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The effects of muscle fatigue of knee muscles on balance ability in healthy adults

  • Journal of Korean Medicine Rehabilitation
  • Abbr : JKMR
  • 2018, 28(2), pp.105-111
  • DOI : 10.18325/jkmr.2018.28.2.105
  • Publisher : The Korean Academy Of Oriental Rehabilitation Medicine
  • Research Area : Medicine and Pharmacy > Korean Medicine
  • Received : March 18, 2018
  • Accepted : March 29, 2018
  • Published : April 30, 2018

lim ga rin 1 Jong Sung Chang 2

1행복한 재활요양병원 물리치료실
2영남이공대학교

Accredited

ABSTRACT

Objectives The purpose of this study was to examine the effects muscle fatigue at the knee muscles on balance during standing in healthy adults. Methods Thirty healthy adults were recruited along with their written informed consent. Subjects were randomly assigned to knee extensor group (fatigue on knee extensor, KE), and knee flexor group (fatigue on knee flexor, KF). And subjects performed exercise with each muscle group until muscle fatigue was induced. They were assessed balance ability by functional reaching test (FRT), limit of stability (LOS), and postural sway (one leg standing, normal eye open (NO), normal eye close (NC), pillow with eye open (FO), and pillow with eye close (FC)) before and after fatigue. Results There were significant group differences balance performances in FRT, anterior of limit of stability, one leg standing, and the muscle fatigue of knee muscles were decreased balance performances. The balance performance was affected by visual sense and proprioception. Conclusions These results show that the muscle fatigue of knee muscles decreased balance performance. Therefore, balance exercise program should be trained without muscle fatigue. (J Korean Med Rehabil 2018;28(2):105-111)

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