学術論文

基本情報

氏名 伊藤 雅充
氏名(カナ) イトウ マサミツ
氏名(英語) ITO Masamitsu

名称

Recruitment plasticity of neuromuscular compartments in exercised tibialis anterior using echo-planar magnetic resonance imaging in humans.

単著・共著の別

共著

発表年月

2000/12

発表雑誌又は発表学会等の名称

Neurosci Lett. 296

概要

We investigated the recruitment plasticity of the superficial tibialis anterior (TA-s) and deep tibialis anterior (TA-d) regions of neuromuscular compartments (NMCs) in the m. tibialis anterior (TA) during exercise using echo-planar imaging (EPI). Six healthy men performed dorsiflexion exercise at 60% of maximum voluntary ontraction at a frequency of 10 contractions/min inside the magnetic resonance imaging. Transaxial EPIs of the right leg were acquired every 6 s at rest (0.5 min), during exercise (2.5 min) and recovery (5 min). In TA-s, significantly higher signal intensities (SIs) were shown than those in TA-d from immediately after starting the exercise to recovery. It has been demonstrated that SI reflects the degree of recruitment in the activated muscle, thus our result suggest that preferential firing of motor neurons in the superficial region of the NMC occurs during ercise in human TA muscle.

共著者

Akima H., M.Ito, H.Yoshikawa,T.Fukunaga

掲載ページ数

p.133~p.136 共同研究につき本人担当部分抽出不可能