论文部分内容阅读
目的观察运动应激对新疆维吾尔、哈萨克、柯尔克族大学生心率、血清皮质醇(Cor)、血尿素氮(BUN)和丙二醛(MDA)含量变化的影响及其与心率变化的关系,为揭示运动应激后3个少数民族大学生体质变化特征提供实验依据。方法以新疆喀什师范学院2012级非体育专业3个民族的180名维吾尔、哈萨克、柯尔克族大学生为研究对象,于空腹状态下在功率自行车上进行间歇性力竭运动实验。对比运动后即刻以及运动后1 h,24 h和48 h受试者上述指标在不同民族间的变化。结果哈萨克族和柯尔克族大学生运动应激后心率升高幅度大于维族大学生,运动后即刻、1 h和24 h民族间差异均有统计学意义(F值分别为22.03,117.02,55.15,P值均<0.05);运动后4个时间段BUN含量民族间差异有统计学意义(F值分别为29.72,8.30,11.89,20.00,P值均<0.05);运动后即刻、1 h和48 h Cor含量民族间差异有统计学意义(F值分别为123.77,55.66,10.14,P值均<0.05);运动后即刻、1 h和24 h MDA含量民族间差异有统计学意义(F值分别为31.04,54.43,30.33,P值均<0.05)。Pearson相性关分析和逐步回归分析发现,维吾尔族和柯尔克族大学生Cor变化与心率之间有线性关系(r值分别为0.832,0.939),哈萨克族大学生MDA变化与心率之间有弱线性关系(r=0.560)。结论新疆3个民族大学生运动应激反应特点和负荷承受能力不同,通过心率变化可以有效预测3个民族大学生运动应激反应程度。
Objective To observe the effects of exercise stress on the heart rate, Cor, BUN and MDA contents of Uygur, Kazak, Kirk students in Xinjiang and their relationship with heart rate, This study provides the experimental evidence for revealing the changes of physical characteristics of 3 minority college students after exercise stress. Methods A total of 180 Uyghur, Kazak and Kirk students from three ethnic groups of non-sport major in 2012 in Kashgar Teachers College of Xinjiang were used as research subjects to conduct intermittent exhaustive exercise on power bicycles under fasting condition. The changes of the above indicators among different ethnic groups were compared immediately after exercise and at 1, 24 and 48 hours after exercise. Results The heart rate of Kazakh and Kirk students increased significantly after exercise stress than that of Uygur students. There was significant difference between ethnic groups at 1 h and 24 h after exercise (F = 22.03, 117.02, 55.15, P (All P <0.05). There were significant differences in BUN content between the four groups (F value 29.72,8.30,11.89,20.00, P <0.05 respectively) There were significant differences in the content of Cor between ethnic groups (F = 123.77, 55.66, 10.14, P <0.05 respectively). There were significant differences in MDA content between the groups immediately after exercise (F values were 31.04,54.43,30.33, P <0.05). Pearson correlation analysis and stepwise regression analysis showed that there was a linear relationship between Cor changes and heart rate (r = 0.832,0.939, respectively) among Uighur and Kirk students, but there was a weak linear relationship between heart rate and changes of MDA in Kazak students (r = 0.560). Conclusion The stress response characteristics and load bearing capacity of 3 ethnic minority students in Xinjiang are different. The changes of heart rate can effectively predict the degree of stress response in 3 ethnic minority students.