Patients who slept for short or long period of weight gain than those who sleep longer average 7-9 hours, according to reports longitudinal study reported in the journal Sleep month of April.
“Individual and environmental factors that affect energy balance is not fully understood.” Writes Jean Philippe Chaput MSc from University Laval in Quebec Canada.
Current treatments for obesity are generally not managed to maintain weight loss long term, so take a new look at the mechanisms that cause changes in metabolism and behavior that may lead to obesity.
To determine the relationship to sleep duration and weight and the addition of fat, researchers evaluated the body composition measurements and patient self report of sleep duration in 276 adults aged 21 to 64 years participating in the Quebec family study, the duration of 6 years.
More than half the sample came from families with at least one parent and 1 child with a BMI of 32 kg/m2 or more.
Researchers compared changes in obesity index among the groups with short sleep (5-6 hours), average sleep time (7-8 hours), and the long long sleep (9-10 hours)
Compared with the average sleep time, sleep a short time, weight increases more than 1.98 kg in 6 years and a long sleep more than 1:58 kg after adjusting for age, sex, initial BMI.
In year 6, a short sleep and long sleep possible weight gain 5 kg each 35% and 25% compared to the average bed.
Compared with the average sleep time, which has a short bed 27% increased risk for becoming overweight and in a long long sleep had increased risk of 21%. Adjustment for energy intake and physical activity did not affect this situation, which remained significantly different after the covariance includes important
Limitations of this study include measurements based on the questions, a small number of samples so that statistical power is limited, the diversity of age, who do not use random samples to examine the role of genetics as a cause of obesity, reporting long sleep of the participants themselves, and possible confounding by variables that are not measured the relationship between long sleep and obesity as breathing disorders during sleep, insomnia and depression.
“This study equip evidence that short sleep and long sleep in the predictions will increase the risk of weight gain and increased fat in the future in adults,” write the authors. “Furthermore, these results emphasize the need to add sleep duration as a key factor that contributes to weight gain and obesity”.
