心脏定量负荷试验对不同人群中老年女性心率变异性的影响

目的:为了探索中老年女性在定量负荷运动中心率变异性各指标的变化特点以及健身气功锻炼对中老年女性心率变异性的影响,为探索科学定量锻炼提供理论基础。方法:将1356名健康中老年女性分为气功组和对照组,通过在体育科研人员的指导下进行定量的体育运动前、后检测HRV各项指标的变化,分析两组受试者在心脏定量负荷试验各个阶段心率变异性的变化特点。结果:对照组在规范负荷运动后HF先下降后上升(P>0.05);SD1、SD2值迅速升高(P<0.01);在规范负荷运动的前、中、后阶段LF和RMSSD值缓慢回落(P>0.05);气功组在规范负荷运动后LF值较快地回落(P<0.05);RMSSD在规范负荷运动后下降非常显著(P<0.01);HF值在运动后快速下降(P<0.05),但仍旧高于对照组,说明气功组受试者在规范负荷运动停止后的迷走神经系统张力和交感神经系统的兴奋性均可能降低。结论:1)南昌市中老年女性心率变异性实验结果总体指标符合一般健康中老年人的心率变异性特点;2)健身气功组自主神经功能的调节作用在运动前与运动中调节功能水平比普通人群组高;3)气功组SD1、SD2、RMSSD值与先前的研究不同。

Influence of Heart Quantitative Load Experiment on Variability of Heart Rate in Middle and Aged Women from Different Kinds of Crowd

Objective:To detect the changes of each index of heart rate variability (HRV)in middle and aged women before and after regular and quantitative exercises so as to provide theoretical basis for the further exploration of relationship between HRV and scientific exercise.Method:1,356 healthy middle-aged women were divided into two groups,the qigong groups and the control groups by researchers and testing the changes in HRV before and after exercise,which guided by the staff,then testing and analyzing the character of HRV at each stage of the quantified loading test between two groups.Result:HF first decline after rising slowly (P> 0.05),the value of SD1,SD2 increase rapidly (P<0.01) after exercise in the control group;the value of LF and RMSSD decline slowly (P> 0.05) in all stages of the exercises,LF (P<0.05) fall rapidly after exercise in qigong groups;comparing with control group,RMSSD significant decline (P<0.01),HF value rapid decline (P<0.05) but still higher after exercise.It is suggested that both the tension of sympathetic nerves system and parasympathetic neurons are decline after exercise in qigong group.Conclusions:1)The HRV values of the middle and aged women in Nanchang accord with the characteristic of middle and aged healthy people.2)The regulation function of Qigong group is better than the control group before and during the exercise.3)The values of SD1,SD2,and RMSSD in Qigong group are different with the previous research.