Measurement of fatigue in knee flexor and extensor muscles

Yasuto Kawabata, Masuo Senda, Takahiro Oka, Yukihisa Yagata, Yasuhiro Takahara, Hiroaki Nagashima, Hajime Inoue

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In order to examine fatigue of the knee flexor and extensor muscles and to investigate the characteristics of muscular fatigue in different sports, a Cybex machine was used to measure muscle fatigue and recovery during isokinetic knee flexion and extension. Eighteen baseball players, 12 soccer players and 13 marathon runners were studied. Each subject was tested in the sitting position and made to perform 50 consecutive right knee bends and stretches at maximum strength. This was done 3 times with an interval of 10 min between each series. The peak torque to body weight ratio and the fatigue rate were determined in each case. In all subjects, the peak torque to body weight ratio was higher for extensors than flexors. Over the 3 trials, the fatigue rate of extensors showed little change, while that of flexors had a tendency to increase. In each subject, knee extensors showed a high fatigue rate but a quick recovery, while knee flexors showed a low fatigue rate but a slow recovery. As the marathon runners had the smallest fatigue rates for both flexors and extensors, we concluded that marathon runners had more stamina than baseball players and soccer players.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalActa medica Okayama
Volume54
Issue number2
Publication statusPublished - Dec 1 2000

Keywords

  • Cybex machine
  • Knee flexor and extensor
  • Muscle fatigue

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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  • Cite this

    Kawabata, Y., Senda, M., Oka, T., Yagata, Y., Takahara, Y., Nagashima, H., & Inoue, H. (2000). Measurement of fatigue in knee flexor and extensor muscles. Acta medica Okayama, 54(2), 85-90.