|
PDF (336.2 KB) HTML
S. Vernazza-Martin1 , V. Tricon1, N. Martin2, S. Mesure3, J. P. Azulay4 and A. Le Pellec-Muller1
|
(1)
|
Laboratoire Sport et Culture EA2931, UFR STAPS Paris X Nanterre, Bât S, 200 avenue de la République, 92001 Nanterre, France
|
|
(2)
|
Locéan UMR 7617, Université Pierre et Marie Curie, Tour 15, Boîte 100, 4 place Jussieu, 75252 Paris Cedex 05, France
|
|
(3)
|
Laboratoire Mouvement et Perception P2M, Faculté des Sciences du Mouvement de Lumigny, 163 av. de Lumigny, CP 910, 13288 Marseille Cedex 9, France
|
|
(4)
|
Laboratoire INPC, CNRS, 31 Chemin Joseph Aiguier, BP 71, 13402 Marseille, France
|
Received: 26 May 2007 Accepted: 29 January 2008 Published online: 18 March 2008
Abstract This investigation studies the effect of aging on the coordination between equilibrium and trunk movement. Eight young adults and seven adults at the end of middle age bent their trunk forward and stabilized their position. The center of mass shift was studied as an indicator of equilibrium control as was the electromyographic pattern of the main muscles involved in the movement. The kinematic strategy responsible for both the movement and equilibrium control was quantified by performing a principal components analysis on the hip, knee, ankle angle changes occurring during the movement. We observed that the effect of aging can be detected early. It is not expressed as a deterioration of equilibrium control but rather as “over control”. The kinematic strategy is modified, the central command adapted. These results could express the onset of a lesser ability to simplify the coordination between equilibrium and movement as young adults leading to its deterioration in the elderly.
Keywords Aging - Equilibrium control - Movement - Strategy - Central command - Adaptation
References secured to subscribers.
|
more options
Find
|
Within all content
|
|
Within this journal
|
|
Within this issue
|
Export this article
|