Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

The contribution of body weight distribution and center of pressure location in the control of mediolateral stance.

Abstract : The study investigated the mediolateral control of upright stance in 16 healthy, young adults. The model analyzed the body weight distribution and center of pressure location mechanisms under three stance width conditions (feet close, under standard condition, and apart). Our first objective was to discuss some methodological requirements to investigate the contribution of both mechanisms by means of two platforms. It is proposed that both the amplitude contribution (in variability analyses) and active contribution (in cross-correlation analyses) need to be studied distinctively. These analyses may be concerned with the strength and the degree of active contributions, respectively. Based on this theoretical proposition, we expected and found that the amplitude contribution of both mechanisms was higher and lower in wide and narrow stances compared with that in the standard stance, respectively. Indeed, the closer the two reaction forces, the lower their mechanical contribution. As expected, the active contribution of both mechanisms was significantly lower and higher in wide and narrow stances, respectively. Indeed, the further the feet apart, the less active both mechanisms needed to be to control mediolateral stance. Overall, only the center of pressure location mechanism really changed its significant contribution to control mediolateral stance under the three conditions. The result is important because this mechanism is known to be secondary, weaker than the body weight distribution mechanism to control mediolateral stance. In practical terms, these findings may explain why the mediolateral variability of center of pressure displacement was significantly higher in narrow stance but not lower in wide stance.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [27 références]  Voir  Masquer  Télécharger

https://hal.univ-lille.fr/hal-02355476
Contributeur : Lilloa Université de Lille <>
Soumis le : mercredi 18 décembre 2019 - 14:31:35
Dernière modification le : mercredi 7 octobre 2020 - 21:44:01

Identifiants

Collections

Citation

Cédrick T. Bonnet, Sarah Cherraf, Sébastien Szaffarczyk, Patrice Rougier. The contribution of body weight distribution and center of pressure location in the control of mediolateral stance.. Journal of Biomechanics, Elsevier, 2014, Journal of biomechanics, 47, pp.1603-8. ⟨10.1016/j.jbiomech.2014.03.005⟩. ⟨hal-02355476⟩

Partager

Métriques

Consultations de la notice

45