Determining the relationship of sleep duration between energy expenditure and food intake

The current study aimed to determine the relationship of individuals' sleep duration between energy expenditure and food intake. The sample of this study composed of randomly selected individuals who applied to a private obesity clinic in İstanbul, between September and December 2013. Aged between 18-67 years old 7 male and 87 female were participated in the current study. The information about demographic characteristics, nutritional status and sleeping habits were taken via questionnaires. Sleep duration and 3 days food consumptions were recorded by the individuals themselves. Energy expenditure was calculated by using 24-hours physical activity record form. Life satisfaction was determined by a questionnaire. The average age of participants was 39.2±11.3 years, body mass index was 34.3±6.68 kg/m2 and sleep duration was 7.9±0.99 hours. When the sleep duration was questioned, it was seen that 20% of the participants had 6 hours or less, 75.6% had 7 or 8 hours, and 4.3% had more than 8 hours of sleep on weekdays. On the other hand, 13.8% of the participants had 6 hours or less, 61.7% had 7 or 8 hours, and 24.5% had more than 8 hours of sleep during weekends. When the mean sleep duration of individuals compared with energy and fat intake according to week and weekend days, the negative relationship was not found statistically significant (p> 0.05). The difference in basal metabolic rate (BMR), total energy expenditure (TEE), and physical activity levels (PAL) of individuals' according to weekend and weekdays mean sleep duration, there was not any statistically significant differences (p> 0.05). Average sleep duration evaluations showed that, there were significant positive correlations between weekend sleep time and BMR and PAL (r= 0.225, r= 0.223 respectively; p< 0.05). Consequently, sleep is an indispensable part of healthy life. In recent years, the effect of inadequate sleep duration on increasing rates of obesity and diabetes is being remarkable. Many studies indicate the relationship between optimum sleep duration and health.