Effectiveness of a newly designed construction uniform for heat strain attenuation in a hot and humid environment

Wen Yi, Ping Chuen Chan, Francis K.W. Wong, Del P. Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

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/m2that 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.
Original languageEnglish
Pages (from-to)555-565
Number of pages11
JournalApplied Ergonomics
Volume58
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Construction uniform
  • Heat strain
  • Moisture management textile

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Safety, Risk, Reliability and Quality
  • Engineering (miscellaneous)

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