Muscle timing in injured and non-injured leg of athletes with chronic ankle instability in response to a visual stimulus during forward jumping

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• 作者：Sara Fereydounnia ; PT^a ; ^{s-fereydounnia@razi.tums.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Azadeh Shadmehr ; PhD ; PT^a ; ^{shadmehr@tums.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Saeed Talebian Moghadam ; PhD ; PT^a ; ^{talebian@sina.tums.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Gholamreza Olyaei ; PhD ; PT^a ; ^{olyaeigh@sina.tums.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Shohreh Jalaie ; PhD ; Biostatistics^a ; ^{jalaeish@sina.tums.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Ali Tahmasebi ; OT^b ; ^{a-tahmasebi@razi.tums.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Chronic ankle instability ; Motor control strategies ; Visual stimulus ; Forward jump
• 刊名：Journal of Bodywork and Movement Therapies
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：20
• 期：1
• 页码：3-9
• 全文大小：628 K

文摘

The aim of this study was to investigate premotor time, motor time and reaction time of the injured and non-injured leg muscles of athletes with chronic ankle instability in response to a visual stimulus during forward jumping.

Methods

Surface electromyography was performed on injured and non-injured leg of eight athletes with chronic ankle instability during forward jumping.

Results

Results showed that premotor time of the peroneus longus was significantly longer in non-injured leg compared with injured leg (489.37 ± 220.22 ms vs. 306.46 ± 142.92 ms, P = 0.031); on the contrary, motor time of the peroneus longus was significantly shorter in non-injured leg compared with injured leg (569.04 ± 318.62 ms vs. 715.12 ± 328.72 ms, P = 0.022). No significant difference was noted in the timing of other calf muscles (P > 0.05).

Conclusion

According to the results of this study, rehabilitation protocols, regarding ankle instability, need to put greater emphasis on tasks that require proper timing of muscles and muscle re-education so that protocols could reduce residual symptoms after sprain and prevent recurrent sprains.