Abstract
Objective & Methods: The influence of sleep duration on lifestyle and metabolic disorders was evaluated by analyzing questionnaire responses and general health data from persons undergoing health check-ups. Questionnaire items included daily living habits, self-efficacy, family support and medical support.
Results: Responses to 200 questionnaire items were analyzed by the Spearman test to evaluate correlations with sleep duration, Responses regarding 38 items showed significant correlations with sleep duration. In factor analysis conducted to determine common factors among these 38 variables, the 8 factors of eating habits, favorite meals, family support, self-efficacy, self-evaluation, exercise habit, weight control were determined. Any items regarding medical support were not determined. Three medical record items - 2-hour blood glucose after 75 g oral glucose load, HbA1c, and body fat percentage - were negatively correlated with sleeping duration. Ordinal logistic regression analysis performed using sleep duration as a dependent variable and the above 41 significant variables as independent variables revealed that 7 variables (in short sleepers: often have a dinner after 9 o’clock, often have no breakfast, often have between-meal snacks, do not drink much, have less family support, less regular lifestyle and higher HbA1c) were selected as significant dependent factors The odds ratio for persons with HbA1c ≥ 6.2% who sleep less than 6 hours to those who sleep more than 6 hours was 2.046.
Conclusions: Short sleepers had high HbA1c levels and characteristic lifestyles and self-efficacies
