Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/66115
Title: Effectiveness of a newly designed construction uniform for heat strain attenuation in a hot and humid environment
Authors: Yi, W
Chan, AP
Wong, FKW
Wong, delP
Keywords: Construction uniform
Heat strain
Moisture management textile
Issue Date: 2017
Publisher: Pergamon Press
Source: Applied ergonomics, 2017, v. 58, p. 555-565 How to cite?
Journal: Applied ergonomics 
Abstract: This study aims to evaluate the effectiveness of a newly designed construction uniform in combating heat stress. Ten male volunteers performed treadmill running in a climatic chamber maintained at 34.5 °C temperature, 75% relative humidity, 0.3 m/s air velocity, and solar radiation of 450 W/m(2) that simulates typical summer working environment of construction sites in Hong Kong. The participants were tested while wearing two kinds of construction uniforms: a commonly worn uniform A, or a newly designed uniform B. It was found during exercise that Tc (38.34 ± 0.14 vs 38.45 ± 0.11 °C, p = 0.03), Tsk (36.01 ± 0.36 vs 36.27 ± 0.34 °C, p = 0.03), HR (162.7 ± 10.1 vs 172.5 ± 9.2 bpm, p < 0.01), PSI (7.0 ± 0.4 vs 7.5 ± 0.5, p = 0.04), thermal sensation (1.7 ± 0.9 vs 2.6 ± 0.7, p = 0.02), and wetness sensation (1.9 ± 0.9 vs 2.6 ± 0.8, p < 0.01) was lower when wearing uniform B than that of uniform A. It was found during recovery that Tc (37.89 ± 0.13 vs 38.06 ± 0.13 °C, p < 0.01), Tsk (35.68 ± 0.37 vs 36.02 ± 0.41 °C, p < 0.01), HR (104.2 ± 10.1 vs 112.6 ± 10.7 bpm, p < 0.01), PSI (3.3 ± 0.7 vs 4.1 ± 1.0, p < 0.01), thermal sensation (0.1 ± 0.9 vs 1.0 ± 0.8, p = 0.02), and wetness sensation (1.1 ± 1.0 vs 2.3 ± 0.8, p = 0.02) was lower when wearing uniform B than that of uniform A. The findings of this study suggested the newly designed construction uniform could reduce thermoregulatory and cardiovascular strain, and improve thermal comfort while exercising in a hot and humid environment.
URI: http://hdl.handle.net/10397/66115
ISSN: 0003-6870
EISSN: 1872-9126
DOI: 10.1016/j.apergo.2016.04.011
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