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Exerc Sci > Volume 13(1); 2004 > Article
Exercise Science 2004;13(1): 43-54.
운동 강도가 림프구 아형 변화에 미치는 영향
전태원1, 박성태2
1서울대학교
2경주대학교
The Effects of Exercise Intensities on the Lymphocyte subpopulations
ABSTRACT
The Effects of Exercise Intensities on the Lymphocyte subpopulations. Exercise Science, 13(1): 43-54, 2004. The purpose of this study is to examine the effects of various exercise intensities on the change of circulating lymphocyte subpopulations. 7 healthy young males(age : 25.6±1.5, O2max: 56.0±2.7 ml/kg/min) partici -pated in four trials. At each trial., subjects ran on the treadmill at the respective intensities corresponding to 50%, 65%, 75%, 85% of O2max. Blood was obtained at rest, immediately after exercise, and at 90 min after exercise to measure lymphocyte subpopulations(CD3, CD4, CD8, CD16). Circulating lymphocyte count increased immediately after exercise(p<.01) and decreased(p<.01) in recovery 90 minutes. At most of intensities, Relative proportions of the lymphocyte and NK cell increased immediately after exercise(p<001, p<.001) and decreased below baseline level at recovery 90-min(p<.01), particularly magnitude of decrease to baseline appeared most greatly at 85% intensity. In conclusion, Immediately after exercise, suppressor T cells increased more than helper T cells, so the Th/Ts ratio significantly decreased(p<.01). These results suggest exercise at low or moderate exercise intensity as well as below 400kcal of energy expenditure to avoid the immunosuppression.
Key words: exercise intensity, lymphocyte subpopulations, NK cell, Helper T cell, suppressor T cell
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