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Approche dynamique de l'utilisation d'un cheval mécanique au service de la rééducation posturale de patients cérébrolésés

Abstract : Rooted in the dynamical system approach of motor control, the aim of this thesis is to analyze the motor coordination of healthy and brain-damaged participants oscillating on a new rehabilitation tool: the mechanical horse. The analysis of spontaneous coordination exhibited by individuals on this horse and the learned coordination adopted after a learning phase provided by the addition of a visual biofeedback allowed (i) to determine the usefulness of biofeedback in learning an oscillating task and (ii) to evaluate the interest of a 24 sessions rehabilitation protocol performed using the mechanical horse. The final goal is to participate to the development of a postural rehabilitation protocol for a population of brain-damaged patients. The first study allowed to highlight the role of expertise in the dynamics of the postural coordination on the mechanical horse bringing the expert riders towards a more adapted postural coordination (i.e. maintaining in phase and antiphase patterns). Through this first analysis, the spontaneous trunk/horse coordination was highlighted as antiphase, corresponding to the coordination found in real equestrian activity. Furthermore, the implementation of a learning method (study 2) allowed to modify the postural behavior of novice riders after only 3 sessions. The oscillation frequency had a significant impact on the coordination of participants who fell in an antiphase coordination (strong attractor) when the environmental constraint was high. However concerning those novice but healthy participants, this experiment did not demonstrate the real value of an additional video feedback during learning of a new postural coordination. Finally, the third study performed in brain-damaged patients showed the interest of this new rehabilitation method on the postural coordination of these patients. After 24 sessions, their coordination was different from the one of the control group, allowing to highlight their ability to adapt of constraints and to develop specific modes of postural coordination (trunk/horse antiphase) in order to optimize their posture.
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Submitted on : Tuesday, January 15, 2019 - 11:04:13 AM
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  • HAL Id : tel-01981662, version 1


Héloïse Baillet. Approche dynamique de l'utilisation d'un cheval mécanique au service de la rééducation posturale de patients cérébrolésés. Education. Normandie Université, 2018. Français. ⟨NNT : 2018NORMR078⟩. ⟨tel-01981662⟩



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