PMID- 29590331
OWN - NLM
STAT- MEDLINE
DCOM- 20190626
LR  - 20190626
IS  - 2398-7316 (Electronic)
IS  - 2398-7308 (Linking)
VI  - 62
IP  - 5
DP  - 2018 May 28
TI  - Heat Strain and Hydration of Japanese Construction Workers during Work in Summer.
PG  - 571-582
LID - 10.1093/annweh/wxy012 [doi]
AB  - OBJECTIVES: The aim was to ascertain hydration and heat strain of construction 
      workers in Japan during the summer who are at the highest risk of heat-related 
      disorders. METHODS: The subjects were 23 construction workers, whose average age 
      was 41, average weight was 69 kg, and average height was 170 cm. We measured 
      thermal working conditions with a wet bulb globe temperature (WBGT) measurement 
      instrument affixed to the helmet of each worker, at fixed points outdoors in the 
      sun and indoors. Heat strain was evaluated for water intake, urine specific 
      gravity (Usg), urine temperature (UT), heart rate (HR), and body weight during 
      work. RESULTS: The average WBGT measured on the worker helmets over 3 consecutive 
      days was 28.0 +/- 0.7, 27.6 +/- 0.8, and 27.6 +/- 1.1 degrees C. The average water intake was 
      2.6 l during a work shift. The average Usg, UT, and % HR reserve were the highest 
      in the first half of afternoon work. Seventy-eight percent of the subjects 
      exceeded at least one of the ACGIH TLV physiological guidelines for heat strain 
      in terms of HR and weight loss or a clinically dehydrated level of Usg. 
      CONCLUSIONS: Heat strain was the highest in the first half of afternoon work. The 
      number of dehydrated workers increased during this shift because of insufficient 
      water intake. Adequate hydration is required to decrease the risk of heat-related 
      disorders among construction workers in the summer.
FAU - Ueno, Satoru
AU  - Ueno S
AD  - National Institute of Occupational Safety and Health, Japan Organization of 
      Occupational Health and Safety, Nagao, Tama-ku, Kawasaki, Kanagawa, Japan.
FAU - Sakakibara, Yoko
AU  - Sakakibara Y
AD  - Department of Health and Physical Education, Aichi University of Education, 
      Hirosawa, Igaya-cho, Kariya, Aichi, Japan.
FAU - Hisanaga, Naomi
AU  - Hisanaga N
AD  - Department of food Science and Nutrition, Aichi Gakusen University, Kamikawanari, 
      Hegosi-cho, Okazaki, Aichi, Japan.
FAU - Oka, Tatsuo
AU  - Oka T
AD  - National Institute of Occupational Safety and Health, Japan Organization of 
      Occupational Health and Safety, Nagao, Tama-ku, Kawasaki, Kanagawa, Japan.
FAU - Yamaguchi-Sekino, Sachiko
AU  - Yamaguchi-Sekino S
AD  - National Institute of Occupational Safety and Health, Japan Organization of 
      Occupational Health and Safety, Nagao, Tama-ku, Kawasaki, Kanagawa, Japan.
LA  - eng
PT  - Journal Article
PL  - England
TA  - Ann Work Expo Health
JT  - Annals of work exposures and health
JID - 101698454
SB  - IM
MH  - Adult
MH  - Body Temperature
MH  - *Construction Industry
MH  - Dehydration/*epidemiology
MH  - Heart Rate
MH  - Heat Stress Disorders/*epidemiology
MH  - *Hot Temperature
MH  - Humans
MH  - Japan/epidemiology
MH  - Male
MH  - Middle Aged
MH  - Occupational Exposure/*statistics & numerical data
MH  - Specific Gravity
MH  - Urinalysis
MH  - Water Loss, Insensible
EDAT- 2018/03/29 06:00
MHDA- 2019/06/27 06:00
CRDT- 2018/03/29 06:00
PHST- 2017/05/17 00:00 [received]
PHST- 2018/02/13 00:00 [accepted]
PHST- 2018/03/29 06:00 [pubmed]
PHST- 2019/06/27 06:00 [medline]
PHST- 2018/03/29 06:00 [entrez]
AID - 4953550 [pii]
AID - 10.1093/annweh/wxy012 [doi]
PST - ppublish
SO  - Ann Work Expo Health. 2018 May 28;62(5):571-582. doi: 10.1093/annweh/wxy012.