Influence of Unilateral Muscle Fatigue in Knee and Ankle Joint on Balance and Gait in Healthy Adults.
10.18857/jkpt.2017.29.1.39
- Author:
Na Kyung LEE
1
;
Young Mi KIM
;
Kyoung KIM
Author Information
1. Department of Physical Therapy, Graduate School, Daegu University, Daegu, Korea. ymk616@hanmail.net
- Publication Type:Original Article
- Keywords:
Unilateral muscle fatigue;
Balance;
Gait
- MeSH:
Adult*;
Ankle Joint*;
Ankle*;
Electromyography;
Exercise;
Fatigue;
Gait*;
Humans;
Knee Joint;
Knee*;
Leg;
Lower Extremity;
Muscle Fatigue*;
Sports
- From:
Journal of Korean Physical Therapy
2017;29(1):39-43
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: This study was to investigate the effects of unilateral muscle fatigue in knee and ankle joints on balance and gait in healthy adults. METHODS: Exercise inducing muscle fatigue in the knee joint consisted of concentric and eccentric contraction of dominant knee extensors in healthy adults by using the Leg Extension Rehap exercise machine (HUR, Finland). Exercise inducing muscle fatigue in the ankle joint was composed of voluntary contractions and forced contractions of the dominant plantar flexors in healthy adults. Exercises to induce muscle fatigue in the knee and ankle joints were performed until the subject complained of fatigue or pain, the occurrence of muscle fatigue was confirmed by electromyography. We measured static and dynamic balance using the Good Balance system and gait performance by RS-scan. RESULTS: Static and dynamic balance ability and spatial-temporal gait decreased significantly after muscle fatigue in knee and ankle joint. CONCLUSION: These results show that unilateral muscle fatigue of the lower extremities affected postural control and gait. Therefore, therapists and sport trainers should minimize the risks of fall and injuries related to unilateral muscle fatigue.
