Changes of rat respiratory and locomotory muscles during aerobic exercise training in continuous and interval regimens

被引：4

作者：

Borzykh A.A. ^{[1
]}

Kuzmin I.V. ^{[1
,2
]}

Mart'ianov A.A. ^{[2
]}

Borovik A.S. ^{[1
]}

Sharova A.P. ^{[1
]}

Tarasova O.S. ^{[1
,2
]}

Vinogradova O.L. ^{[1
]}

机构：

[1] Institute for Biomedical Problems, Russian Academy of Sciences, Moscow

[2] Biological Faculty, Moscow State University, Moscow

来源：

Biophysics | 2012年 / 57卷 / 5期

基金：

俄罗斯基础研究基金会;

关键词：

citrate synthase; diaphragm; gastrocnemius muscle; myosin phenotype; testosterone;

D O I：

10.1134/S0006350912050053

中图分类号：

学科分类号：

摘要：

Male Wistar rats were treadmill-trained for 8 weeks using one of the two regimens: with the constant running speed or with alternating high-speed and low-speed intervals. Both training regimens led to an increase of rat aerobic capacities and to a higher citrate synthase activity in the medial head of gastrocnemius muscle. No differences between the effects of two training regimens were observed. However, in contrast to constant-speed training the interval one resulted in myocardium hypertrophy and also in less pronounced changes in diaphragm muscle, such as slow-direction shift of myosin phenotype and reduction of muscle fiber cross-sectional area. Neither of the training regimens had an effect on corticosterone and thyroid hormones levels in rat blood, whereas the interval training resulted in a higher level of testosterone. Anabolic influence of testosterone during interval aerobic training may be favorable for heart hemodynamic capacity and force characteristics of the diaphragm. © 2012 Pleiades Publishing, Ltd.

引用

页码：684 / 689

页数：5

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