Effects of Treadmill Training and Detraining on Whole-body Bone Mineral Density and Body Composition in Ovariectomized RatsChinese Full Text
XU Ao;SHEN Jing;BU Shu-min;XIE Jin-zhen;HAN Tian-yu;Capital University of Physical Education and Sports;
Abstract: Objective: To investigate the effects of treadmill training and detraining on whole-body bone mineral density（WBMD） and body composition of ovariectomized rats. Methods: Sixty female SD rats were randomly divided into three groups: sham-operation group（Sham）, ovariectomized group（OVX）, ovariectomized and exercise group（EX, 18 m/min, 45 min/day, 5 uphill, 4 times/week）. After 14 weeks of regular exercise, the three groups were randomly divided into two subgroups namely: sham-16 and Sham-32, OVX-16 and OVX-32 as well as EX and DEX. At the end of regular training or 16 weeks of detraining, the WBMD and body composition were both detected by dual energy X-ray absorptiometry. Results:（1） At the end of treadmill training, both the fat mass and fat mass content in OVX-16 group were significantly higher than those in the other two groups whereas the content of lean mass, the WBMD and lumbar vertebrae BMD were significantly lower than those in the other two groups.（2） After 16 weeks of detraining, the body mass, the fat mass and the fat mass content in OVX-32 group were significantly higher than those in the Sham-32 group whereas the content of lean mass as well as the WBMD, lumbar vertebrae BMD, and left and right femur BMD were significantly lower than those in the Sham-32 group. The fat mass and the fat mass content in DEX group were significantly higher than those in OVX-32 group whereas the content of lean mass was significantly lower than that in the OVX-32 group. Conclusion: The benefit effects of treadmill training on whole-body composition and WBMD in OVX rats could not be preserved after 16 weeks of detraining.
- DOI：
10.13241/j.cnki.pmb.2014.03.004
- Series：
- Subject：
- Classification Code：
R87
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