Noise-induced sleep disruption increases weight gain and decreases energy metabolism in female rats.
«Noise exposure significantlyincreasedweight gain and food intake compared to females that slept undisturbed. Noise also significantlyincreased wakefulness, reduced sleep and resulted in rebound sleep during the recovery period. Total energy expenditure was significantlylower during both noise exposure and recovery due to lower energy expenditure during spontaneous physical activity and sleep. Notably, noise did not alter the estrous cycle length.
As previously observed in male rats, noise exposure disrupted sleep and increasedweight gain in females but did not alter the length of the estrous cycle. This is the first demonstration of weight gain in female rats during sleep disruption. We conclude that the sleep disruption caused by exposure to environmental noise is a significant tool for determining how sleep loss contributes to obesity in females.»