Comparison of heat strain recovery in different anti-heat stress clothing ensembles after work to exhaustion |
| |
| Institution: | 1. Department of Building and Real Estate, Hong Kong Polytechnic University, Hong Kong, China;2. School of Engineering and Advanced Technology, Massey University, Auckland, New Zealand;1. Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760-5007, USA;2. Biophysics and Biomedical Modeling Division, US Army Research Institute of Environmental Medicine, Natick, MA 01760-5007, USA;1. Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, Pittsburgh, PA, USA;2. Department of Physical Activity and Sport Sciences, Faculty of Education and Sport, University of Deusto, Spain;3. Seoul National University, College of Human Ecology, Department of Textiles, Merchandising and Fashion Design, Seoul, South Korea;4. Kyung Hee University, College of Physical Education, Department of Sports Medicine, Yongin-si, South Korea;1. TNO, PO Box 23, 3769 ZG Soesterberg, The Netherlands;2. Taiwan Textile Research Institute, No. 6, Chengtian Rd., Tucheng Dist., New Taipei City 23674, Taiwan, ROC;3. MOVE Research Institute, Faculty of Human Movement Sciences, VU University Amsterdam, Van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands;1. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hom, Kowloon, Hong Kong;2. Honeywell China Co. Ltd., Pudong District, Shanghai 201203, China |
| |
| Abstract: | A hot environment combined with physically demanding tasks can subject workers to a higher risk of heat stress. A series of regulations and guidelines have been proposed to design appropriate anti-heat stress work uniform to reduce body heat strain. The present study aimed to examine heat strain recovery in different anti-heat stress clothing ensembles after work to exhaustion in the heat. 10 healthy males performed intermittent treadmill running/walking to exhaustion, followed by 30 min passive recovery sitting in a climatic chamber, which simulated the hot and humid outdoor environment (34 °C temperature, 60% relative humidity, 0.3 m/s air velocity, and 450 W/m2 solar radiation). The participants took part in five wear trials in counter-balanced order, including Sportswear, CIC Uniform, NEW Uniform, ICEBANK Cooling Vest, and NEW Cooling Vest, which have different levels of cooling capacity. Core temperature, skin temperature, heart rate, sweat loss, ratings of perceived exertion, and thermal sensations were measured throughout the entire heat exposure period. Physiological heat strain indices, including the physiological strain index (PhSI) and the perceptual strain index (PeSI), were used as a yardstick to quantify and compare the rate of recovery. Significantly lower physiological strain was observed in the newly developed NEW Uniform and NEW Cooling Vest groups compared with the commonly worn CIC Uniform group during recovery. At the end of the recovery period, participants in NEW Cooling Vest achieved the highest recovery (42.18% in PhSI and 81.08% in PeSI), followed by ICEBANK Cooling Vest, Sportswear, NEW Uniform, and CIC Uniform. The cooling capacity of anti-heat stress clothing ensembles and the recovery time significantly affect the rate of recovery in PhSI and PeSI, which may benefit the industry by formulating the appropriate work–rest schedule by considering the clothing effect. |
| |
| Keywords: | Anti-heat stress clothing ensembles Physiological and perceptual strain Rate of recovery |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
