Vuillerme N, Demetz S
Laboratoire TIMC-IMAG, UMR CNRS 5525, Equipe AFIRM, Grenoble, France.
Int J Sports Med. 2007 Mar;28(3):243-6. doi: 10.1055/s-2006-924292. Epub 2006 Oct 6.
The purpose of the present experiment was to investigate the effects of wearing ankle foot orthoses (AFO) on postural control during bipedal quiet standing following a localized fatigue of the ankle muscles. To this aim, eight young healthy subjects were asked to stand upright as immobile as possible with and without AFO in two conditions of non-fatigue and fatigue of the ankle muscles. The center of foot pressure displacements (CoP) were recorded using a force platform. Larger CoP displacements in the fatigue than non-fatigue condition were observed without AFO along both the medio-lateral and antero-posterior axes. Interestingly, with AFO, these destabilizing effects were not observed along the medio-lateral axis. Altogether, the present findings suggested that the AFO allowed the subjects to limit the postural perturbation induced by a localized fatigue of the ankle muscles during bipedal quiet standing.
本实验的目的是研究在踝关节肌肉局部疲劳后，穿戴踝足矫形器（AFO）对双足安静站立时姿势控制的影响。为此，八名年轻健康受试者被要求在踝关节肌肉非疲劳和疲劳的两种情况下，分别在佩戴和不佩戴AFO的情况下尽可能静止地直立站立。使用测力平台记录足底压力中心位移（CoP）。在不佩戴AFO的情况下，沿内外侧和前后轴观察到疲劳状态下的CoP位移比非疲劳状态下更大。有趣的是，佩戴AFO时，沿内外侧轴未观察到这些不稳定效应。总之，目前的研究结果表明，AFO使受试者在双足安静站立期间能够限制由踝关节肌肉局部疲劳引起的姿势扰动。
