The Effect of Sudden Inversion Stress on EMG Activity of the Peroneal and Tibialis Anterior Muscles in the Chronically Unstable Ankle

• DOI: 10.2519/jospt.1997.26.2.73
• Publication Date: 2013-08-30T05:27:23Z
• Authors: Melissa Ebig; Scott M. Lephart; Ray C. Burdett; Mark C. Miller; Danny M. Pincivero
• Keywords: Tibialis anterior muscle; Plantar flexion; Peroneus longus

Residual symptoms resulting from recurrent episodes of inversion-type ankle sprains may be attributed to a decreased neuromuscular response the peroneal or tibialis anterior muscles, thereby increasing probability for reinjury. The purpose this study was examine electromyographic (EMG) time and muscles in sudden plantar flexion/inversion stress chronically functional unstable normal ankle. Subjects consisted 13 athletically active individuals (five males eight females, mean age = 19.2 +/- 1.51 years) with previous history unilateral sprain. A specially designed platform that allows each foot drop into standing neutral position used. Reaction milliseconds measured via surface EMG. paired t test performed Bonferroni-Dunn correction factor determine differences between as well contralateral results indicated no significant stable ankles muscles. also existed either ankles. findings present suggest self-reported instability not result diminished reflex stress.