장태원
2019-11-30T08:07:08Z
2019-11-30T08:07:08Z
2017-09
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, v. 14, no. 10, Article no. 1109
1660-4601
https://www.mdpi.com/1660-4601/14/10/1109
https://repository.hanyang.ac.kr/handle/20.500.11754/115477
Background: Human body temperature varies with circadian rhythm. To determine the effect of shift work on the circadian rhythm of the distal-skin temperature, wrist temperatures were measured. Methods: Wrist-skin temperatures were measured by an iButton (R) Temperature Logger. It was measured every 3 min for two and eight consecutive working days in the day and shift workers, respectively. Mesor, amplitude, and acrophase were measured by Cosinor analysis. Results: The shift-worker amplitude dropped significantly as the night shift progressed (0.92 to 0.85 degrees C), dropped further during rest (0.69 degrees C), and rose during the morning-shift days (0.82 degrees C). Day workers still had higher amplitudes (0.93 degrees C) than the morning-shift workers. The acrophase was delayed during the four night-shift days, then advanced during rest days and the morning-shift days. Nevertheless, the morning-shift worker acrophase was still significantly delayed compared to the day workers (08:03 a.m. vs. 04:11 a.m.). Conclusions: The further reduction of wrist-temperature amplitude during rest after the night shift may be due to the signal circadian rhythm disruption. Reduced amplitudes have been reported to be associated with intolerance to shift work. The findings of our study may help to design the most desirable schedule for shift workers.
This research was supported via a study aimed to minimize the health hazards of shift work that was funded by SK Hynix.
en_US
MDPI AG
circadian rhythm
shift work
body temperature
wrist temperature
Cosinor analysis
Circadian Rhythm of Wrist Temperature among Shift Workers in South Korea: A Prospective Observational Study
Article
10
14
10.3390/ijerph14101109
1-9
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
Jang, Tae-Won
Kim, Hyunjoo
Kang, Suk-Hoon
Choo, Sang-Hyo
Lee, In-Seok
Choi, Kyung-Hwa
2017008009
S
COLLEGE OF MEDICINE[S]
DEPARTMENT OF MEDICINE
om1024
http://orcid.org/0000-0003-2624-3257