Dr. Jean-Philippe Chaput is co-author on a paper, “Change in sleep duration and visceral fat accumulation over 6 years in adults,” that was recently published in Obesity. Citation details and a summary of the paper are below.
Chaput JP, Bouchard C, Tremblay A. Change in sleep duration and visceral fat accumulation over 6 years in adults. Obesity (Silver Spring). 2014 May;22(5):E9-E12.
ABSTRACT: Objective.Â To investigate the relationship between change in sleep duration and long-term visceral adiposity change in adults. Methods.Â A longitudinal analysis was conducted on 293 participants, aged 18-65 years, followed for a mean of 6.0 Â± 0.9 years. At baseline and year 6, sleep duration was self-reported and visceral adipose tissue (VAT) assessed using computed tomography. Multivariable modeling was used to examine the association between change in sleep duration and VAT change over the 6-year time period, with adjustments made for age, sex, change in BMI, personal characteristics, energy intake, and physical activity.Â Results.Â Participants gained an average of 19.2 Â± 37.3 cm2Â in VAT over the follow-up period. Baseline short (â‰¤6 h/day) and long (â‰Ą9 h/day) sleepers gained significantly more VAT than those reporting sleeping 7-8 hours a night (23.4 and 20.2 cm2Â vs. 14.1 cm2Â , respectively, P < 0.05). Using continuous data, we observed that the change in sleep duration was not associated with VAT change. However, a change in sleep duration from â‰¤6 h/day to 7-8 h/day was associated with 6 cm2Â fewer VAT gain after multivariable adjustment (P < 0.05).Â Conclusions.Â A spontaneous change in sleep duration (from a short to an adequate duration) is independently and inversely associated with long-term VAT accumulation.