe acute hypoxia in humans, J. Cereb. Blood Flow Metab. Off. J. Int. Soc. Cereb. Blood Flow Metab, vol.38, pp.136-150

B. M. Van-dalen, O. I. Soliman, W. B. Vletter, F. J. Cate, and M. L. Geleijnse, , 2008.

, Age-related changes in the biomechanics of left ventricular twist measured by speckle tracking echocardiography, Am. J. Physiol.-Heart Circ. Physiol, vol.295, pp.1705-1711

F. D'ascenzi, M. Cameli, V. Zacà, M. Lisi, A. Santoro et al., Supernormal diastolic function and role of left atrial myocardial deformation analysis by 2D speckle tracking echocardiography in elite soccer players, Echocardiogr. Mt. Kisco N, vol.28, pp.320-326, 2011.

B. Dawson, C. Goodman, S. Lawrence, D. Preen, T. Polglaze et al., Muscle phosphocreatine repletion following single and repeated short sprint efforts. Scand, J. Med. Sci. Sports, vol.7, pp.206-213, 1997.

A. De-luca, L. Stefani, G. Pedrizzetti, S. Pedri, and G. Galanti, The effect of exercise training on left ventricular function in young elite athletes, Cardiovasc. Ultrasound, vol.9, p.27, 2011.

J. A. Delaney, H. R. Thornton, J. F. Pryor, A. M. Stewart, B. J. Dascombe et al., Peak Running Intensity of International Rugby: Implications for Training Prescription, Int. J. Sports Physiol. Perform, pp.1-22, 2016.

C. Delecluse, Influence of strength training on sprint running performance. Current findings and implications for training, Sports Med. Auckl. NZ, vol.24, pp.147-156, 1997.

C. Delecluse, H. Van-coppenolle, E. Willems, M. Van-leemputte, R. Diels et al., Influence of high-resistance and high-velocity training on sprint performance, Med. Sci. Sports Exerc, vol.27, pp.1203-1209, 1995.

J. A. Dempsey and P. D. Wagner, Exercise-induced arterial hypoxemia, J. Appl. Physiol, vol.87, 1997.

M. U. Deutsch, G. A. Kearney, and N. J. Rehrer, Lactate equilibrium and aerobic indices of elite rugby union players, Med. Sci. Sports Exerc, 1998.

M. U. Deutsch, G. J. Maw, D. Jenkins, and P. Reaburn, Heart rate, blood lactate and kinematic data of elite colts (under-19) rugby union players during competition, J. Sports Sci, vol.16, pp.561-570, 1998.

M. U. Deutsch, G. A. Kearney, and N. J. Rehrer, Time -motion analysis of professional rugby union players during match-play, J. Sports Sci, vol.25, pp.461-472, 2007.

R. B. Devereux, D. R. Alonso, E. M. Lutas, G. J. Gottlieb, E. Campo et al., Echocardiographic assessment of left ventricular hypertrophy: Comparison to necropsy findings, Am. J. Cardiol, vol.57, pp.450-458, 1986.

D. Salvo, V. Baron, R. Tschan, H. Calderon-montero, F. Bachl et al., , 2007.

, Performance Characteristics According to Playing Position in Elite Soccer, Int. J. Sports Med, vol.28, pp.222-227

D. B. Dill, A. , and W. C. , Maximal oxygen uptake at sea level and at 3,090-m altitude in high school champion runners, J. Appl. Physiol, vol.30, pp.854-859, 1971.

D. Docherty, Time-motion analysis related to the physiological demands of rugby, J. Hum. Mov. Stud, 1988.

G. Doucende, I. Schuster, T. Rupp, A. Startun, M. Dauzat et al., , 2010.

J. P. Doutreloux, P. Tepe, M. Demont, P. Passelergue, A. et al., Exigences énergétiques estimées selon les postes de jeu en rugby, Sci. Sports, vol.17, pp.189-197, 2002.

D. Dubois and E. Dubois, FIFTH PAPER THE MEASUREMENT OF THE SURFACE AREA OF MAN, Arch. Intern. Med. XV, p.868, 1915.

R. Dubois, T. Paillard, D. Mcgrath, K. Chamari, O. Maurelli et al., Changes in training load, running performance, lower body power and biochemical characteristics of back players throughout a professional Rugby Union season, J. Hum. Sport Exerc, vol.12, 2017.
URL : https://hal.archives-ouvertes.fr/hal-02122337

G. Dupont, G. P. Millet, C. Guinhouya, and S. Berthoin, Relationship between oxygen uptake kinetics and performance in repeated running sprints, Eur. J. Appl. Physiol, vol.95, pp.27-34, 2005.

G. Duthie, D. Pyne, and S. Hooper, Applied physiology and game analysis of rugby union, Sports Med. Auckl. NZ, vol.33, pp.973-991, 2003.

G. Duthie, D. Pyne, and S. Hooper, Time motion analysis of 2001 and 2002 super 12 rugby, J. Sports Sci, vol.23, pp.523-530, 2005.

T. L. Dutka and G. D. Lamb, Effect of low cytoplasmic [ATP] on excitationcontraction coupling in fast-twitch muscle fibres of the rat, J. Physiol, vol.560, pp.451-468, 2004.

C. Eaton, G. , and K. , Position specific rehabilitation for rugby union players. Part I: Empirical movement analysis data, Phys. Ther. Sport, vol.7, pp.22-29, 2006.

J. Edge, D. Bishop, C. Goodman, D. , and B. , Effects of high-and moderateintensity training on metabolism and repeated sprints, Med. Sci. Sports Exerc, vol.37, pp.1975-1982, 2005.

J. Edge, D. Bishop, and C. Goodman, Effects of chronic NaHCO3 ingestion during interval training on changes to muscle buffer capacity, metabolism, and short-term endurance performance, J. Appl. Physiol, vol.101, pp.918-925, 2006.

J. Edge, S. Hill-haas, C. Goodman, and D. Bishop, Effects of resistance training on H+ regulation, buffer capacity, and repeated sprints, Med. Sci. Sports Exerc, vol.38, 2004.

M. Elstad, K. Toska, and L. Walløe, Model simulations of cardiovascular changes at the onset of moderate exercise in humans, J. Physiol, vol.543, pp.719-728, 2002.

D. J. Engel, A. Schwartz, and S. Homma, Athletic Cardiac Remodeling in US Professional Basketball Players, JAMA Cardiol, vol.1, pp.80-87, 2016.

R. M. Enoka and D. G. Stuart, The contribution of neuroscience to exercise studies, Fed. Proc, vol.44, pp.2279-2285, 1985.

R. Fagard, Athlete's heart, Heart, vol.89, pp.1455-1461, 2003.

R. H. Fagard, Athlete's Heart: A Meta-Analysis of the Echocardiographic Experience, Int. J. Sports Med, vol.17, pp.140-144, 1996.

R. H. Fagard, Impact of different sports and training on cardiac structure and function, Cardiol. Clin, vol.15, pp.397-412, 1997.

R. Faiss, O. Girard, and G. P. Millet, Advancing hypoxic training in team sports: from intermittent hypoxic training to repeated sprint training in hypoxia, Br. J. Sports Med, vol.47, pp.45-50, 2013.

R. Faiss, B. Léger, J. Vesin, P. Fournier, Y. Eggel et al., Significant Molecular and Systemic Adaptations after Repeated Sprint Training in Hypoxia, PLoS ONE, vol.8, 2013.

R. Faiss, S. Willis, D. Born, B. Sperlich, J. Vesin et al., , 2015.

, Repeated Double-poling Sprint Training in Hypoxia by Competitive Cross-country Skiers, Med. Sci. Sports Exerc, vol.47, pp.809-817

V. Ferferieva, A. Van-den-bergh, P. Claus, R. Jasaityte, P. Veulemans et al., The relative value of strain and strain rate for defining intrinsic myocardial function, Am. J. Physiol.-Heart Circ. Physiol, vol.302, pp.188-195, 2012.

C. Foster, J. A. Florhaug, J. Franklin, L. Gottschall, L. A. Hrovatin et al., A new approach to monitoring exercise training, J. Strength Cond. Res, vol.15, pp.109-115, 2001.

E. Fox and D. Mathews, , 1974.

O. Frank, On the dynamics of cardiac muscle, Am. Heart J, vol.58, pp.467-478, 1959.

S. F. Fraser, J. L. Li, M. F. Carey, X. N. Wang, T. Sangkabutra et al., Fatigue depresses maximal in vitro skeletal muscle Na + -K + -ATPase activity in untrained and trained individuals, J. Appl. Physiol, vol.93, pp.1650-1659, 2002.

F. Norio, I. Sasaki-daisuke, K. Shin'ichi, and . Satoshi, Length Dependence of Tension Generation in Rat Skinned Cardiac Muscle, Circulation, vol.104, pp.1639-1645, 2001.

T. J. Gabbett, Quantifying the physical demands of collision sports: does microsensor technology measure what it claims to measure?, J. Strength Cond. Res, vol.27, pp.2319-2322, 2013.

T. J. Gabbett, Influence of the opposing team on the physical demands of elite rugby league match play, J. Strength Cond. Res, vol.27, pp.1629-1635, 2013.

T. J. Gabbett, Use of Relative Speed Zones Increases the High-Speed Running Performed in Team Sport Match Play, J. Strength Cond. Res, vol.29, pp.3353-3359, 2015.

T. J. Gabbett, The training-injury prevention paradox: should athletes be training smarter and harder?, Br. J. Sports Med, vol.50, pp.273-280, 2016.

T. J. Gabbett, Influence of Fatigue on Tackling Ability in Rugby League Players: Role of Muscular Strength, Endurance, and Aerobic Qualities, PLoS ONE, vol.11, 2016.

T. Gabbett, J. Kelly, and T. Pezet, Realtionship between physical fitness and playing ability in rugby league players, J. Strength Cond. Res, vol.8, 2007.

T. Gabbett, D. Jenkins, and B. Abernethy, Physical collisions and injury during professional rugby league skills training, J. Sci. Med. Sport, vol.13, pp.578-583, 2010.

T. J. Gabbett, D. G. Jenkins, and B. Abernethy, Relative importance of physiological, anthropometric, and skill qualities to team selection in professional rugby league, J. Sports Sci, vol.29, pp.1453-1461, 2011.

T. J. Gabbett, D. G. Jenkins, and B. Abernethy, Physical demands of professional rugby league training and competition using microtechnology, J. Sci. Med. Sport, vol.15, pp.80-86, 2012.

T. J. Gabbett, J. G. Stein, J. G. Kemp, and C. Lorenzen, Relationship between tests of physical qualities and physical match performance in elite rugby league players, J. Strength Cond. Res, vol.27, pp.1539-1545, 2013.

G. C. Gaitanos, C. Williams, L. H. Boobis, and S. Brooks, Human muscle metabolism during intermittent maximal exercise, J. Appl. Physiol, vol.75, pp.712-719, 1993.

G. Galanti, L. Stefani, G. Mascherini, V. Di-tante, and L. Toncelli, Left ventricular remodeling and the athlete's heart, irrespective of quality load training, Cardiovasc. Ultrasound, vol.14, 2016.

M. Galderisi, V. S. Lomoriello, A. Santoro, R. Esposito, M. Olibet et al., Differences of myocardial systolic deformation and correlates of diastolic function in competitive rowers and young hypertensives: a speckle-tracking echocardiography study, J. Am. Soc. Echocardiogr. Off. Publ. Am. Soc. Echocardiogr, vol.23, pp.1190-1198, 2010.

H. M. Galvin, K. Cooke, D. P. Sumners, K. N. Mileva, and J. L. Bowtell, Repeated sprint training in normobaric hypoxia, Br. J. Sports Med, vol.47, pp.74-79, 2013.

H. Gatterer, M. Philippe, V. Menz, F. Mosbach, M. Faulhaber et al., , 2014.

, Shuttle-Run Sprint Training in Hypoxia for Youth Elite Soccer Players: A Pilot Study, J. Sports Sci. Med, vol.13, pp.731-735

J. Geiser, M. Vogt, R. Billeter, C. Zuleger, F. Belforti et al., Training High -Living Low: Changes of Aerobic Performance and Muscle Structure with Training at Simulated Altitude, Int. J. Sports Med, vol.22, pp.579-585, 2001.

N. Gibbs, Injuries in professional rugby league: A three-year prospective study of the South Sydney Professional Rugby League Football Club, Am. J. Sports Med, vol.21, pp.696-700, 1993.

O. Girard, A. Mendez-villanueva, and D. Bishop, Repeated-Sprint Ability -Part I, Sports Med, vol.41, pp.673-694, 2011.

O. Girard, F. Brocherie, J. Morin, and G. P. Millet, Neuro-mechanical determinants of repeated treadmill sprints -Usefulness of an "hypoxic to normoxic recovery, approach. Front. Physiol, vol.6, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01858849

O. Girard, F. Brocherie, and G. P. Millet, Effects of Altitude/Hypoxia on Single-and Multiple-Sprint Performance: A Comprehensive Review, Sports Med. Auckl. NZ, 2017.

P. S. Goods, B. Dawson, G. J. Landers, C. J. Gore, and P. Peeling, No Additional Benefit of Repeat-Sprint Training in Hypoxia than in Normoxia on Sea-Level Repeat-Sprint Ability, J. Sports Sci. Med, vol.14, pp.681-688, 2015.

J. Gorcsan, D. P. Strum, W. A. Mandarino, V. K. Gulati, and M. R. Pinsky, Quantitative assessment of alterations in regional left ventricular contractility with color-coded tissue Doppler echocardiography. Comparison with sonomicrometry and pressure-volume relations, Circulation, vol.95, pp.2423-2433, 1997.

G. Grazioli, D. Usín, E. Trucco, M. Sanz, S. Montserrat et al., Differentiating hypertrophic cardiomyopathy from athlete's heart: An electrocardiographic and echocardiographic approach, J. Electrocardiol, vol.49, pp.539-544, 2016.

L. J. Haseler, M. C. Hogan, and R. S. Richardson, Skeletal muscle phosphocreatine recovery in exercise-trained humans is dependent on O 2 availability, J. Appl. Physiol, vol.86, pp.2013-2018, 1999.

C. A. Hautier, M. T. Linossier, A. Belli, J. R. Lacour, and L. M. Arsac, Optimal velocity for maximal power production in non-isokinetic cycling is related to muscle fibre type composition, Eur. J. Appl. Physiol, vol.74, pp.114-118, 1996.

J. Helgerud, L. C. Engen, U. Wisløff, and J. Hoff, Aerobic endurance training improves soccer performance, Med. Sci. Sports Exerc, vol.7, 2001.

M. Helmes, C. C. Lim, R. Liao, A. Bharti, L. Cui et al., Titin determines the Frank-Starling relation in early diastole, J. Gen. Physiol, vol.121, pp.97-110, 2003.

D. G. Higham, D. B. Pyne, J. M. Anson, and A. Eddy, Movement patterns in rugby sevens: Effects of tournament level, fatigue and substitute players, J. Sci. Med. Sport, vol.15, pp.277-282, 2012.

S. Hill-haas, D. Bishop, B. Dawson, C. Goodman, and J. Edge, Effects of rest interval during high-repetition resistance training on strength, aerobic fitness, and repeatedsprint ability, J. Sports Sci, vol.25, pp.619-628, 2007.

S. V. Hill-haas, B. T. Dawson, A. J. Coutts, and G. J. Rowsell, Physiological responses and time-motion characteristics of various small-sided soccer games in youth players, J. Sports Sci, vol.27, pp.1-8, 2009.

J. Hirvonen, S. Rehunen, H. Rusko, and M. Harkonen, Breakdown of high-energy phosphate compounds and lactate accumulation during short supramaximal exercise, Eur. J. Appl. Physiol, vol.56, pp.253-259, 1987.

B. R. Holme, Wearable microsensor tchnology to measure physical activity demands in handball, 2015.

J. Hoogsteen, A. Hoogeveen, H. Schaffers, P. F. Wijn, N. M. Hemel et al., Myocardial adaptation in different endurance sports: an echocardiographic study, Int. J. Cardiovasc. Imaging, vol.20, pp.19-26, 2004.

W. G. Hopkins, Measures of reliability in sports medicine and science. -PubMed -NCBI, Sports Med, 2000.

H. Hoppeler and M. Vogt, Hypoxia training for sea-level performance. Training highliving low, Adv. Exp. Med. Biol, vol.502, pp.61-73, 2001.

H. Hoppeler, E. Kleinert, C. Schlegel, H. Claassen, H. Howald et al., II. Morphological Adaptations of Human Skeletal Muscle to Chronic Hypoxia*, Int. J. Sports Med, vol.11, pp.3-9, 1990.

M. Hughes, M. D. Hughes, J. Williams, N. James, G. Vuckovic et al., Performance indicators in rugby union, J. Hum. Sport Exerc, vol.7, pp.383-401, 2012.

L. Hui, J. Pemberton, E. Hickey, X. K. Li, P. Lysyansky et al., The Contribution of Left Ventricular Muscle Bands to Left Ventricular Rotation: Assessment by a 2-Dimensional Speckle Tracking Method, J. Am. Soc. Echocardiogr, vol.20, pp.486-491, 2007.

B. T. Hulin, T. J. Gabbett, R. D. Johnston, and D. G. Jenkins, Wearable microtechnology can accurately identify collision events during professional rugby league match-play, J. Sci. Med. Sport, vol.20, pp.638-642, 2017.

B. M. Jackson, T. Polglaze, B. Dawson, T. King, and P. Peeling, Comparing Global Positioning System (GPS) and Global Navigation Satellite System (GNSS) Measures of Team Sport Movements, Int. J. Sports Physiol. Perform, pp.1-22, 2018.

R. D. Johnston and T. J. Gabbett, Repeated-sprint and effort ability in rugby league players, J. Strength Cond. Res, vol.25, pp.2789-2795, 2011.

R. D. Johnston, T. J. Gabbett, A. J. Seibold, and D. G. Jenkins, Influence of Physical Contact on Pacing Strategies during Game-Based Activities, Int. J. Sports Physiol. Perform, vol.9, pp.811-816, 2014.

R. D. Johnston, T. J. Gabbett, D. G. Jenkins, and B. T. Hulin, Influence of physical qualities on post-match fatigue in rugby league players, J. Sci. Med. Sport, vol.18, pp.209-213, 2015.

N. M. Jones, S. D. Mellalieu, J. , and N. , Team performance indicators as a function of winning and losing in rugby union, Int. J. Perform. Anal. Sport, vol.4, pp.61-71, 2004.

N. M. Jones, N. James, and S. D. Mellalieu, An objective method for depicting team performance in elite professional rugby union, J. Sports Sci, vol.26, pp.691-700, 2008.

C. Juel, H. Pilegaard, J. J. Nielsen, and J. Bangsbo, Interstitial K+ in human skeletal muscle during and after dynamic graded exercise determined by microdialysis, Am. J. Physiol.-Regul. Integr. Comp. Physiol, vol.278, pp.400-406, 2000.

I. L. Kanstrup and B. Ekblom, Blood volume and hemoglobin concentration as determinants of maximal aerobic power, Med. Sci. Sports Exerc, vol.16, pp.256-262, 1984.

C. Karatzaferi, A. De-haan, W. Van-mechelen, and A. J. Sargeant, Metabolic Changes in Single Human Muscle Fibres During Brief Maximal Exercise, Exp. Physiol, vol.86, pp.411-415, 2001.

N. Kasai, S. Mizuno, S. Ishimoto, E. Sakamoto, M. Maruta et al., Effect of training in hypoxia on repeated sprint performance in female athletes, 2015.

T. Kempton, A. C. Sirotic, M. Cameron, and A. J. Coutts, Match-related fatigue reduces physical and technical performance during elite rugby league match-play: a case study, J. Sports Sci, vol.31, pp.1770-1780, 2013.

T. King, D. Jenkins, and T. Gabbett, A time-motion analysis of professional rugby league match-play, J. Sports Sci, vol.27, pp.213-219, 2009.

P. Krustrup, M. Mohr, T. Amstrup, T. Rysgaard, J. Johansen et al., The Yo-Yo Intermittent Recovery Test: Physiological Response, Reliability, and Validity, Med. Sci. Sports Exerc, vol.35, pp.697-705, 2003.

L. Quarrie, K. Wilson, and B. D. , Force production in the rugby union scrum, J. Sports Sci, vol.18, pp.237-246, 2000.

M. Lacome, J. Piscione, J. Hager, and M. Bourdin, A new approach to quantifying physical demand in rugby union, J. Sports Sci, vol.32, pp.290-300, 2014.
URL : https://hal.archives-ouvertes.fr/hal-00926860

R. M. Lang, M. Bierig, R. B. Devereux, F. A. Flachskampf, E. Foster et al., Recommendations for Chamber Quantification: A Report from the American Society of Echocardiography's Guidelines and Standards Committee and the Chamber Quantification Writing Group, Developed in Conjunction with the European Association of Echocardiography, a Branch of the European Society of Cardiology, J. Am. Soc. Echocardiogr, vol.18, pp.1440-1463, 2005.

R. M. Lang, L. P. Badano, V. Mor-avi, J. Afilalo, A. Armstrong et al., Recommendations for cardiac chamber quantification by echocardiography in adults: an update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging, Eur. Heart J. Cardiovasc. Imaging, vol.16, pp.233-270, 2015.

P. Larsson, Global positioning system and sport-specific testing, Sports Med. Auckl. NZ, vol.33, pp.1093-1101, 2003.

P. B. Laursen and D. G. Jenkins, The Scientific Basis for High-Intensity Interval Training: Optimising Training Programmes and Maximising Performance in Highly Trained Endurance Athletes, Sports Med, vol.32, pp.53-73, 2002.

L. Léger and R. Boucher, An Indirect Continuous Running Multistage Field Test: The Universite de Montreal Track Test*, Can. J. Appl. Physiol. Rev. Can. Physiol. Appl, vol.11, 1980.

B. D. Levine and J. Stray-gundersen, Living high-training low": effect of moderatealtitude acclimatization with low-altitude training on performance, J. Appl. Physiol. Bethesda Md, vol.83, pp.102-112, 1985.

J. Lin, F. Wang, R. B. Weiner, J. R. Deluca, M. M. Wasfy et al., Blood Pressure and Left Ventricular Remodeling Among American Style Football Players, JACC Cardiovasc. Imaging, vol.9, pp.1367-1376, 2016.

A. Lindsay, N. Draper, J. Lewis, S. P. Gieseg, and N. Gill, Positional demands of professional rugby, Eur. J. Sport Sci, vol.15, pp.480-487, 2015.

C. Lundby, J. A. Calbet, and P. Robach, The response of human skeletal muscle tissue to hypoxia, Cell. Mol. Life Sci, vol.66, pp.3615-3623, 2009.

L. Luteberget, L. S. Spencer, and M. , High Intensity Events in International Female Team Handball Matches, Int. J. Sports Physiol. Perform, 2016.

L. S. Luteberget, B. R. Holme, and M. Spencer, Reliability of Wearable Inertial Measurement Units to Measure Physical Activity in Team Handball, Int. J. Sports Physiol. Perform, vol.13, pp.467-473, 2018.

S. J. Macleod, C. Hagan, M. Egaña, J. Davis, D. et al., The Use of Microtechnology to Monitor Collision Performance in Professional Rugby Union, Int. J. Sports Physiol. Perform, pp.1-26, 2018.

S. Malone, M. Roe, D. A. Doran, T. J. Gabbett, C. et al., High chronic training loads and exposure to bouts of maximal velocity running reduce injury risk in elite Gaelic football, J. Sci. Med. Sport, vol.20, pp.250-254, 2017.

S. Mandigout, C. Maufrais, T. Cornette, A. Alaphilippe, and J. C. Daviet, Speckle tracking echocardiographic analysis of left ventricular systolic and diastolic function in young elite rugby players, J. Sports Med. Phys. Fitness, vol.56, pp.1401-1409, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01216387

B. Marrier, Gestion stratégique de la charge d'entraînement en rugby à 7 pour l'optimisation de la performance physique en compétition, 2018.

C. Maufrais, I. Schuster, G. Doucende, D. Vitiello, T. Rupp et al., Endurance training minimizes age-related changes of left ventricular twistuntwist mechanics, J. Am. Soc. Echocardiogr. Off. Publ. Am. Soc. Echocardiogr, vol.27, pp.1208-1215, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01141533

C. Maufrais, G. P. Millet, I. Schuster, T. Rupp, and S. Nottin, Progressive and biphasic cardiac responses during extreme mountain ultramarathon, Am. J. Physiol. Heart Circ. Physiol, vol.310, pp.1340-1348, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01907808

P. Mcdonough, B. J. Behnke, D. J. Padilla, T. I. Musch, and D. C. Poole, Control of microvascular oxygen pressures in rat muscles comprised of different fibre types, J. Physiol, vol.563, pp.903-913, 2005.

K. Mcgawley and D. Bishop, Anaerobic and aerobic contribution to two, 5 x 6-s repeated-sprint bouts, Coach. Sport Sci. J, vol.3, p.52, 2008.

T. Mckenna, A. Lees, K. Davids, and W. J. Murphy, Proceedings of the first World Congress of Science and Football, pp.13-17, 1987.

S. J. Mclaren, M. Weston, A. Smith, R. Cramb, and M. D. Portas, Variability of physical performance and player match loads in professional rugby union, J. Sci. Med. Sport, vol.19, pp.493-497, 2016.

D. A. Mclean, Analysis of the physical demands of international rugby union, J. Sports Sci, vol.10, pp.285-296, 1992.

G. Medbo and J. , Aerobic and anarobic energy release during 10 and 30 s bicycle sprints, Acta Kinesiol, 1999.

A. Mendez-villanueva, J. Edge, R. Suriano, P. Hamer, and D. Bishop, The Recovery of Repeated-Sprint Exercise Is Associated with PCr Resynthesis, while Muscle pH and EMG Amplitude Remain Depressed, PLOS ONE, vol.7, 2012.

A. W. Midgley and L. R. Mc-naughton, Time at or near VO2max during continuous and intermittent running. A review with special reference to considerations for the optimisation of training protocols to elicit the longest time at or near VO2max, J. Sports Med. Phys. Fitness, vol.46, pp.1-14, 2006.

C. Mihl, W. R. Dassen, and H. Kuipers, Cardiac remodelling: concentric versus eccentric hypertrophy in strength and endurance athletes, Neth. Heart J, vol.16, pp.129-133, 2008.

G. P. Millet, F. Brocherie, R. Faiss, and O. Girard, Entraînement en altitude dans les sports collectifs, 2015.

J. H. Mitchell, W. Haskell, P. Snell, V. Camp, and S. P. , Task Force 8: Classification of sports, J. Am. Coll. Cardiol, vol.45, pp.1364-1367, 2005.

M. Mohr, P. Krustrup, and J. Bangsbo, Match performance of high-standard soccer players with special reference to development of fatigue, J. Sports Sci, vol.21, pp.519-528, 2003.

M. Mohr, P. Krustrup, and J. Bangsbo, Fatigue in soccer: A brief review, J. Sports Sci, vol.23, pp.593-599, 2005.

I. P. Monte, S. Mangiafico, S. Buccheri, V. E. Bottari, V. Lavanco et al., Myocardial deformational adaptations to different forms of training: a real-time three-dimensional speckle tracking echocardiographic study, Heart Vessels, vol.30, pp.386-395, 2015.

D. Montero and C. Lundby, No Improved Performance With Repeated-Sprint Training in Hypoxia Versus Normoxia: A Double-Blind and Crossover Study, Int. J. Sports Physiol. Perform, vol.12, pp.161-167, 2017.

B. Morel, D. M. Rouffet, D. J. Bishop, S. J. Rota, and C. A. Hautier, Fatigue Induced by Repeated Maximal Efforts is Specific to the Rugby Task Performed, Int. J. Sports Sci. Coach, vol.10, pp.11-20, 2015.

J. Morganroth, B. J. Maron, W. L. Henry, and S. E. Epstein, Comparative left ventricular dimensions in trained athletes, Ann. Intern. Med, vol.82, pp.521-524, 1975.

S. C. Morrison, D. G. Stubbing, P. V. Zimmerman, and E. J. Campbell, Lung volume, closing volume, and gas exchange, J. Appl. Physiol, vol.52, pp.1453-1457, 1982.

S. F. Nagueh, Echocardiographic assessment of left ventricular relaxation and cardiac filling pressures, Curr. Heart Fail. Rep, vol.6, pp.154-159, 2009.

S. F. Nagueh, K. J. Middleton, H. A. Kopelen, W. A. Zoghbi, and M. A. Quiñones, , 1997.

, Doppler Tissue Imaging: A Noninvasive Technique for Evaluation of Left Ventricular Relaxation and Estimation of Filling Pressures, J. Am. Coll. Cardiol, vol.30, pp.1527-1533

L. H. Naylor, K. George, G. O'driscoll, and D. J. Green, The Athlete's Heart, Sports Med, vol.38, pp.69-90, 2008.

M. A. Newman, K. M. Tarpenning, and F. E. Marino, Relationships between isokinetic knee strength, single-sprint performance, and repeated-sprint ability in football players, J. Strength Cond. Res, vol.18, pp.867-872, 2004.

C. W. Nicholas, Anthropometric and Physiological Characteristics of Rugby Union Football Players, Sports Med, vol.23, pp.375-396, 1997.

D. P. Nicolella, L. Torres-ronda, K. J. Saylor, and X. Schelling, Validity and reliability of an accelerometer-based player tracking device, PLOS ONE, vol.13, 2018.

T. D. Noakes, Fatigue is a Brain-Derived Emotion that Regulates the Exercise Behavior to Ensure the Protection of Whole Body Homeostasis, Front. Physiol, vol.3, 2012.

J. M. Norton, Toward consistent definitions for preload and afterload, Adv. Physiol. Educ, vol.25, pp.53-61, 2001.

Y. Notomi, M. G. Martin-miklovic, S. J. Oryszak, T. Shiota, D. Deserranno et al., Enhanced Ventricular Untwisting During Exercise: A Mechanistic Manifestation of Elastic Recoil Described by Doppler Tissue Imaging, Circulation, vol.113, pp.2524-2533, 2006.

S. Nottin, L. Nguyen, M. Terbah, and P. Obert, Left ventricular function in endurance-trained children by tissue Doppler imaging, Med. Sci. Sports Exerc, vol.36, pp.1507-1513, 2004.

T. Olds, The evolution of physique in male rugby union players in the twentieth century, J. Sports Sci, vol.19, pp.253-262, 2001.

A. Opdahl, T. Helle-valle, H. Skulstad, and O. A. Smiseth, Strain, Strain Rate, Torsion, and Twist: Echocardiographic Evaluation, Curr. Cardiol. Rep, vol.17, 2015.

E. Ortega, D. Villarejo, and J. M. Palao, Differences in Game Statistics Between Winning and Losing Rugby Teams in the Six Nations Tournament, J. Sports Sci. Med, vol.8, pp.523-527, 2009.

C. Osgnach, S. Poser, R. Bernardini, R. Rinaldo, and P. E. Di-prampero, Energy cost and metabolic power in elite soccer: a new match analysis approach, Med. Sci. Sports Exerc, vol.42, pp.170-178, 2010.

S. M. Owen, R. E. Venter, S. Du-toit, and W. J. Kraak, Acceleratory match-play demands of a Super Rugby team over a competitive season, J. Sports Sci, vol.33, pp.2061-2069, 2015.

S. W. Patterson, H. Piper, and E. H. Starling, The regulation of the heart beat, J. Physiol, vol.48, pp.465-513, 1914.

A. Pelliccia, F. Culasso, F. M. Di-paolo, and B. J. Maron, Physiologic left ventricular cavity dilatation in elite athletes, Ann. Intern. Med, vol.130, pp.23-31, 1999.

B. M. Pluim, A. H. Zwinderman, A. Laarse, . Van-der, E. E. Wall et al., The Athlete's Heart: A Meta-Analysis of Cardiac Structure and Function, Circulation, vol.101, pp.336-344, 2000.

B. T. Pollard, A. N. Turner, R. Eager, D. J. Cunningham, C. J. Cook et al., The Ball in Play Demands of International Rugby Union, J. Sci. Med. Sport, vol.0, 2018.

S. D. Prabhu and G. L. Freeman, Kinetics of restitution of left ventricular relaxation, Circ. Res, vol.70, pp.29-38, 1992.

P. E. Di-prampero, Sprint running: a new energetic approach, J. Exp. Biol, vol.208, pp.2809-2816, 2005.
URL : https://hal.archives-ouvertes.fr/hal-01859289

J. Puype, K. Van-proeyen, J. Raymackers, L. Deldicque, and P. Hespel, Sprint Interval Training in Hypoxia Stimulates Glycolytic Enzyme Activity, vol.45, pp.2166-2174, 2013.

D. B. Pyne, P. U. Saunders, P. G. Montgomery, A. J. Hewitt, and K. Sheehan, , 2008.

, Relationships Between Repeated Sprint Testing, Speed, and Endurance, J. Strength Cond. Res, vol.22, pp.1633-1637

K. L. Quarrie and W. G. Hopkins, Changes in player characteristics and match activities in Bledisloe Cup rugby union from 1972 to, J. Sports Sci, vol.25, pp.895-903, 2004.

K. L. Quarrie, P. Handcock, M. J. Toomey, and A. E. Waller, The New Zealand rugby injury and performance project. IV. Anthropometric and physical performance comparisons between positional categories of senior A rugby players, Br. J. Sports Med, vol.30, pp.53-56, 1996.

K. L. Quarrie, W. G. Hopkins, M. J. Anthony, and N. D. Gill, Positional demands of international rugby union: evaluation of player actions and movements, J. Sci. Med. Sport, vol.16, pp.353-359, 2013.

S. Racinais, D. Bishop, R. Denis, G. Lattier, A. Mendez-villaneuva et al., , 2007.

, Muscle Deoxygenation and Neural Drive to the Muscle during Repeated Sprint Cycling, Med. Sci. Sports Exerc, vol.39, pp.268-274

E. Rampinini, A. Coutts, C. Castagna, R. Sassi, and F. Impellizzeri, Variation in Top Level Soccer Match Performance, Int. J. Sports Med, vol.28, pp.1018-1024, 2007.

E. Rampinini, A. Sassi, A. Morelli, S. Mazzoni, M. Fanchini et al., , 2009.

, Repeated-sprint ability in professional and amateur soccer players, Appl. Physiol. Nutr. Metab, vol.34, pp.1048-1054

M. B. Randers, I. Mujika, A. Hewitt, J. Santisteban, R. Bischoff et al., Application of four different football match analysis systems: A comparative study, J. Sports Sci, vol.28, pp.171-182, 2010.

D. Read, D. Weaving, P. Phibbs, J. Darrall-jones, G. Roe et al., Movement and physical demands of school and university rugby union match-play in England, BMJ Open Sport Exerc. Med, vol.2, p.147, 2017.

D. B. Read, B. Jones, P. J. Phibbs, G. A. Roe, J. Darrall-jones et al., The physical characteristics of match-play in English schoolboy and academy rugby union, J. Sports Sci, vol.36, pp.645-650, 2018.

D. B. Read, K. Till, G. Beasley, M. Clarkson, R. Heyworth et al., Maximum running intensities during English academy rugby union match-play, Sci. Med. Footb, pp.1-7, 2018.

D. B. Read, B. Jones, S. Williams, P. Phibbs, J. Darrall-jones et al., The Physical Characteristics of Specific Phases of Play During Rugby Union Match-Play, Int. J. Sports Physiol. Perform, pp.1-21, 2018.

C. Reardon, D. P. Tobin, and E. Delahunt, Application of Individualized Speed Thresholds to Interpret Position Specific Running Demands in Elite Professional Rugby Union: A GPS Study, PloS One, vol.10, 2015.

C. Reardon, D. P. Tobin, P. Tierney, and E. Delahunt, The worst case scenario: Locomotor and collision demands of the longest periods of gameplay in professional rugby union, PLoS ONE, vol.12, 2017.

T. Reilly, T. , and V. , A motion analysis of work-rate in different positional roles in professional fooball match-play, J. Hum. Mov. Stud, vol.2, pp.87-97, 1976.

A. D. Roberts, R. Billeter, and H. Howald, Anaerobic Muscle Enzyme Changes After Interval Training, Int. J. Sports Med, vol.03, pp.18-21, 1982.

S. P. Roberts, G. Trewartha, R. J. Higgitt, J. El-abd, and K. A. Stokes, The physical demands of elite English rugby union, J. Sports Sci, vol.26, pp.825-833, 2008.

J. L. Robotham, M. Takata, M. Berman, and Y. Harasawa, Ejection fraction revisited, Anesthesiology, vol.74, pp.172-183, 1991.

M. Roell, K. Roecker, D. Gehring, H. Mahler, and A. Gollhofer, Player Monitoring in Indoor Team Sports: Concurrent Validity of Inertial Measurement Units to Quantify Average and Peak Acceleration Values, Front. Physiol, vol.9, 2018.

A. Ross, M. Leveritt, and S. Riek, Neural influences on sprint running: training adaptations and acute responses, Sports Med. Auckl. NZ, vol.31, pp.409-425, 2001.

A. Ross, N. Gill, J. Cronin, and R. Malcata, The relationship between physical characteristics and match performance in rugby sevens, Eur. J. Sport Sci, vol.15, pp.565-571, 2015.

C. Rothe, Toward consistent definitions for preload and afterload-revisited, Adv. Physiol. Educ, vol.27, pp.44-45, 2003.

R. L. Ruff, L. Simoncini, and W. Stüuhmer, Slow sodium channel inactivation in mammalian muscle: A possible role in regulating excitability, Muscle Nerve, vol.11, pp.502-510, 1988.

B. Saltin, B. Essen, and P. K. Pedersen, Intermittent Exercise: its Physiology and some Practical Applications, pp.23-51, 1976.

A. Santoro, F. Alvino, G. Antonelli, M. Caputo, M. Padeletti et al., Endurance and Strength Athlete's Heart: Analysis of Myocardial Deformation by Speckle Tracking Echocardiography, J. Cardiovasc. Ultrasound, vol.22, 0196.

M. T. Scott, T. J. Scott, and V. G. Kelly, The Validity and Reliability of Global Positioning Systems in Team Sport: A Brief Review, J. Strength Cond. Res, vol.30, pp.1470-1490, 2016.

. Sedeaud, Rugby morphologies: "bigger and taller", reflects an early directional selection. -PubMed -NCBI, J. Sports Med. Phys. Fitness, 2013.
URL : https://hal.archives-ouvertes.fr/hal-01778398

A. Sedeaud, A. Marc, J. Schipman, M. Tafflet, J. Hager et al., How they won Rugby World Cup through height, mass and collective experience, Br. J. Sports Med, vol.46, pp.580-584, 2012.
URL : https://hal.archives-ouvertes.fr/hal-01778383

P. P. Sengupta, J. Korinek, M. Belohlavek, J. Narula, M. A. Vannan et al., Left Ventricular Structure and Function, J. Am. Coll. Cardiol, vol.48, 1988.

P. P. Sengupta, V. K. Krishnamoorthy, J. Korinek, J. Narula, M. A. Vannan et al., Left Ventricular Form and Function Revisited: Applied Translational Science to Cardiovascular Ultrasound Imaging, J. Am. Soc. Echocardiogr. Off. Publ. Am. Soc. Echocardiogr, vol.20, pp.539-551, 2007.

P. P. Sengupta, A. J. Tajik, K. Chandrasekaran, and B. K. Khandheria, Twist Mechanics of the Left Ventricle: Principles and Application, JACC Cardiovasc. Imaging, vol.1, pp.366-376, 2008.

J. Seo, D. Kim, W. Kim, J. Song, D. Kang et al., Peak systolic velocity of mitral annular longitudinal movement measured by pulsed tissue Doppler imaging as an index of global left ventricular contractility, Am. J. Physiol.-Heart Circ. Physiol, vol.298, pp.1608-1615, 2010.

L. M. Shapiro, Physiological left ventricular hypertrophy, Br. Heart J, vol.52, pp.130-135, 1984.

R. L. Sharp, D. L. Costill, W. J. Fink, and D. S. King, Effects of eight weeks of bicycle ergometer sprint training on human muscle buffer capacity, Int. J. Sports Med, vol.7, pp.13-17, 1986.

J. M. Sheppard, Y. , and W. B. , Agility literature review: Classifications, training and testing, J. Sports Sci, vol.24, pp.919-932, 2006.

Z. Simsek, M. Hakan-tas, H. Degirmenci, A. Gokhan-yaz?c?, E. Ipek et al., Speckle tracking echocardiographic analysis of left ventricular systolic and diastolic functions of young elite athletes with eccentric and concentric type of cardiac remodeling, Echocardiogr. Mt. Kisco N, vol.30, pp.1202-1208, 2013.

A. C. Sirotic, A. J. Coutts, H. Knowles, and C. Catterick, A comparison of match demands between elite and semi-elite rugby league competition, J. Sports Sci, vol.27, pp.203-211, 2009.

D. Smart, W. G. Hopkins, K. L. Quarrie, and N. Gill, The relationship between physical fitness and game behaviours in rugby union players, Eur. J. Sport Sci, vol.14, issue.1, pp.8-17, 2014.

D. J. Smart, W. G. Hopkins, and N. D. Gill, Differences and changes in the physical characteristics of professional and amateur rugby union players, J. Strength Cond. Res, vol.27, pp.3033-3044, 2013.

K. Söderlund and E. Hultman, ATP and phosphocreatine changes in single human muscle fibers after intense electrical stimulation, Am. J. Physiol, vol.261, pp.737-741, 1991.

R. J. Solaro, Regulation of Cardiac Contractility, 2011.

M. Spencer, S. Lawrence, C. Rechichi, D. Bishop, B. Dawson et al., , 2004.

, Time-motion analysis of elite field hockey, with special reference to repeated-sprint activity, J. Sports Sci, vol.22, pp.843-850

M. Spencer, D. Bishop, B. Dawson, and C. Goodman, Physiological and metabolic responses of repeated-sprint activities:specific to field-based team sports, Sports Med. Auckl. NZ, vol.35, pp.1025-1044, 2005.

M. Spencer, D. Bishop, B. Dawson, C. Goodman, and R. Duffield, Metabolism and Performance in Repeated Cycle Sprints: Active versus Passive Recovery, Med. Sci. Sports Exerc, vol.38, pp.1492-1499, 2006.

M. J. Speranza, T. J. Gabbett, D. A. Greene, R. D. Johnston, and J. M. Sheppard, , 2017.

, Changes in Rugby League Tackling Ability During a Competitive Season: The Relationship With Strength and Power Qualities, J. Strength Cond. Res, vol.31, pp.3311-3318

M. J. Speranza, T. J. Gabbett, D. A. Greene, R. D. Johnston, and A. D. Townshend, , 2018.

, Relationship Between 2 Standardized Tackling Proficiency Tests and Rugby League MatchPlay Tackle Performance, Int. J. Sports Physiol. Perform, vol.13, pp.770-776

P. Spirito, A. Pelliccia, M. A. Proschan, M. Granata, A. Spataro et al., Morphology of the "athlete's heart" assessed by echocardiography in 947 elite athletes representing 27 sports, Am. J. Cardiol, vol.74, pp.802-806, 1994.

L. L. Spriet, M. I. Lindinger, R. S. Mckelvie, G. J. Heigenhauser, and N. L. Jones, , 1989.

, Muscle glycogenolysis and H+ concentration during maximal intermittent cycling, J. Appl. Physiol, vol.66, pp.8-13

L. J. Suárez-arrones, L. J. Portillo, J. M. González-ravé, V. E. Muñoz, and F. Sanchez, Match running performance in Spanish elite male rugby union using global positioning system, Isokinet. Exerc. Sci, vol.20, pp.77-83, 2012.

R. Swaby, P. A. Jones, and P. Comfort, Relationship between Maximum Aerobic Speed Performance and Distance Covered in Rugby Union Games, J. Strength Cond. Res. Natl. Strength Cond. Assoc, 2016.

D. Sykes, C. Twist, C. Nicholas, and K. Lamb, Changes in locomotive rates during senior elite rugby league matches, J. Sports Sci, vol.29, pp.1263-1271, 2011.

I. Szauder, A. Kovács, and G. Pavlik, Comparison of left ventricular mechanics in runners versus bodybuilders using speckle tracking echocardiography, Cardiovasc. Ultrasound, vol.13, p.7, 2015.

L. A. Taber, M. Yang, and W. W. Podszus, Mechanics of ventricular torsion, J. Biomech, vol.29, pp.745-752, 1996.

J. Taylor, T. Macpherson, I. Spears, W. , and M. , The effects of repeated-sprint training on field-based fitness measures: a meta-analysis of controlled and non-controlled trials, Sports Med. Auckl. NZ, vol.45, pp.881-891, 2015.

J. C. Tee and Y. Coopoo, Movement and impact characteristics of South African professional rugby union players. South Afr, J. Sports Med, vol.27, pp.33-39, 2015.

J. C. Tee, M. I. Lambert, and Y. Coopoo, GPS comparison of training activities and game demands of professional rugby union, Int. J. Sports Sci. Coach, vol.11, pp.200-211, 2016.

J. C. Tee, M. I. Lambert, and Y. Coopoo, Impact of fatigue on positional movements during professional Rugby Union match play, Int. J. Sports Physiol. Perform, pp.1-21, 2016.

J. Ternacle, C. Bremont, T. Humieres, L. Faivre, H. L. Doan et al., Left ventricular dyssynchrony and 2D and 3D global longitudinal strain for differentiating physiological and pathological left ventricular hypertrophy, Arch. Cardiovasc. Dis, vol.110, pp.403-412, 2017.

J. D. Thomas and Z. B. Popovi?, Assessment of Left Ventricular Function by Cardiac Ultrasound, J. Am. Coll. Cardiol, vol.48, pp.2012-2025, 2006.

C. Thomas, P. Sirvent, S. Perrey, E. Raynaud, and J. Mercier, Relationships between maximal muscle oxidative capacity and blood lactate removal after supramaximal exercise and fatigue indexes in humans, J. Appl. Physiol, vol.97, pp.2132-2138, 2004.
URL : https://hal.archives-ouvertes.fr/hal-01587415

P. Tierney, D. P. Tobin, C. Blake, and E. Delahunt, Attacking 22 entries in rugby union: running demands and differences between successful and unsuccessful entries, Scand. J. Med. Sci. Sports, 2016.

D. L. Tomlin and H. A. Wenger, The Relationship Between Aerobic Fitness and Recovery from High Intensity Intermittent Exercise, Sports Med, vol.31, pp.1-11, 2001.

F. Torrent-guasp, M. Ballester, G. D. Buckberg, F. Carreras, A. Flotats et al., Spatial orientation of the ventricular muscle band: Physiologic contribution and surgical implications, J. Thorac. Cardiovasc. Surg, vol.122, pp.389-392, 2001.

P. J. Treadwell, A. Lees, K. Davids, and W. J. Murphy, Computer-aided match analysis of selected ball games (soccer and rugby union, 1988.

L. Trincat, X. Woorons, and G. P. Millet, Repeated-Sprint Training in Hypoxia Induced by Voluntary Hypoventilation in Swimming, Int. J. Sports Physiol. Perform, vol.12, pp.329-335, 2017.

A. Urhausen, Are the cardiac effects of anabolic steroid abuse in strength athletes reversible?, Heart, vol.90, pp.496-501, 2004.

V. Utomi, D. Oxborough, G. P. Whyte, J. Somauroo, S. Sharma et al., Systematic review and meta-analysis of training mode, imaging modality and body size influences on the morphology and function of the male athlete's heart, Heart, vol.99, pp.1727-1733, 2013.

V. Utomi, D. Oxborough, E. Ashley, R. Lord, S. Fletcher et al., Predominance of normal left ventricular geometry in the male "athlete's heart, Heart Br. Card. Soc, vol.100, pp.1264-1271, 2014.

M. C. Varley and R. J. Aughey, Acceleration Profiles in Elite Australian Soccer, Int. J. Sports Med, vol.34, pp.34-39, 2013.

M. C. Varley, A. Jaspers, W. F. Helsen, and J. J. Malone, Methodological Considerations When Quantifying High-Intensity Efforts in Team Sport Using Global Positioning System Technology, Int. J. Sports Physiol. Perform, vol.12, pp.1059-1068, 2017.

R. E. Venter, E. Opperman, and S. Opperman, The use of Global Positioning System (GPS) tracking devices to assess movement demands and impacts in Under-19 Rugby Union match play, Afr. J. Phys. Act. Health Sci, vol.17, 2011.

D. Vinereanu, N. Florescu, N. Sculthorpe, A. C. Tweddel, M. R. Stephens et al., Left ventricular long-axis diastolic function is augmented in the hearts of endurancetrained compared with strength-trained athletes, Clin. Sci, vol.103, pp.249-257, 2002.

A. Vitarelli, L. Capotosto, G. Placanica, F. Caranci, M. Pergolini et al., Comprehensive assessment of biventricular function and aortic stiffness in athletes with different forms of training by three-dimensional echocardiography and strain imaging, Eur. Heart J. -Cardiovasc. Imaging, vol.14, pp.1010-1020, 2013.

D. Vitiello, T. Rupp, J. Bussière, P. Robach, A. Polge et al., , 2013.

, Myocardial damages and left and right ventricular strains after an extreme mountain ultra-long duration exercise, Int. J. Cardiol, vol.165, pp.391-392

M. Waldron, J. Highton, M. Daniels, and C. Twist, Preliminary Evidence of Transient Fatigue and Pacing during Interchanges in Rugby League, Int. J. Sports Physiol. Perform, vol.8, pp.157-164, 2013.

D. Weaving, S. Whitehead, K. Till, and B. Jones, Validity of Real-Time Data Generated by a Wearable Microtechnology Device, J. Strength Cond. Res, vol.31, pp.2876-2879, 2017.

F. Weidemann, F. Jamal, G. R. Sutherland, P. Claus, M. Kowalski et al., Myocardial function defined by strain rate and strain during alterations in inotropic states and heart rate, Am. J. Physiol.-Heart Circ. Physiol, vol.283, pp.792-799, 2002.

R. B. Weiner, A. M. Hutter, F. Wang, J. Kim, A. E. Weyman et al., The impact of endurance exercise training on left ventricular torsion, JACC Cardiovasc. Imaging, vol.3, pp.1001-1009, 2010.

H. Westerblad, D. G. Allen, and J. Lännergren, Muscle fatigue: lactic acid or inorganic phosphate the major cause?, News Physiol. Sci. Int. J. Physiol. Prod. Jointly Int. Union Physiol. Sci. Am. Physiol. Soc, vol.17, pp.17-21, 2002.

S. Whitehead, K. Till, D. Weaving, and B. Jones, The Use of Microtechnology to Quantify the Peak Match Demands of the Football Codes: A Systematic Review, Sports Med, pp.1-27, 2018.

J. Williams, M. Hughes, and P. Donoghue, The effect of rule changes on match and ball in play time in rugby union, Int. J. Perform. Anal. Sport, vol.5, pp.1-11, 2005.

B. Wisbey, P. G. Montgomery, D. B. Pyne, and B. Rattray, Quantifying movement demands of AFL football using GPS tracking, J. Sci. Med. Sport, vol.13, pp.531-536, 2010.

W. Witte, Accuracy of non-differential GPS for the determination of speed over ground. -PubMed -NCBI, J. Biomech, 2004.

X. Woorons, P. Mollard, A. Pichon, A. Duvallet, J. Richalet et al., Prolonged expiration down to residual volume leads to severe arterial hypoxemia in athletes during submaximal exercise, Respir. Physiol. Neurobiol, vol.158, pp.75-82, 2007.

X. Woorons, P. Mollard, A. Pichon, C. Lamberto, A. Duvallet et al., , 2007.

, Moderate exercise in hypoxia induces a greater arterial desaturation in trained than untrained men. Scand, J. Med. Sci. Sports, vol.17, pp.431-436

X. Woorons, P. Mollard, A. Pichon, A. Duvallet, J. Richalet et al., Effects of a 4-week training with voluntary hypoventilation carried out at low pulmonary volumes, Respir. Physiol. Neurobiol, vol.160, pp.123-130, 2008.

X. Woorons, N. Bourdillon, H. Vandewalle, C. Lamberto, P. Mollard et al., Exercise with hypoventilation induces lower muscle oxygenation and higher blood lactate concentration: role of hypoxia and hypercapnia, Eur. J. Appl. Physiol, vol.110, pp.367-377, 2010.

X. Woorons, N. Bourdillon, C. Lamberto, H. Vandewalle, J. Richalet et al., Cardiovascular responses during hypoventilation at exercise, Int. J. Sports Med, vol.32, pp.438-445, 2011.

X. Woorons, F. Gamelin, C. Lamberto, A. Pichon, and J. P. Richalet, Swimmers can train in hypoxia at sea level through voluntary hypoventilation, Respir. Physiol. Neurobiol, vol.190, pp.33-39, 2014.

X. Woorons, P. Mucci, J. P. Richalet, and A. Pichon, Hypoventilation Training at Supramaximal Intensity Improves Swimming Performance, Med. Sci. Sports Exerc, vol.48, pp.1119-1128, 2016.

X. Woorons, P. Mucci, J. Aucouturier, A. Anthierens, and G. P. Millet, Acute effects of repeated cycling sprints in hypoxia induced by voluntary hypoventilation, Eur. J. Appl. Physiol, 2017.

D. Wundersitz, P. Gastin, S. Robertson, P. Davey, and K. Netto, Validation of a Trunk-mounted Accelerometer to Measure Peak Impacts during Team Sport Movements, Int. J. Sports Med, vol.36, pp.742-746, 2015.

Y. Yamamoto, Y. Mutoh, H. Kobayashi, and M. Miyashita, Effects of reduced frequency breathing on arterial hypoxemia during exercise, Eur. J. Appl. Physiol, vol.56, pp.522-527, 1987.

W. A. Zoghbi, Cardiac Remodeling in American-Style Football Players: Field Position Matters *, JACC Cardiovasc. Imaging, vol.9, pp.1377-1379, 2016.

, Standardized lung function testing: report ; official statement of the, Munksgaard)