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운동강도의 차이가 Sprague-Dawley 계 흰쥐 심장조직의 지질과산화와 항산화 체계에 미치는 영향
윤진환(Jin Hwan Yoon),박해진(Hae Jin Park),이회혁(Hui Hyuk Lee),임은미(Eun Mi Im),지용석(Young Suk Ji) 한국사회체육학회 2002 한국사회체육학회지 Vol.17 No.-
The purpose of this study was carried to investigate the effects of comparative exercise intensity on lipid peroxidation and antioxidant enzyme activities of heart in rats. Thirty male Sprague-Dawley rats(5 weeks old) were randomly assigned into three groups: the control group, the high intensity exercise group, the low intensity exercise group. 10 rats were trained by high intensity exercise and 10 rats were trained in low intensity exercise for 8 weeks, but 10 rats were not exercised at all. High intensity exercise animals were trained 5 days per weeks, for 8 weeks, running to gradual exercise by increased times and speeds in rat treadmill. Low intensity exercise animals were trained 5 days per weeks, for 8 weeks, running for 10 min at 20m/minute, 0% grade. Following 8 weeks the rats were analyzed the changes of SOD (superoxide dismutase) activity, CAT(catalase) activity, MDA(malon dialdehyde) concentration. Statistical techniques for data analysis were two way repeated measure ANOVA to determine the differences among the groups. The 5% level of significance was used as the critical level for acceptance of hypotheses for the study. The analysis of data revealed the following findings. 1. There weren`t any significant in the MDA among three groups following 8 weeks training, but reversely lower high intensity exercise groups. 2. In the SOD, there weren`t any significant differences among three groups following 8 weeks training, but significantly higher in low intensity exercise groups. 3. In the CAT, there weren`t any significant differences among three groups following 8 weeks training, but higher in all groups As result of this conclusion, the present study shows that the change of MDA, SOD, CAT have resulted variable responses in heart tissue after 8 weeks trained by exercise intensity.
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