Article

We examined whether challenging upright stance influences the execution of a
grasping task. Participants reached to grasp a small sphere while standing either
on a stable surface or on foam. Before reaching for the sphere, participants
exhibited more body sway and greater fluctuations in the centre of pressure when
standing on foam. While reaching for the sphere, the overall body posture changed
less when standing on foam than when standing on the stable surface. The digits'
and wrist's movements towards the sphere were no different when standing on foam
than when standing on the stable surface. Presumably, the redundancy in the way
movements can be performed is exploited to choose the most suitable changes in
joint angles to achieve the desired movements of the digits under the prevailing
conditions.
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Langue : ANGLAIS