Sukhova Z I, Shenkman B S, Nekrasov A N, Il'ina N L, Sharov V G
Morfologiia. 1994 Jul-Dec;107(7-12):75-82.
Biopsies of m. triceps surae were studied in physically active students-volunteers. Flexion of the foot sole 40 minutes in duration with 30% maximum voluntary strength was performed during 8 weeks 3-4 times a week. The frequency of the moves made 60 times per minute. In the course of morphometrical study greater attention was paid on mitochondrial parameters. Mitochondrial volume density did not change, while their number as well as the volume density of lipid inclusions tend to increase. Mitochondrial number, area and volume density of inclusions in the central zone of m. triceps surae were compared (before training: number per 100 microns2--2+3; area--0,13 +/- 0,010 microns2, volume density--2.7 +/- 0.3%, after training: number--48 +/- 4, area--0,110 +/- 0,01 microns2, volume density--2,7 +/- 0,3%) with the data available in literature on another muscles of elite sportsmen. It was concluded that high mitochondrial volume density in muscles of endurance trained sportsmen may result either from mitochondrial hypertrophy or increase of their number or from either of these factors, which is likely to be the concrete reflection of specificity of the sport efficiency.
对从事体育活动的学生志愿者的腓肠肌进行活检研究。在8周内，每周3 - 4次进行持续40分钟、强度为最大自主力量30%的足底屈曲动作。每分钟动作频率为60次。在形态计量学研究过程中，对线粒体参数给予了更多关注。线粒体体积密度没有变化，而其数量以及脂质包涵体的体积密度有增加趋势。比较了腓肠肌中央区线粒体数量、包涵体面积和体积密度（训练前：每100平方微米数量为2 + 3；面积为0.13±0.010平方微米，体积密度为2.7±0.3%，训练后：数量为48±4；面积为0.110±0.01平方微米，体积密度为2.7±0.3%）与文献中关于优秀运动员其他肌肉的现有数据。得出的结论是，耐力训练运动员肌肉中线粒体高体积密度可能是线粒体肥大、数量增加或两者共同作用的结果，这可能是运动效率特异性的具体体现。
