Dupuy Olivier, Mekary Saïd, Berryman Nicolas, Bherer Louis, Audiffren Michel, Bosquet Laurent
Department of Kinesiology, University of Montreal, Montreal, Qc, Canada.
Clin Physiol Funct Imaging. 2012 Jul;32(4):296-304. doi: 10.1111/j.1475-097X.2012.01125.x. Epub 2012 Feb 23.
Postexercise HRR (heart rate recovery) and HRV (heart rate variability) are commonly used to asses non-invasive cardiac autonomic regulation and more particularly reactivation parasympathetic function. Unfortunately, the reliability of postexercise HRR and HRV remains poorly quantified and is still lacking. The aim of this study was to examine absolute and relative reliability of HRR and HRV indices used to assess postexercise cardiac parasympathetic reactivation.
We studied 30 healthy men, who underwent 10-minute heart rate recording after cessation of maximal and submaximal intensity exercises. Each condition of testing was repeated twice within 5 ± 2 days after the first one. Standard indexes of HRR and HRV were computed from heart rate and RR intervals.
We found no significant bias between repeated measures. Relative reliability was assessed with the intraclass coefficient correlation (ICC) and absolute reliability with the standard error measurement (SEM) and coefficient of variation (CV). A large range for ICC was observed for both indexes of HRR and HRV (0.12 <ICC<0.87 and 0.14 <ICC<0.97, respectively). The same heterogeneity was observed for absolute reliability (5% <CV<72% for HRR parameters and 24% <CV<141% for HRV parameters).
According to our results, ∆60 (the absolute difference between heart rate immediately at the end of exercise and after 60 s) and HFnu (High Frequency expressed in normalized unit; that is, in a percentage of LF+HF) represent the most reliable parameters. In conclusion, we found that the measures used to asses cardiac parasympathetic reactivation were characterized by large random variations and their reliability remains moderate.
运动后心率恢复（HRR）和心率变异性（HRV）常用于评估非侵入性心脏自主神经调节，尤其是副交感神经功能的重新激活。遗憾的是，运动后HRR和HRV的可靠性仍未得到充分量化且仍然缺乏相关研究。本研究的目的是检验用于评估运动后心脏副交感神经重新激活的HRR和HRV指标的绝对可靠性和相对可靠性。
我们研究了30名健康男性，他们在最大强度和次最大强度运动停止后进行了10分钟的心率记录。每种测试条件在第一次测试后的5±2天内重复进行两次。HRR和HRV的标准指标通过心率和RR间期计算得出。
我们发现重复测量之间没有显著偏差。相对可靠性用组内相关系数（ICC）评估，绝对可靠性用标准误差测量（SEM）和变异系数（CV）评估。HRR和HRV的两个指标的ICC都观察到了很大的范围（分别为0.12<ICC<0.87和0.14<ICC<0.97）。绝对可靠性也观察到了相同的异质性（HRR参数的CV为5%<CV<72%，HRV参数的CV为24%<CV<141%）。
根据我们的结果，∆60（运动结束时即刻心率与60秒后心率的绝对差值）和HFnu（以标准化单位表示的高频；即LF+HF的百分比）代表最可靠的参数。总之，我们发现用于评估心脏副交感神经重新激活的测量方法具有很大的随机变化，其可靠性仍然适中。
