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| 低氧、离心力竭运动对骨骼肌自由基代谢的影响 | |
| 引用本文： | 袁建琴,徐勇,潘同斌,王瑞元.低氧、离心力竭运动对骨骼肌自由基代谢的影响[J].武汉体育学院学报,2005,39(5):40-43. |
| 作者姓名： | 袁建琴 徐勇 潘同斌 王瑞元 |
| 作者单位： | 1. 八一军体大队,科研所,北京,100072 2. 北方工业大学,理学院,北京,100043 3. 扬州大学,体育学院,江苏,扬州,225002 4. 北京体育大学,北京,100084 |
| 摘 要： | 研究目的是探讨低氧和离心力竭运动对骨骼肌自由基代谢的影响。结果显示:离心运动后即刻骨骼肌MDA生成大量增加,运动后1天达峰值,脂质过氧化作用破坏了细胞膜,骨骼肌损伤进一步加重。安静状态下,随着低氧时间的延长,骨骼肌SOD活性明显下降。且大鼠力竭运动后低氧的前2天,骨骼肌中SOD活性的升高幅度不及常氧组。表明组织缺氧会抑制骨骼肌自由基清除剂的生成。 |
| 关 键 词： | 骨骼肌 自由肌 代谢 低氧 离心运动 大鼠 |
| 文章编号： | 1000-520X(2005)05-0040-04 |
| 修稿时间： | 2005年1月9日 |
Effects of eccentric exercise on free radical metabolism in skeletal muscles of rats under hypoxic condition |
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| YUAN Jian-qin,Xu Yong,PAN Tong-bin,et al.Effects of eccentric exercise on free radical metabolism in skeletal muscles of rats under hypoxic condition[J].Journal of Wuhan Institute of Physical Education,2005,39(5):40-43. | |
| Authors: | YUAN Jian-qin Xu Yong PAN Tong-bin |
| Institution: | YUAN Jian-qin~1,Xu Yong~2,PAN Tong-bin~3,et al |
| Abstract: | The purpose of this study was to investigate the effects of eccentric exercise on free radical metabolism in skeletal muscle under hypoxic condition. The results showed that after eccentric contraction immediately,the production of MDA increased largely and peaked after one day. As a result,the role of lipid peroxidation damaging the cell membranes and the injuries of skeletal muscles became more serious. With the increase of the length of duration when staying in the hypoxic environment,the SOD activity of the skeletal muscles decreased obviously in the sedentary control groups. On the first two days after exhaustive exercises the range of increase of SOD activity in skeletal muscles of rats under the hypoxic condition was not as much as that under the normoxic groups. It is shown that hypoxia might affect membrane permeability and inhibit the production of the clearance of free radicals in skeletal muscles. |
| Keywords: | skeletal muscles metabolism hypoxic condition eccentric exercise rats |
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