Xi X R, Qureshi I A, Wu X D
Shanghai Medical University, P.R. China.
Chin J Physiol. 1996;39(2):105-10.
Epidemiological studies indicate that individuals with more physically demanding occupations or leisure time activities generally have a lower rate of coronary heart disease (CHD) than those that are more sedentary. Physical exercise may alleviate the risk factors of CHD. Previous literature regarding the effects of exercise upon triglycerides and cholesterol is contradictory. This study compares the effects of regular physical exercise on the concentration of plasma lipids of thirty male medical students, ages ranging between 21 and 30 years. The diet of all the subjects was nearly the same during the last four years. The subjects participated in a voluntary program of exercise for ten weeks. The differences between before and after the exercises were found to be -0.13 +/- 0.04, -0.13 +/- 0.08, 0.21 +/- 0.05, -0.10 +/- 0.04, -0.02 +/- 0.01 mmol/L of triglycerides, total cholesterol, HDL-cholesterol, LDL-cholesterol and VLDL-cholesterol (mean +/- SEM), respectively. The differences between triglycerides, HDL-cholesterol, and LDL-cholesterol were significant (p < 0.05), meanwhile, the differences between total cholesterol and VLDL-cholesterol were insignificant. The marked increase in maximal O2 uptakes after exercise training of ten weeks indicates a significant improvement in the subjects' physical fitness. Based on the results in this study, we can conclude that daily physical exercise may be an effective inhibitor for cardiovascular diseases in later life, thereby necessitating a strategy for physical activity in young adults.
流行病学研究表明，从事体力要求较高职业或有较多休闲时间活动的个体，患冠心病（CHD）的几率通常低于久坐不动的个体。体育锻炼可能会减轻冠心病的风险因素。先前有关运动对甘油三酯和胆固醇影响的文献存在矛盾之处。本研究比较了有规律的体育锻炼对30名年龄在21至30岁之间的男性医学生血浆脂质浓度的影响。在过去四年中，所有受试者的饮食几乎相同。受试者参加了为期十周的自愿锻炼计划。运动前后甘油三酯、总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇和极低密度脂蛋白胆固醇的差异分别为-0.13±0.04、-0.13±0.08、0.21±0.05、-0.10±0.04、-0.02±0.01mmol/L（平均值±标准误）。甘油三酯、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇之间的差异具有统计学意义（p<0.05），同时，总胆固醇和极低密度脂蛋白胆固醇之间的差异无统计学意义。经过十周的运动训练后，最大摄氧量显著增加，表明受试者的身体素质有显著改善。基于本研究结果，我们可以得出结论，日常体育锻炼可能是预防晚年心血管疾病的有效抑制剂，因此有必要为年轻人制定体育活动策略。
