內翻腳踝扭傷對腳踝內翻肌及外翻肌肌力的影響

Effects of Inversion Ankle Sprains on Muscle Strength of Ankle Evertors and Invertors

林純彬(Chun-Pin Lin)

《中華民國物理治療學會雜誌》 24卷6期 (1999/11) Pp. 420-425

https://doi.org/10.29616/JPTAROC.199911.0006

摘要

Although strengthening of ankle evertors has been suggested as an important component in inversion ankle sprain rehabilitation, muscle strength deficits after ankle sprains remain controvertial. In addition, the changes of evertor/invertor ratio after recurrent inversion sprains are not clear. The purposes of this study were to determine the effects of ankle sprains on isokinetic muscle performance of ankle invertors and evertors and to evaluate evertor/invertor ratio following ankle sprains. Eighteen college students with a history of unilateral recurrent inversion sprains were recruited as subjects. Isokinetic ankle evertion and inversion tests were performed by a Cybex 350 dynamometer at speed of 30, 60 and 120°/sec. All subjects completed the tests at speed of 30 and 60°/sec. Only eleven subjects were tested at the speed of 120°/sec. Paired-t tests were used to compare isokinetic muscle performance of injured side to uninjured side. The results revealed significantly greater evertion peak torque of injured side at 30°/sec (p＜.05). There were no significant differences between injured side and uninjured side in other isokinetic peak torque measurements. The evertor/invertor ratios of injured side at 30 and 120°/sec were significantly higher than those of uninjured side (p＜.05). No significant difference was found on evertor/invertor ratio between injured and uninjured sides at 60°/sec. The findings of this study suggest that subjects with recurrent inversion ankle sprains may develop stronger evertors to compensate residual instability following ankle sprains.

關鍵字

腳踝扭傷 ； 等速肌力測定 ； 外翻肌與內翻肌比值

並列摘要

Although strengthening of ankle evertors has been suggested as an important component in inversion ankle sprain rehabilitation, muscle strength deficits after ankle sprains remain controvertial. In addition, the changes of evertor/invertor ratio after recurrent inversion sprains are not clear. The purposes of this study were to determine the effects of ankle sprains on isokinetic muscle performance of ankle invertors and evertors and to evaluate evertor/invertor ratio following ankle sprains. Eighteen college students with a history of unilateral recurrent inversion sprains were recruited as subjects. Isokinetic ankle evertion and inversion tests were performed by a Cybex 350 dynamometer at speed of 30, 60 and 120°/sec. All subjects completed the tests at speed of 30 and 60°/sec. Only eleven subjects were tested at the speed of 120°/sec. Paired-t tests were used to compare isokinetic muscle performance of injured side to uninjured side. The results revealed significantly greater evertion peak torque of injured side at 30°/sec (p＜.05). There were no significant differences between injured side and uninjured side in other isokinetic peak torque measurements. The evertor/invertor ratios of injured side at 30 and 120°/sec were significantly higher than those of uninjured side (p＜.05). No significant difference was found on evertor/invertor ratio between injured and uninjured sides at 60°/sec. The findings of this study suggest that subjects with recurrent inversion ankle sprains may develop stronger evertors to compensate residual instability following ankle sprains.

並列關鍵字

Ankle sprain ； Isokinetic testing ； Evertor/Invertor ratio