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Exercise Science 2004;13(4): 413-422. |
| 최대하 운동의 강도에 따른 혈중 지질 과산화와 항산화 효소 활성의 변화 |
| 전태원1, 이동기1, 강현주1, 박성태2, 김은경1, 엄우섭3, 전병환4, 박익렬1 |
1서울대학교
2경주대학교
3서울교육대학교
4아산생명과학연구소 |
| The effect of submaximal exercises with different intensities on the blood lipid peroxidation and antioxidant enzymes activities. |
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| ABSTRACT |
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The effect of submaximal exercises with different intensities on the blood lipid peroxidation and antioxidant enzymes activities. Exercise Science, 13(4): 413-422, 2004. The purpose of this study is to examine the effects of various exercise intensities on the change of lipid peroxidation and antioxidant enzymes activities. 7 healthy young males(age : 25.6±1.5, O2max: 56.0±2.7 ml/kg/min) participated in four trials. At each trial., subjects ran on the treadmill at the respective intensities corresponding to 50%, 65%, 75% and 85% of O2max. They exercised for different duration so that energy expenditure(400kcal) was equal to all subjects. The order of the trials was randomized and separated by one week. Blood was obtained at rest, immediately after exercise, and at 90 min after exercise to measure the serum malondialdehyde(MDA) level, erythrocyte glutathione peroxidase(GPx) and superoxide dismutase(SOD) activities. serum MDA level was increased significantly immediately after exercise(p<.05) and recovered at 90 min after exercise(p<.01). Erythrocyte SOD activity decreased immediately after exercise in comparison to baseline(p<.05) and increased just a little at 90min after exercise but appeared lower activity than at rest(p<.05). Erythrocyte GPx activity did not significantly change throughout every time. Therefore, The results of this study suggest that submaximal exercise, which expend on 400kcal, induced the oxidative stress of the blood independent of exercise intensity but recovered into rest level within 90 minutes. And the exercise of this type does not stimulate activity of erythrocyte antioxidant enzymes |
| Key words:
submaximal exercise, exercise intensity, lipid peroxide, antioxidant enzyme |
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