Esco Michael R, Williford Henry N
Human Performance Laboratory, Auburn University at Montgomery, P.O. Box 244023, Montgomery, AL 36124-4023 USA.
Springerplus. 2013 Aug 19;2:389. doi: 10.1186/2193-1801-2-389. eCollection 2013.
This investigation aimed to determine if groupings based upon sum of skinfold thickness (SF) would reflect the differences in heart rate variability (HRV) measured for up to 30-minutes following maximal exercise, and to determine the extent in variation in post-exercise HRV that could be accounted for between the following independent variables: SF, body mass index (BMI) and maximal oxygen consumption (VO2max). SF and BMI measurements were performed on fifty-four men who completed maximal exercise testing to determine VO2max. HRV was evaluated for five-minutes before (Pre), at 0-5 minutes post- (Post1) and 25-30 minutes post-exercise (Post2), and analyzed by frequency domain [high frequency (HF) power, and HF to low frequency power ratio (LF:HF)). Two groups were formed based on being above or below the sample mean value of SF. HF and LF:HF were significantly higher and lower, respectively, at Pre and Post 2 in Group 1 compared to Group 2 (p < 0.05), which remained after controlling for VO2max and BMI. Furthermore, there was a significant trend toward baseline in post-exercise HRV in Group 1 (p < 0.05) but not in Group 2 (p > 0.05). In addition, SF was the only variable to significantly relate to the post-exercise HRV parameters (p < 0.05). The findings of this investigation suggest greater SF is related to a delayed return of HRV toward baseline from maximal exercise. The association between SF and HRV is independent of VO2max and BMI.
本研究旨在确定基于皮褶厚度（SF）总和的分组是否能反映最大运动后长达30分钟所测量的心率变异性（HRV）差异，并确定以下独立变量之间可解释的运动后HRV变化程度：SF、体重指数（BMI）和最大耗氧量（VO₂max）。对54名完成最大运动测试以确定VO₂max的男性进行了SF和BMI测量。在运动前（Pre）、运动后0 - 5分钟（Post1）和运动后25 - 30分钟（Post2）对HRV进行了5分钟的评估，并通过频域分析[高频（HF）功率以及高频与低频功率比（LF:HF）]。根据SF高于或低于样本均值形成两组。与第2组相比，第1组在Pre和Post2时HF和LF:HF分别显著更高和更低（p < 0.05），在控制VO₂max和BMI后该差异仍然存在。此外，第1组运动后HRV有显著的向基线回归趋势（p < 0.05），而第2组没有（p > 0.05）。此外，SF是唯一与运动后HRV参数显著相关的变量（p < 0.05）。本研究结果表明，更大的SF与最大运动后HRV向基线的延迟恢复有关。SF与HRV之间的关联独立于VO₂max和BMI。
