State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China.
College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
J Therm Biol. 2019 Dec;86:102451. doi: 10.1016/j.jtherbio.2019.102451. Epub 2019 Nov 1.
The aim of this study was to investigate the physiological and perceptual responses of the human body wearing stab-resistant body armor (SRBA) in a hot and humid environment. The responses of five healthy male volunteers wearing SRBA were compared with those under a Control condition (wearing T-shirt) in a hot and humid environment (38 °C and relative humidity of 60%). The participants walked on a treadmill at a speed of 6 km/h for 60 min and this was followed by 60 min of recovery. The physiological responses (core temperature, skin temperature, heart rate, oxygen consumption) and perceptual parameters (thermal sensation, thermal comfort, rate of perceived exertion (RPE), and restriction to movement) were recorded throughout the tests. The results showed that the use of SRBA resulted in higher values of core temperature, mean skin temperature, heart rate, and oxygen consumption during exercise, and a significant difference (p < 0.05) between the SRBA and Control trials in terms of oxygen consumption was observed. The subjects wearing SRBA exhibited higher RPE and restriction to movement during exercise when compared with those in the Control condition, and a significant difference (p < 0.05) between the two trials in terms of restriction to movement was observed. Moreover, no significant differences (p > 0.05) in terms of thermal sensation and thermal comfort were observed between the SRBA and Control trials. It was concluded that the use of SRBA imposed high thermoregulatory and cardiovascular strain, reduced perceived exertion, and restricted movement during exercise in the hot and humid environment, whereas its effect on thermal sensation and thermal comfort was negligible when compared with those in the Control condition.
本研究旨在探讨人体在湿热环境中穿着防刺服（SRBA）时的生理和感知反应。在湿热环境（38°C，相对湿度 60%）下，将 5 名健康男性志愿者穿着 SRBA 的反应与穿着 T 恤的对照条件（Control condition）进行了比较。参与者以 6 公里/小时的速度在跑步机上行走 60 分钟，然后进行 60 分钟的恢复。记录了整个测试过程中的生理反应（核心温度、皮肤温度、心率、耗氧量）和感知参数（热感觉、热舒适、感觉用力程度（RPE）和运动受限）。结果表明，在运动过程中，使用 SRBA 会导致核心温度、平均皮肤温度、心率和耗氧量更高，并且在耗氧量方面，SRBA 和对照试验之间存在显著差异（p<0.05）。与对照条件相比，穿着 SRBA 的受试者在运动中表现出更高的 RPE 和运动受限，并且在运动受限方面，两个试验之间存在显著差异（p<0.05）。此外，在热感觉和热舒适方面，SRBA 和对照试验之间没有显著差异（p>0.05）。结论是，在湿热环境中，使用 SRBA 会对运动中的热调节和心血管系统造成高负荷，降低感知用力程度，并限制运动，但与对照条件相比，其对热感觉和热舒适的影响可以忽略不计。
