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Occupational Health 2018
Journal of Nursing and Health Studies
ISSN: 2574-2825
Page 25
May 28-29, 2018
London, UK
4
th
Edition of International Conference on
Occupational Health and
Safety
T
he circadian rhythm of shift workers changes according to
their work schedule. Circadian rhythm disruption induces
shift work sleep disorder (SWSD), which is one of the most
common health hazards of shift work. We measured the
circadian rhythm and sleep pattern in Korean fire fighters to
investigate the relationship between circadian rhythm and
symptoms for SWSD. The subjects were fire fighters in Seoul
and Ulsan. 139 shift workers and 32 day workers (as control
group) were recruited. We measured distal skin temperature
to identify the circadian rhythm, daily activity to analyze the
sleep pattern, and check bleed cortisol and urinary cortisol and
6-sulfatoxymelatonin. We used iButton® Temperature Logger
(iButton® DS1922L, Maxim Integrated Products, Inc., San
Jose, CA, USA), which is a computer chip enclosed in a 16-mm-
thick stainless steel can. The device was set to measure wrist
temperature every 5 minutes, and attached at the palmar side
of the subjects’ non-dominant wrist. We performed cosinor
analysis to analyze the circadian rhythm of wrist temperature.
We used wGT3X-BT (ActiGraph, Pensacola, FL) to measure
daily activity of the subjects and analyze their sleep patterns.
The wrist temperature and daily activity measurement was
performed in day work, night work, and 24 hours work. The
measurement started in November 2017, and will be completed
around February 2018. We will analyze the data since then.
Biography
Tae-Won Jang completed his Graduation as Medical Doctor from Dong-A
University College of Medicine, with the specialties of Occupational and
Environmental Medicine. He obtained his Post-graduation from Dong-A
University Graduate School of Preventive Medicine. Presently, he has been
working at Hanyang University College of Medicine and Hanyang University
Guri Hospital.
om1024@hanmail.netCircadian rhythm change and shift work sleep disorder in
Korean fire fighters
Tae-Won Jang
1
, Kyoungsook Jeong
2
and
Yeon-Soon Ahn
2
1
Hanyang University College of Medicine, South Korea
2
Dongguk University Ilsan Hospital, South Korea
Tae-Won Jang et al., J Nurs Health Stud 2018, Volume 3
DOI: 10.21767/2574-2825-C2-005