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Analyse de la performance en trail courte distance : Déterminants physiologiques, spécificité de la sollicitation musculaire et stratégies d’optimisation

Abstract : This thesis project aimed at improving scientific knowledge in the field of short distance trail running, a “booming” outdoor activity. Situated between "traditional" road races and ultra-trail races, limited research has focused on the analysis of short distance trail running. The first objective was to characterize the physiological determinants of performance during short distance trail running races in a population of highly trained runners, using an experimental setting between laboratory protocols and an official event, in order to establish a performance model more suited than the traditional endurance road running model, by including specific variables. Thus, the identification of muscular endurance as a major factor in performance led to consider the wearing of compression textiles as an external strategy for muscle function preservation during exercise. The second objective was therefore to study the acute and delayed impact of wearing a compression garments during a short distance trail or during an intense eccentric exercise (ie. downhill running) on the vibrations of the soft tissues, the neuromuscular and energetics parameters and acute and delayed muscle soreness in highly trained trail runners. The attenuation of soft tissue vibrations induced by wearing high intensity compression garments may contribute, at least in part, to the reduction of the voluntary activation deficit measured immediately after the trail or downhill run and to the improvement of neuromuscular function in the recovery phase. Our results suggest that the use of garments with high compression intensity during exercise could exert a “mechanical protective effect”, which could therefore constitute an external strategy to tolerate a high training load or optimize the recovery process in multi-stage races.
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Submitted on : Thursday, April 1, 2021 - 3:01:22 PM
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Sabine Ehrström. Analyse de la performance en trail courte distance : Déterminants physiologiques, spécificité de la sollicitation musculaire et stratégies d’optimisation. Physiologie [q-bio.TO]. Université Côte d'Azur, 2020. Français. ⟨NNT : 2020COAZ4104⟩. ⟨tel-03187923⟩

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