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Étude des adaptations locomotrices lors d'un portage dorsal chez l'adolescent

Abstract : Load carriage corresponds to a courant practice, especially for adolescents who use to carry a schoolbag. This load carriage entails several adaptations (kinematical, physiological...). The aim of this work is to quantify adaptations during adolescents schoolbag carrying. First part of this study is based on sociological analysis (type of schoolbag, method of carriage, weight of schoolbag...). This lets to establish the principal particularities of schoolbag carrying and a classification of population with these sociological parameters. In second part, the movement analysis has been focused on coordination and electromygraphy on lower limbs. The studied conditions are: unload, 10% bodyweight and 20% bodyweight. The biomechanical results show two important results. On one hand, the results show an adaptation with same amplitude for both the load carriage conditions. On other hand, according to individuals, this adaptation can be more or less important: this result shows different classes that depend on gait clusters, movements of bag, anthropology of subject. The study is completed with a muscular activity analysis on the main muscles of ankle. The muscular contraction pattern is studied with several approaches: characteristic instants, envelope of signal and co-contraction. The heavier the bag is, the longer the contractions are, without inducing co-contraction of the muscles studied
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https://hal-uphf.archives-ouvertes.fr/tel-03001933
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  • HAL Id : tel-03001933, version 1

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Yannick Delpierre. Étude des adaptations locomotrices lors d'un portage dorsal chez l'adolescent. Biomécanique [physics.med-ph]. Université de Valenciennes et du Hainaut-Cambrésis, UVHC, (France), 2004. Français. ⟨NNT : 2004VALE0024⟩. ⟨tel-03001933⟩

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