Comparison of the histochemical and contractile properties of human gastrocnemius muscle.
Comparison of the histochemical and contractile properties of human gastrocnemius muscle.
复制标题
人腓肠肌的组织化学和收缩特性的比较。
DOI：
10.2519/jospt.1991.13.6.322
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发表时间：
1991
影响因子：
6.1
通讯作者：
C. L. Moss
中科院分区：
文献类型：
--
作者：
C. L. Moss
对 21 名 20 至 29 岁男性运动员的人类腓肠肌的收缩和组织化学特性进行了比较。使用表面电刺激来确定肌肉抽搐参数。肌肉抽搐的收缩变量为：潜伏期（L）、达到峰值力的时间（TPF1和TPF2）、峰值力（Pf1和Pf2）、半收缩时间（1/2 CT）和半松弛时间（1/2 RT）。使用针活检技术获得腓肠肌内侧肌腹部的肌肉样本。对样品进行肌球蛋白 ATP 酶组织化学处理，以便将纤维分类为慢肌纤维 (ST) 或快肌纤维 (FT) 并确定纤维面积。在收缩变量和组织化学变量之间进行多重相关性。结果表明，计算的抽搐记录与 FT 纤维百分比 (R = 0.85)、ST 纤维百分比 (R = 0.85)、FT 纤维相对百分比面积 (R = 0.84) 和 ST 纤维相对百分比面积 (R = 0.84) 之间存在显着 (p < 0.05) 正相关关系。结果表明，使用肌球蛋白 ATP 酶测定的纤维类型百分比和相对面积百分比与电刺激的等长收缩特性相关。 J Orthop Sports Phys Ther 1991；13(6):322-328。
Contractile and histochemical properties of the human gastrocnemius muscle were compared in 21 male athletes ranging from 20 to 29 years of age. Surface electrical stimulation was used to determine muscle twitch parameters. The contractile variables of the muscle twitch were: latency (L), time to peak force (TPF1 and TPF2), peak force (Pf1 and Pf2), half-contraction time (1/2 CT), and half-relaxation time (1/2 RT). Muscle samples from the belly of the medial gastrocnemius muscle were obtained using the needle biopsy technique. The samples were treated histochemically for myosin ATPase in order to classify the fibers as slow twitch (ST) or fast twitch (FT) and to determine fiber areas. Multiple correlations were performed between the contractile and histochemical variables. The results demonstrated significant (p < 0.05) positive relationships between the calculated twitch recordings and percentage of FT fibers (R = 0.85), percentage of ST fibers (R = 0.85), relative percent area of FT fibers (R = 0.84), and relative percent area of ST fibers (R = 0.84). The results suggest that fiber type percentage and relative percent area determined using myosin ATPase are related to electrically stimulated isometric contractile properties. J Orthop Sports Phys Ther 1991;13(6):322-328.