Centre for Physical Activity, Sport and Exercise Sciences, Coventry University, Coventry, UK.
School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.
Scand J Med Sci Sports. 2024 Mar;34(3):e14600. doi: 10.1111/sms.14600.
Exercise and passive heating induce some similar vascular hemodynamic, circulating blood marker, and perceptual responses. However, it remains unknown whether post exercise hot water immersion can synergise exercise derived responses and if they differ from hot water immersion alone. This study investigated the acute responses to post moderate-intensity exercise hot water immersion (EX+HWI) when compared to exercise (EX+REST) and hot water immersion (HWI+HWI) alone. Sixteen physically inactive middle-aged adults (nine males and seven females) completed a randomized cross-over counterbalanced design. Each condition consisted of two 30-min bouts separated by 10 min of rest. Cycling was set at a power output equivalent to 50% V̇o . Water temperature was controlled at 40°C up to the mid sternum with arms not submerged. Venous blood samples and artery ultrasound scans were assessed at 0 (baseline), 30 (immediately post stressor one), 70 (immediately post stressor two), and 100 min (recovery). Additional physiological and perceptual measures were assessed at 10-min intervals. Brachial and superficial femoral artery shear rates were higher after EX+HWI and HWI+HWI when compared with EX+REST (p < 0.001). Plasma nitrite was higher immediately following EX+HWI and HWI+HWI than EX+REST (p < 0.01). Serum interleukin-6 was higher immediately after EX+HWI compared to EX+REST (p = 0.046). Serum cortisol was lower at 30 min in the HWI+HWI condition in contrast to EX+REST (p = 0.026). EX+HWI and HWI+HWI were more enjoyable than EX+REST (p < 0.05). Irrespective of whether hot water immersion proceeded exercise or heating, hot water immersion enhanced vascular and blood marker responses, while also being more enjoyable than exercise alone.
运动和被动加热会引起一些相似的血管血液动力学、循环血液标志物和感知反应。然而，目前尚不清楚运动后热水浸泡是否可以协同产生运动衍生的反应，以及它们是否与单独的热水浸泡不同。本研究比较了中等强度运动后热水浸泡（EX+HWI）与运动（EX+REST）和单独热水浸泡（HWI+HWI）的急性反应。16 名身体不活跃的中年人（9 名男性和 7 名女性）完成了一项随机交叉平衡设计的研究。每个条件都包括两个 30 分钟的回合，中间间隔 10 分钟的休息。自行车设定的功率输出相当于 50%的 V̇o. 水温控制在 40°C，直到中胸骨，手臂不浸入水中。在 0 点（基线）、30 点（应激后即刻 1 点）、70 点（应激后即刻 2 点）和 100 点（恢复）时评估静脉血样本和动脉超声扫描。在 10 分钟的间隔内评估其他生理和感知测量值。与 EX+REST 相比，EX+HWI 和 HWI+HWI 后肱动脉和股浅动脉剪切率更高（p<0.001）。EX+HWI 和 HWI+HWI 后即刻血浆亚硝酸盐水平高于 EX+REST（p<0.01）。与 EX+REST 相比，EX+HWI 后即刻血清白细胞介素-6 水平更高（p=0.046）。与 EX+REST 相比，HWI+HWI 条件下的血清皮质醇在 30 分钟时更低（p=0.026）。EX+HWI 和 HWI+HWI 比 EX+REST 更愉快（p<0.05）。无论热水浸泡是在运动前还是加热前进行，热水浸泡都增强了血管和血液标志物的反应，同时比单独运动更愉快。
