9-11岁不同体质儿童运动靶心率的研制

Research on the Target Heart Rates of 9-11 Year-olds with Difference in Physical Quality

目的:探讨不同体质儿童运动的靶心率。方法:采用分层抽样法,选取60名9-11岁儿童,通过递增负运动试验,采用血乳酸-心率拐点发、通气阈-心率拐点和心率储备法来确定不同体质儿童运动的靶心率。结果:对不同体质的儿童用三种方法所测得靶心率,通过配对样本t检验得出:组之间靶心率无显著性差异(p>0.05);瘦弱组和普通组运动靶心率之间有显著性差异(p﹤0.05);瘦弱组儿童运动靶心率为159±12b/min、心率储备为50±2b/min;肥胖组儿童运动靶心率为164±14b/min、55±5b/min;普通组运动靶心率为165±13b/min、心率储备值为73±3b/min。结论:不同体质的儿童运动的靶心率存在差异,不同体质儿童应在自己对应的靶心率下进行运动才能有效促进其体质健康。

The objective of this program was to investigate the target heart rates of children with different physical quality. Sixty children were enrolled and undertook a grade exercise test. Their target heart rates were measured by blood lactate, ventilatory threshold--the inflection point of the heart rate and heart rate reserve. No significant difference （p 〉 0.05 ） was found among children within the same group while a significant difference （p 〈 0.05） existed between the THRs of the ＂weak＂ groupand the average group. The difference in the THRs of children with different physical quality indicates that children should exercise within their corresponding target rates to improve their health.