Reliability of postexercise heart rate recovery
Reliability of postexercise heart rate recovery
复制标题
DOI：
10.1055/s-2007-965162
复制
发表时间：
2008-03-01
影响因子：
2.5
通讯作者：
Berthoin, S.
中科院分区：
文献类型：
--
作者：
Bosquet, L.;Gamelin, F. -X.;Berthoin, S.
被动运动后心率（HR）恢复目前用于耐力运动员的评估，以确定性能或临床环境的变化，作为全因死亡率的预测因素。本研究的目的是评估HR恢复的可靠性。30名健康受试者进行两次最大和两次最大跑步机运动，然后进行5分钟的被动恢复。HR信号用于计算运动停止1分钟、2分钟、3分钟和5分钟后的原始和Delta（运动-恢复）HR。使用最小二乘法将单指数函数拟合至数据。我们没有发现重复测量之间的显着偏差。与原始HR相比，A HR的相对可靠性较低（分别为0.43 < ICC < 0.71 vs. 0.68 < ICC < 0.83）。原始HR的绝对可靠性随着时间的推移相对恒定（SEM=-8%），而从第一次开始呈指数下降（SEM =与20%相似）至恢复第5分钟（SEM =类似于8%）。指数曲线拟合的参数估计值的可靠性不太一致，因为ICC（0.43 - 0.88）和SEM（5.7 - 21.4%）根据运动强度从一个参数到另一个参数不同。我们得出结论，被动运动后HR恢复的可靠性是异质的。原始HR是描述它的理想方法。
Passive postexercise heart rate (HR) recovery is currently used in the assessment of endurance athletes to determine changes in performance or in the clinical setting as a predictor of all-cause mortality. The purpose of this investigation was to assess the reliability of HR recovery. Thirty healthy subjects performed two maximal and two submaximal treadmill exercises, followed by 5 minutes of passive recovery. HR signal was used to compute raw and Delta (exercise - recovery) HR after 1, 2, 3, and 5 minutes of exercise cessation. A mono-exponential function was fitted to the data using the least squares procedure. We found no significant bias between repeated measures. Relative reliability was lower for A HR when compared with raw HR (0.43 < ICC < 0.71 vs. 0.68 < ICC < 0.83, respectively). Absolute reliability was relatively constant over time for raw HR (SEM=-8%), while it decreased exponentially from the 1st (SEM = similar to 20%) to the 5th minute of recovery (SEM = similar to 8%) for Delta HR. The reliability of parameter estimates from exponential curve fitting was less consistent, since both ICC (0.43 to 0.88) and SEM (5.7 to 21.4%) differed from one parameter to the other according to the intensity of exercise. We conclude that passive postexercise HR recovery reliability is heterogeneous. Raw HR is the desired method to describe it.