a Department of Exercise Science and Sport Management , Kennesaw State University , Kennesaw , GA , USA.
b Department of Exercise Science , Winston-Salem State University , Winston-Salem , NC , USA.
J Sports Sci. 2018 Aug;36(16):1872-1879. doi: 10.1080/02640414.2018.1423857. Epub 2018 Jan 8.
The evaluation of Autonomic Nervous System (ANS) recovery following exercise provides insight into the transient stress placed on the cardiovascular system. High-Intensity Functional Training (HIFT) is a form of intense exercise that is prescribed in various modalities and durations; however, little is known about the influence of HIFT duration on ANS recovery. Ten apparently healthy males (28.1 ± 5.4 yrs) performed two HIFT sessions (<5-minute and 15-minute) in a crossover fashion. ANS activity was measured using plasma Epinephrine (E) and Norepineprine (NE); Heart Rate Variability markers of the log transformed Root Mean Square of Successive Differences (lnRMSSD) and High-Frequency power (lnHF). No trial dependent differences were observed in lnRMSSD (p = 0.822), lnHF (p = 0.886), E (p = 0.078), or NE (p = 0.194). A significant main time effect was observed in both trials with a depression in lnRMSSD and lnHF following the trials (p < 0.05) and recovering by 2-hours post (p = 0.141, p > 0.999) respectively. A trial dependent increase in E and NE occurred immediately post (p < 0.05) and recovered by 1-hour post (p > 0.999, p > 0.999) respectively. The HIFT bouts examined within this study demonstrated similar transient strain of the ANS.
自主神经系统（ANS）在运动后的恢复评估可以深入了解心血管系统所承受的短暂压力。高强度功能性训练（HIFT）是一种高强度的运动形式，以各种方式和持续时间进行规定；然而，关于 HIFT 持续时间对 ANS 恢复的影响知之甚少。十名明显健康的男性（28.1±5.4 岁）以交叉方式进行了两次 HIFT 疗程（<5 分钟和 15 分钟）。使用血浆肾上腺素（E）和去甲肾上腺素（NE）测量 ANS 活动；心率变异性的对数转换连续差异均方根（lnRMSSD）和高频功率（lnHF）的标记。lnRMSSD（p=0.822）、lnHF（p=0.886）、E（p=0.078）或 NE（p=0.194）在任何试验中均未观察到依赖性差异。两个试验均观察到主要时间效应，lnRMSSD 和 lnHF 在试验后下降（p<0.05），并在 2 小时后恢复（p=0.141，p>0.999）。E 和 NE 在试验后立即增加（p<0.05），并在 1 小时后恢复（p>0.999，p>0.999）。本研究中检查的 HIFT 疗程显示出相似的 ANS 短暂紧张。
