Article

Although previous research has studied arm swing during walking, to date, it
remains unclear what the contribution of passive dynamics versus active muscle
control to arm swing is. In this study, we measured arm swing kinematics with
3D-motion analysis. We used a musculoskeletal model in OpenSim and generated
dynamic simulations of walking with and without upper limb muscle excitations. We
then compared arm swing amplitude and relative phase during both simulations to
verify the extent to which passive dynamics contribute to arm swing. The results
confirm that passive dynamics are partly responsible for arm swing during
walking. However, without muscle activity, passive swing amplitude and relative
phase decrease significantly (both p<0.05), the latter inducing a more in-phase
swing pattern of the arms. Therefore, we conclude that muscle activity is needed
to increase arm swing amplitude and modify relative phase during human walking to
obtain an out-phase movement relative to the legs.
CI - Copyright (c) 2014 Elsevier B.V. All rights reserved.
- Balancement des bras

Langue : ANGLAIS