Lindenberg Kelly M, Carcia Christopher R
Department of Physical Therapy, Rangos School of Health Sciences, Duquesne University, Pittsburgh, PA 15282, USA.
J Electromyogr Kinesiol. 2009 Oct;19(5):e329-33. doi: 10.1016/j.jelekin.2008.06.004. Epub 2008 Jul 24.
The purpose of this study was to compare the muscle response times (MRTs) of select lower extremity muscles following a weight bearing rotary perturbation in single-leg stance with and without shoes. Ten recreationally active females volunteered for this study. Each subject received a rotary perturbation in single-leg stance under two conditions: with shoes and without shoes. The outcomes measured were response times of the medial and lateral quadriceps, hamstrings and gastrocnemius. The results demonstrated that significant differences in MRTs were not apparent for either the medial or lateral perturbation between conditions. While a main effect for muscle was evident for both medial and lateral perturbations, a muscle by shoe interaction was not present for either the medial or lateral perturbation. Our findings suggest that wearing shoes does not alter MRTs during single-limb rotary perturbations. These data indicate that lower extremity perturbation device testing may be done with or without shoes and comparisons between works are permissible as response times are unaffected.
本研究的目的是比较在单腿站立时进行负重旋转扰动时，有鞋和无鞋情况下选定下肢肌肉的肌肉反应时间（MRTs）。十名有运动习惯的女性自愿参与本研究。每位受试者在两种条件下进行单腿站立旋转扰动：有鞋和无鞋。测量的结果是股内侧肌、股外侧肌、腘绳肌和腓肠肌的反应时间。结果表明，两种条件下内侧或外侧扰动的MRTs均无明显差异。虽然内侧和外侧扰动的肌肉主效应均明显，但内侧或外侧扰动均不存在肌肉与鞋子的交互作用。我们的研究结果表明，在单肢旋转扰动期间穿鞋不会改变MRTs。这些数据表明，下肢扰动装置测试可以在有鞋或无鞋的情况下进行，并且由于反应时间不受影响，因此不同研究之间的比较是可行的。
