2013年8月
Region-specific myoelectric manifestations of fatigue in human rectus femoris muscle
MUSCLE & NERVE
- ,
- ,
- 巻
- 48
- 号
- 2
- 開始ページ
- 226
- 終了ページ
- 234
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/mus.23739
- 出版者・発行元
- WILEY-BLACKWELL
Introduction: Anatomical properties between proximal and other regions within the human rectus femoris (RF) muscle are nonuniform. We aimed to clarify the possible region-specific myoelectric manifestations of fatigue within the RF muscle by using an advanced surface electromyography (SEMG) technique. Methods: Nine healthy men performed sustained contractions at 50% of maximal voluntary contraction until exhaustion during isometric knee extension and hip flexion. During these contractions, multi-channel SEMG was recorded from the RF by using 46 electrode pairs which cover most of the superficial area of the muscle. Results: Fatigue-induced SEMG, i.e., an increase in root mean square and a decrease in median frequency, was not uniform within the muscle during both tasks and was greater in proximal regions. Conclusions: Our findings suggest that myoelectric manifestations of fatigue within the human RF muscle are localized, and proximal regions are more fatigable than other regions within this muscle.
- リンク情報
- ID情報
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- DOI : 10.1002/mus.23739
- ISSN : 0148-639X
- Web of Science ID : WOS:000322158500010