A survey of junior high school students’ sleep habit and lifestyle in Okinawa

Abstract

A survey was made of the sleep and lifestyle activity patterns of 3754 students from 14 different junior high schools on Okinawa Island. The survey showed that bedtimes became progressively and significantly later as students ascended to higher grades, resulting in adolescent sleep debt. The later adolescents retired to sleep, there appeared significantly greater numbers suffering from insufficient sleep, who found difficulty in waking up, who arose later in the mornings, and who failed to eat breakfast. The study indicated that along with later bedtimes, staying up late resulted in deterioration of sleep health, poor dietary habits and feeling ill, contributing to sleepiness during class.

Sleep duration, wake/sleep symptoms, and academic performance in Hong Kong Secondary School Children

“…It was common for bedtime to be delayed for adolescents while rise time remained the same [18]. The findings of this study were similar to previous reports in secondary school students.…”

Skipping breakfast is correlated with impaired fasting glucose in apparently healthy subjects

“…A significant association between SHSB and late dinner suggests that those persons skipping breakfast habitually, rather than intentionally as part of a diet, possibly have a nocturnal lifestyle [19,20]. Indeed, a late dinner just before sleeping may impair postprandial glucose metabolism and food digestion, and it may lead to prolonged elevated FPG and poor appetite in the morning.…”

Exploring the Daily Activities Associated with Delayed Bedtime of Japanese University Students

“…These results mean that dinner at a later time was related to delayed bedtime in the LF group, and eating breakfast was associated with an earlier bedtime in the LA group. Many studies have suggested a relationship between meal habits and sleep pattern and/or sleep quality (e.g., Arakawa et al 2001;Tanaka et al 2002;Nakade et al 2009). Moreover, studies on mammals such as rodents suggest that the timing of food intake may entrain the internal biological clock system either directly or indirectly through other neural or peripheral systems (Mendoza 2007).…”