3-DIMENSIONAL JOINT MOMENTS ANALYSIS IN A VERTICAL QUADRUPEDAL POSTURE ASSOCIATED WITH A LEG RELEASE

Citation
F. Quaine et al., 3-DIMENSIONAL JOINT MOMENTS ANALYSIS IN A VERTICAL QUADRUPEDAL POSTURE ASSOCIATED WITH A LEG RELEASE, Archives of physiology and biochemistry, 105(2), 1997, pp. 136-143
Citations number
20
Categorie Soggetti
Physiology,Biology,Biophysics
ISSN journal
13813455
Volume
105
Issue
2
Year of publication
1997
Pages
136 - 143
Database
ISI
SICI code
1381-3455(1997)105:2<136:3JMAIA>2.0.ZU;2-U
Abstract
This study reports on rock climbers biomechanical adjustments followin g a leg release from a quadrupedal vertical initial stance. Six climbe rs of international level have been studied. They were asked to mainta in a quadrupedal posture on artificial holds equipped with strain gaug es and then to release their right foot. The results show that all the rock climbers adjust differently the vertical forces and the horizont al forces on the holds. They distribute the vertical forces over the t hree remaining holds and the horizontal forces over the controlateral holds. A quasi-static three-dimensional multi-segment model was used t o produce the net reaction forces and joint moments at each joint. Mom ent results enhance the role of the controlateral limbs, particularly the left leg. The gravity seems to be counteracted at the left knee jo int, while body balance seems to be managed at the left hip and ankle joints.