Characteristics of sleep-wake cycle and sleep duration in Japanese type 2 diabetes patients with visceral fat accumulation.
Sleep pattern has been shown to be associated with type 2 diabetes mellitus. Here, we investigated the difference in bedtime, waking time and estimated sleep duration in type 2 diabetes mellitus patients with or without visceral fat accumulation, using a questionnaire on sleep patterns. The study participants were 59 Japanese type 2 diabetes mellitus patients (men/women 34/25, age 64.5 ± 12.1 years). Visceral fat accumulation was defined as estimated visceral fat area ≥100 cm2. The patients with visceral fat accumulation (n = 40) showed significantly later bedtime (23.51 ± 01.27 h in the [+] group vs 22.49 ± 01.23 h in the [-] group) and shorter estimated sleep duration (6.6 ± 1.4 h in the [+] group vs 7.9 ± 1.0 h in the [-] group) on weekdays, compared with those without (n = 19). Later bedtime and shorter estimated sleep duration existed in the type 2 diabetes mellitus patients with visceral fat accumulation, compared with those without.
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Shiro
S
Fukuda
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Ayumu
A
Hirata
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Hitoshi
http://orcid.org/0000-0002-7845-9693
H
Nishizawa
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Hirofumi
H
Nagao
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Takekazu
T
Kimura
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Yuya
Y
Fujishima
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Masaya
M
Yamaoka
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Junji
J
Kozawa
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Akihisa
A
Imagawa
Departments of Metabolism and Atherosclerosis, Graduate School of Medicine, Osaka University, Osaka, Japan.
Tohru
T
Funahashi
Departments of Metabolism and Atherosclerosis, Graduate School of Medicine, Osaka University, Osaka, Japan.
Norikazu
N
Maeda
Departments of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Iichiro
I
Shimomura
D000368:Aged; D044466:Asian People; D003924:Diabetes Mellitus, Type 2 / Q000503:physiopathology*; D005260:Female; D006801:Humans; D050152:Intra-Abdominal Fat; D007564:Japan; D008297:Male; D008875:Middle Aged; D012890:Sleep; D011795:Surveys and Questionnaires
Sleep; Type 2 diabetes mellitus; Visceral fat