Forestier Nicolas, Terrier Romain, Teasdale Normand
From the Laboratoire de Physiologie de l'Exercice EA4338, Université de Savoie, France (NF, RT); CEVRES Santé, le Bourget du Lac, France (RT); Faculté de Médecine, Département de kinésiologie Université Laval, Québec, Canada (NT); and Centre d'excellence sur le vieillissement de Québec-CHUQ, Québec, Canada (NT).
Am J Phys Med Rehabil. 2015 Jan;94(1):20-7. doi: 10.1097/PHM.0000000000000137.
The purpose of this study was to test the effect of various unstable support surfaces on the relevance of muscular proprioceptive signals originating from the ankle joint.
Ten healthy subjects were instructed to stand as still as possible on a force plate during 40 secs on three different surfaces: (1) stable, (2) unstable-unspecific (foam), and (3) unstable-specific (inspired from rearfoot anatomy). Muscular vibration was applied on the paraspinals and fibularis muscles. The effects of vibrations on postural stability as well as fibularis longus and tibialis anterior electrical activities for each support condition were investigated.
The unstable-specific support surface was associated with higher fibularis muscular activity and greater postural perturbations when fibularis muscles were vibrated than the unspecific-unstable surface.
Balance control on unstable-specific support surface maintains the relevance on muscular proprioceptive signals originating from ankle and increases ankle evertor muscle activity.
本研究旨在测试各种不稳定支撑表面对源自踝关节的肌肉本体感觉信号相关性的影响。
10名健康受试者被要求在力板上尽可能静止站立40秒，分别站在三种不同表面上：（1）稳定表面，（2）非特定不稳定表面（泡沫），以及（3）特定不稳定表面（借鉴后足解剖结构）。对脊柱旁肌和腓骨肌施加肌肉振动。研究了每种支撑条件下振动对姿势稳定性以及腓骨长肌和胫骨前肌电活动的影响。
与非特定不稳定表面相比，当腓骨肌振动时，特定不稳定支撑表面与更高的腓骨肌肌肉活动及更大的姿势扰动相关。
在特定不稳定支撑表面上的平衡控制维持了源自踝关节的肌肉本体感觉信号的相关性，并增加了踝关节外翻肌的活动。
