心率变异阈:推测超重/肥胖青年女性通气阈的有效方法  

Heart Rate Variability Threshold: a Valid Method to Estimate Ventilatory Threshold of Overweight/Obese Young Women

作　　者：黄传业[1] 潘明玲[2] Huang Chuanye;Pan Mingling(Graduate School,Shandong Sport University,Jinan 250102,China;College of Sports and Health,Shandong Sport University,Jinan 250102,China)

机构地区：[1]山东体育学院研究生教育学院,济南250102 [2]山东体育学院运动与健康学院,济南250102

出　　处：《中国运动医学杂志》2020年第9期688-693,共6页Chinese Journal of Sports Medicine

基　　金：山东省高等学校科学技术计划项目(J17KA237);山东省高等学校人文社会科学计划项目(J18RA304);教育部人文社会科学研究青年基金项目(19YJC890020);国家体育总局科学健身指导内容项目(201714)。

摘　　要：目的:验证心率变异阈(heart rate variability,HRVT)推测超重/肥胖青年女性通气阈的有效性,为HRVT在运动科学和临床康复领域应用提供方法学依据。方法:16名无规律性体育锻炼的超重/肥胖青年女性,年龄20.8±1.2岁,身高167.1±6.0 cm,体重71.5±5.6 kg,体重指数BMI 25.8±1.4 kg/m2,体脂百分比31.3%±1.8%,摄氧量峰值VO2peak34.4±2.9 ml/kg/min,心率峰值HRpeak191.4±7.9beats/min,完成一次跑台递增负荷运动直至力竭。使用便携式Cortex气体代谢分析仪分析运动气体代谢水平,确定通气阈(VT)。Polar RS800cx心率表记录各等级运动HR和R-R间期信号,基于Time-varying分析递增负荷运动过程中HRV指标(RMSSD和SD1)时序变化特征,确定HRVT(TRMSSD和TSD1)。结果:TRMSSD和TSD1相应的心率(HR)、摄氧量(VO2)分别与VT-HR、VT-VO2无显著性差异(P>0.05)。相关分析表明,HRVT相应的HR、VO2与VT-HR、VT-VO2显著相关(r=0.700~0.960,P<0.05)。Bland-Altman散点图显示,HRVT与VT两种测试结果的95%一致性界限的置信区间较窄,均值偏差趋于零。结论:基于RMSSD、SD1判定的HRVT与VT具有较高的一致性。HRVT可能是推测超重/肥胖青年女性通气阈的有效替代方法。Objective To examine the validity of using the heart rate variability threshold(HRVT) to estimate the ventilatory threshold of overweight/obese youth women,and provide methodological references for the application of HRVT in sports science and clinical rehabilitation. Methods Sixteen overweight/obese young women(aged 20.8 ± 1.2 years,with the height of 167.1 ± 6.0 cm,weight of 71.5±5.6 kg,BMI of 25.8 ± 1.4 kg/m2,body fat percentage 31.3% ± 1.8%,peak oxygen uptake 34.4 ± 2.9 ml/kg/min and peak heart rate 191.4 ± 7.9 beats/min) without an exercise habit completed an incremental exercise protocol on a treadmill until exhaustion. During the exercise,a Cortex portable gas metabolic analyzer was used to analyze the respiratory gases and determine the variability threshold(VT). The exercise heart rate and R-R interval signals were recorded at each exercise stage using Polar RS800 cx heart rate monitor,and the HRVT(TRMSSDand TSD1) were determined using the time-variation of HRV index(RMSSD and SD1) during the incremental load exercise. Results The HR and VO2 corresponded to TRMSSDand TSD1 had no significant differences from the VT-HR and VT-VO2(P>0.05). Pearson linear analysis showed that the HR and VO2 corresponded to HRVT were significantly correlated with those of VT(r=0.700~0.960,P<0.05). Bland and Altman scatter plots revealed the 95% confidence interval of HRVT and VT assessment results was close to zero. Conclusion HRVT determined from RMSSD and SD1 has a high consistency with VT and may be a valid alternative method to estimate ventilatory threshold for overweight/obese young women.

关 键 词：心率变异阈 通气阈 副交感神经 肥胖 

分 类 号：R589.2[医药卫生—内分泌]