运动时间延长会延迟运动后心脏副交感神经而不是交感神经指数的恢复。

Longer exercise duration delays post-exercise recovery of cardiac parasympathetic but not sympathetic indices.

机构信息

Discipline of Exercise and Sports Science, Faculty of Health Sciences, The University of Sydney, C103, Cumberland Campus, PO Box 170, Lidcombe, NSW, 1825, Australia.

New South Wales Institute of Sport, Sydney Olympic Park, NSW, 2127, Australia.

出版信息

Eur J Appl Physiol. 2017 Sep;117(9):1897-1906. doi: 10.1007/s00421-017-3673-2. Epub 2017 Jul 12.

DOI:10.1007/s00421-017-3673-2

PMID:28702808

Abstract

PURPOSE

This study investigated non-invasive indices of post-exercise parasympathetic reactivation (using heart rate variability, HRV) and sympathetic withdrawal (using systolic time intervals, STI) following different exercise durations.

METHODS

13 healthy males (age 26.4 ± 4.7 years) cycled at 70% heart rate (HR) reserve for two durations-8 min (SHORT) and 32 min (LONG)-on separate occasions: HRV (including natural logarithm of root mean square of successive differences, Ln-RMSSD) and STI (including pre-ejection period, PEP) were assessed throughout 10 min seated recovery.

RESULTS

Exercise HR was similar between SHORT and LONG (146 ± 7 and 147 ± 6 b min, respectively; p = 0.173), as was HR deceleration during 10 min recovery (p = 0.199). HR remained elevated above baseline (p < 0.001) throughout recovery for both trials (SHORT 82 ± 13 b min; LONG 86 ± 10 b min, at 10 min post-exercise). Ln-RMSSD was similar at end-exercise between trials (SHORT 1.10 ± 0.30 ms; LONG 1.05 ± 0.73 ms; p = 0.656), though it recovered more rapidly following SHORT (p = 0.010), with differences apparent from 1 min (SHORT 2.29 ± 1.08 ms; LONG 1.85 ± 0.82 ms; p = 0.005) to 10 min post-exercise (SHORT 2.89 ± 0.80 ms; LONG 2.46 ± 0.70 ms; p = 0.007). Ln-RMSSD remained suppressed below baseline throughout recovery following both trials (p < 0.001). PEP was the same at end exercise for both trials (70 ± 6 ms), with exercise duration having no effect on recovery (p = 0.659). By 10 min post-exercise, PEP increased to 130 ± 21 ms (SHORT) and 131 ± 20 ms (LONG), which was similar to baseline (p ≥ 0.143).

CONCLUSIONS

Prolonged exercise duration attenuated the recovery of HRV indices of parasympathetic reactivation, but did not influence STI indices of sympathetic withdrawal. Therefore, duration must be considered when investigating post-exercise HRV. Monitoring these measures simultaneously can provide insights not revealed by underlying HR or either measure alone.

摘要

目的

本研究旨在探讨不同运动持续时间后，运动后副交感神经再激活（使用心率变异性，HRV）和交感神经抑制（使用收缩时间间隔，STI）的非侵入性指标。

方法

13 名健康男性（年龄 26.4±4.7 岁）在两个不同的时间内以 70%心率储备（HR）进行骑行：8 分钟（SHORT）和 32 分钟（LONG）-分别在不同的场合进行：在 10 分钟的坐姿恢复期间评估 HRV（包括均方根差的自然对数，Ln-RMSSD）和 STI（包括射血前期，PEP）。

结果

SHORT 和 LONG 的运动 HR 相似（分别为 146±7 和 147±6 b min；p=0.173），10 分钟恢复期的 HR 减速也相似（p=0.199）。在两次试验中，HR 在整个恢复期都保持在高于基线的水平（p<0.001）（SHORT 82±13 b min；LONG 86±10 b min，在运动后 10 分钟）。试验结束时，Ln-RMSSD 在两次试验中相似（SHORT 1.10±0.30 ms；LONG 1.05±0.73 ms；p=0.656），但SHORT 恢复得更快（p=0.010），差异从 1 分钟开始（SHORT 2.29±1.08 ms；LONG 1.85±0.82 ms；p=0.005）到运动后 10 分钟（SHORT 2.89±0.80 ms；LONG 2.46±0.70 ms；p=0.007）。在两次试验中，Ln-RMSSD 在整个恢复期都持续低于基线（p<0.001）。PEP 在两次试验结束时相同（70±6 ms），运动持续时间对恢复没有影响（p=0.659）。运动后 10 分钟，PEP 增加至 130±21 ms（SHORT）和 131±20 ms（LONG），与基线相似（p≥0.143）。