Abstract

Objective: The present study sought to expand upon prior investigations of the relationship between the post-exercise heart rate recovery (HRR) and the cardiac autonomic responsiveness after orthostatic stress test.

Method: HRR at the 1st, 3rd, and 5th min after maximal exercise test were correlated with relative change (Δ%) of time-domain (CV, pNN50, and rMSSD) and frequency-domain (TP, LF, HF, and LF/HF ratio) indices of heart rate variability (HRV) after active orthostatic test in 46 healthy men. Statistical analysis employed non-parametric tests with a p-value set at 5%.

Results: HRR at 1st min correlated with Δ%pNN50 (r_s:0.36 – p = .02). In the 3rd and 5th min, these measures correlated with Δ%pNN50, Δ%rMSSD, Δ%CV, Δ%TP, and Δ%HF indices (r_s:0.33, 0.59 – p ≤ .05). Coefficient of HRR at the 1st min correlated with Δ%pNN50, Δ%rMSSD, and Δ%HF (r_s:0.28, 0.45 – p ≤ .05). The 3rd and 5th min showed correlation with Δ%pNN50, Δ%rMSSD, Δ%HF, Δ%CV, and Δ%TP (r_s:0.37, 0.64 – p ≤ .05). No correlation was found with indices combined sympathetic-parasympathetic modulation and HRR. After the sample was divided into high and low parasympathetic responsiveness subgroups after the orthostatic test, faster HRR was associated with the degree of parasympathetic responsiveness (reduction) following postural change (p ≤ .05).

Conclusion: HRR throughout the 1st to 5th min is positively correlated with parasympathetic responsiveness and overall cardiac autonomic modulation of HRV after the orthostatic stress test, and faster HRR is positively correlated with the relative degree of parasympathetic responsiveness after the active postural change at rest in healthy men.

摘要

目的：本研究试图扩展先前对运动后心率恢复 (HRR) 与直立性压力测试后心脏自主神经反应性之间关系的调查。

方法：最大运动测试后第 1、3 和 5 分钟的 HRR 与时域（CV、pNN50 和 rMSSD）和频域（TP、LF、HF 和 LF）的相对变化 ( Δ %)相关/HF 比率) 46 名健康男性主动直立试验后心率变异性 (HRV) 的指数。统计分析采用非参数检验，p 值设置为 5%。

结果：第 1 分钟的 HRR 与Δ %pNN50相关（r _s :0.36 – p  = .02）。在第三和第五分钟，这些措施相关Δ％PNN50，Δ％RMSSD，Δ％CV，Δ％TP，并且Δ％HF指数（R_小号：0.33，0.59 - p  ≤0.05）。HRR的系数在与相关联的第一最小Δ％PNN50，Δ％RMSSD，和Δ％HF（R_小号：0.28，0.45 - p  ≤0.05）。第 3 分钟和第 5 分钟显示与Δ %pNN50、Δ % rMSSD 、Δ%HF、Δ %CV 和Δ %TP（r _s :0.37、0.64 – p  ≤ .05）。未发现与交感神经-副交感神经调制和 HRR 组合的指数相关。在直立试验后将样本分为高副交感神经反应性亚组和低副交感神经反应性亚组后，更快的 HRR 与姿势改变后副交感神经反应性（降低）的程度相关 ( p  ≤ .05)。

结论： 1-5分钟的HRR与直立性压力试验后HRV的副交感神经反应性和整体心脏自主神经调节呈正相关，健康人休息时较快的HRR与主动姿势改变后副交感神经反应性的相对程度呈正相关。男人。