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Mesure et modélisation bioénergétique des exercices intermittents : application au tennis

Abstract : The aim of this study was to present a simple method to access the aerobic and anaerobic components of energy expenditure during activities as tennis. The principle consists in dividing the exercise into several fundamental activities (FA) based on a video recording and to estimate the metabolic power (MP) of each FA, the aerobic energy expenditure (EEO2mod) and the anaerobic energy expenditure thanks to the Astrabio© model. Six FA are selected and each FA is described by a “strain function” connecting MP to the selected pertinent mechanical variable M (speed running V and events frequency ω). The video analysis is used to determine FA, V and ω during tennis match. The parameters V and ω are introduced in the Astrabio© model to calculate MP of each FA. Then, this model calculated the aerobic energy expenditure (EEO2mod) in terms of MP and the anaerobic energy expenditures was calculated by substracting this (EEO2mod). There was no significant difference between calculated and measured oxygen consumptions (p<0.05). This method shows that even when the aerobic EE average is quite low and nearing 50% of VO2max, the total energy expenditure of a point can reach up 2 or 3 times the VO2max of the subjects during points and strokes. In tennis anaerobic metabolism can account for around 30% of the total energy expenditure per game, and almost 70% during points. The interest of this method is to provide a good estimation of aerobic and anaerobic energy expenditures thanks to a simple video analysis. This method presents the advantage that it is easy to apply and requires only simple and inexpensive equipment: a camera, a computer, and a tracking software
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Submitted on : Thursday, September 19, 2013 - 11:37:12 AM
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  • HAL Id : tel-00863609, version 1



Florent Botton. Mesure et modélisation bioénergétique des exercices intermittents : application au tennis. Médecine humaine et pathologie. Université Claude Bernard - Lyon I, 2011. Français. ⟨NNT : 2011LYO10206⟩. ⟨tel-00863609⟩



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