Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles

S. Yamamoto, T. Kumagai, H. Obata, H. Koyama, T. Komeda, K. Nakazawa

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

This study examined the effect of different joint angle on the sensitivity of short- and long-latency stretch reflex responses in ankle flexor and ankle extensor muscles. The B-mode echo image of each muscle in individual subject was used to estimate the change of muscle fiber length. The stretch reflex sensitivity of short- and long-latency components was evaluated by the multiple linear regression analysis with two independent variables, muscle fiber stretching velocity (MSV) and background EMG activity (BGA). The reflex sensitivity of short-latency component (M1) in soleus (SOL) muscle is dependent on the ankle joint angle and initial muscle fiber length. However, the reflex sensitivity of short- and long-latency components (M1 and M2) in gastrocnemius (GAS) muscle is not always dependent on initial muscle fiber length. Moreover, the reflex sensitivity of Ml in SOL is dependent on knee joint angle. On the other hand, in all conditions the reflex sensitivity of ankle flexor muscle: tibialis anterior (TA) was significantly lower than that of ankle extensor muscles. These results indicated that the joint angle dependency of the standardized sensitivity of short- and long-latency stretch reflex responses was different in different muscles.

本文言語English
ページ(範囲)1483-1486
ページ数4
ジャーナルAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
2
出版ステータスPublished - 2003 12 1
イベントA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
継続期間: 2003 9 172003 9 21

ASJC Scopus subject areas

  • 信号処理
  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 健康情報学

フィンガープリント

「Effect of Different Joint Angle on Stretch Reflex Sensitivity in Lower Leg Muscles」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル