24小时睡眠剥夺对高温运动中青年男子全身热交换的影响。

IF 2.7 3区 医学 Q2 PHYSIOLOGY
European Journal of Applied Physiology Pub Date : 2025-06-01 Epub Date: 2025-01-29 DOI:10.1007/s00421-025-05705-5
Nicholas J Koetje, Nathalie V Kirby, Fergus K O'Connor, Brodie J Richards, Kristina-Marie T Janetos, Leonidas G Ioannou, Glen P Kenny
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引用次数: 0

摘要

睡眠不足与体温调节功能受损有关。然而,这些损伤是否转化为运动-热应激期间全身热交换的变化仍然未知。因此,在一个晚上的正常睡眠或24小时的睡眠剥夺之后,10名年轻男性(平均(SD): 23(3)岁)完成了三组30分钟的半卧位循环,代谢产热的固定速率增加(150,200,250 W/m2),每组在干热(40°C, ~ 13%相对湿度)中休息15分钟。连续测量全身总热交换率(干式+蒸发式)(W/m2),并以峰值响应表示[最高代谢产热时运动最后5分钟的平均值(250 W/m2)]。体热储存被量化为热量产生和损失的时间总和。连续测量以直肠温度为指标的核心温度。相对于正常睡眠,睡眠剥夺不改变全身热交换(蒸发(-6 [- 18,5]W/m2;P = 0.245),或干燥(7 [- 5,19]W/m2;p = 0.209;睡眠剥夺-正常睡眠平均差[95% ci]),因此总热损失(1 [- 14,15]W/m2;p = 0.917)。体热蓄积变化(-9 [-67,49]kJ;P = 0.732)或核心温度变化(0.1[-0.1,0.3]°C;P = 0.186)。总的来说,我们发现24小时睡眠剥夺不影响全身干热交换或蒸发热交换,导致年轻人在干热条件下运动时的全身总热交换或身体热量储存没有差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of 24-h sleep deprivation on whole-body heat exchange in young men during exercise in the heat.

Sleep deprivation has been associated with impaired thermoregulatory function. However, whether these impairments translate to changes in whole-body heat exchange during exercise-heat stress remains unknown. Therefore, following either a night of normal sleep or 24 h of sleep deprivation, 10 young men (mean (SD): 23 (3) years) completed three 30-min bouts of semi-recumbent cycling at increasing fixed rates of metabolic heat production (150, 200, 250 W/m2), each separated by a 15-min rest in dry heat (40 °C, ~ 13% relative humidity). Rates (W/m2) of whole-body total heat exchange (dry + evaporative) were measured continuously and expressed as peak responses [mean of the final 5-min of exercise at the highest metabolic heat production (250 W/m2)]. Body heat storage was quantified as the temporal summation of heat production and loss. Core temperature, indexed by rectal temperature, was measured continuously. Relative to normal sleep, sleep deprivation did not modify whole-body heat exchange (evaporative (-6 [-18, 5] W/m2; P = 0.245), or dry (7 [-5, 19] W/m2; P = 0.209; sleep deprivation-normal sleep mean difference [95%CIs]) and therefore total heat loss (1 [-14, 15] W/m2; P = 0.917). There were no differences in either the change in body heat storage (-9 [-67, 49] kJ; P = 0.732) or change in core temperature (0.1 [-0.1, 0.3] °C; P = 0.186) between conditions. Overall, we showed that 24-h sleep deprivation did not influence whole-body dry or evaporative heat exchange, resulting in no differences in total whole-body heat exchange or body heat storage in young adults during exercise under hot-dry conditions.

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来源期刊
CiteScore
6.00
自引率
6.70%
发文量
227
审稿时长
3 months
期刊介绍: The European Journal of Applied Physiology (EJAP) aims to promote mechanistic advances in human integrative and translational physiology. Physiology is viewed broadly, having overlapping context with related disciplines such as biomechanics, biochemistry, endocrinology, ergonomics, immunology, motor control, and nutrition. EJAP welcomes studies dealing with physical exercise, training and performance. Studies addressing physiological mechanisms are preferred over descriptive studies. Papers dealing with animal models or pathophysiological conditions are not excluded from consideration, but must be clearly relevant to human physiology.
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