文章基本信息

标题：Distribution of Muscle Fiber Conduction Velocity of M. Biceps Brachii During Voluntary Isometric Contraction with Use of Surface Array Electrodes
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作者：Weiqiang Li ; Kazuyoshi Sakamoto
期刊名称：Journal of PHYSIOLOGICAL ANTHROPOLOGY and Applied Human Science
印刷版ISSN：1345-3475
出版年度：1996
卷号：15
期号：1
页码：41-53
DOI：10.2114/jpa.15.41
出版社：Japan Society of Physiological Anthropology
摘要：Surface electromyogram (EMG) was recorded in m. biceps brachii during the contractions of 20, 40 and 60% of maximum voluntary isometric contraction (MVC) in twelve healthy male subjects, using surface array electrodes. The distribution of muscle fiber conduction velocity (MFCV) was found directly using the averaging technique and the cross-correlation function technique. MFCVs in the region of 20-45 mm measured from end-plate denoted constant value of about 4 m/s in 20% MVC, while MFCVs in the region around end-plate and tendons showed about 10 m/s in 20% MVC. The values of MFCV depended on the contraction levels of muscle. The model for the generation of MFCV which considered the ensemble of muscle fibers with the shape of a cone was proposed. The theoretical values of MFCV by the muscle fiber ensemble model (MFE model) proposed in the paper showed in good agreement with the experimental results.
关键词：muscle fiber conduction velocity;voluntary isometric contraction;m. biceps brachii;surface array electrodes;muscle fiber ensemble model