TITLE:
Impact of Smoking on Circadian Typology, Sleep Habits and Mental Health of Japanese Students Aged 18 - 30 Years
AUTHORS:
Takahiro Kawada, Kotaro Oki, Yumiko Yamazaki, Fujiko Tsuji, Miyo Nakade, Teruki Noji, Milada Krejci, Hitomi Takeuchi, Tetsuo Harada
KEYWORDS:
Smoking, Circadian Typology, Sleep Quality, Late-Night TV
JOURNAL NAME:
Psychology,
Vol.7 No.9,
August
9,
2016
ABSTRACT: Many
studies have shown that smoking can be related to worse sleep quality. However,
as the impact of smoking, double view points on mental health and chronotype
have been shortened. An integrated questionnaire including the diurnal type
scale constructed by Torsvall & ?kerstedt, and questions on smoking was
administered to 1376 students attending university and mental training schools (693
women and 683 men), 19.9 years on average in 2010-2013. Only 4.1% of the
participants were smokers and they tended to be more evening-typed than
non-smokers (p = 0.061). Smokers had
significantly more difficulty falling asleep (p = 0.003) and more frequently lacked emotional control (p = 0.001) than non smokers. Smoking,
being evening-type and having poor mental health may all be correlated in
students attending Japanese university and medical
training schools.