PDF(Pubmed)
Abstract：
Previous studies have explored the effect of differing heat and relative humidity (RH) environments on the performance of multiple anaerobic high-intensity interval training (HIIT). Still, its impact on physiological responses and performance following aerobic HIIT has not been well studied. This study examined the effects of differing RH environments on physiological responses and performance in college football players following HIIT. Twelve college football completed HIIT under four different environmental conditions: (1) 25 °C/20% RH (Control group); (2) 35 °C/20% RH (H20 group); (3) 35 °C/40% RH (H40 group); (4) 35 °C/80% RH (H80 group). The heart rate (HR), mean arterial pressure (MAP), lactate, tympanic temperature (TT), skin temperature (TS), thermal sensation (TS), and rating of perceived exertion (RPE) were recorded continuously throughout the exercise. The heart rate variability (HRV): including root mean squared differences of the standard deviation (RMSSD)、standard deviation differences of the standard deviation (SDNN)、high frequency (HF), low frequency (LF), squat jump height (SJH), cycling time to exhaustion (TTE), and sweat rate (SR) were monitored pre-exercise and post-exercise. The HR, MAP, lactate, TT, Ts, TS, and RPE in the 4 groups showed a trend of rapid increase, then decreased gradually. There was no significant difference in HR, MAP, TT, or RPE between the 4 groups at the same time point (p > 0.05), in addition to this, when compared to the C group, the lactate, Ts, TS in the other 3 groups significant differences were observed at the corresponding time points (p < 0.05). The RMSSD, SDNN, HF, and LF levels in the 4 groups before exercise were not significantly different. The RMSSD and HF in the H40 and H80 groups were significantly decreased and other HRV indicators showed no significant difference after exercise. In sports performance measurement, the SJH and TTE were significantly decreased, but there was no significant difference in the 4 groups. The SR was no significant difference in the 4 groups after exercise. In conclusion, heat and humidity environments elicited generally greater physiological effects compared with the normal environment but did not affect sports performance in college football players.
摘要：
先前的研究已经探索了不同的热量和相对湿度（RH）环境对多次无氧高强度间歇训练（HIIT）性能的影响。尽管如此，它对有氧HIIT后的生理反应和性能的影响尚未得到很好的研究。这项研究研究了不同的RH环境对HIIT后大学橄榄球运动员的生理反应和表现的影响。十二名大学橄榄球在四种不同的环境条件下完成了HIIT：（1）25°C/20％RH（对照组）；（2）35°C/20％RH（H20组）；（3）35°C/40％RH（H40组）；（4）35°C/80％RH（H80组）。心率（HR），平均动脉压(MAP),乳酸，鼓室温度(TT),皮肤温度（TS），热感觉（TS），在整个运动过程中连续记录感知劳累（RPE）的评分。心率变异性(HRV):包括均方根标准差(RMSSD)、标准差标准差(SDNN)、高频低频（LF），下蹲跳跃高度(SJH),循环时间耗尽（TTE），运动前和运动后监测出汗率（SR）。HR,MAP,乳酸，TT,Ts,TS,4组RPE呈快速上升趋势,然后逐渐减少。HR没有显著差异，MAP,TT,或RPE4组间在同一时间点（P>0.05），除此之外，与C组相比，乳酸，Ts,其他3组的TS在相应时间点观察到显着差异（p<0.05）。RMSSD,SDNN,HF,运动前4组的LF水平无明显差异。运动后H40和H80组的RMSSD和HF明显下降，其他HRV指标无明显差异。在运动成绩测量中，SJH和TTE显著下降，但4组比较差异无统计学意义。运动后4组SR无明显差别。总之,与正常环境相比，高温和潮湿环境通常会引起更大的生理影响，但不会影响大学橄榄球运动员的运动表现。
