Lee Stoner1, Nicholas Castro2,3, Leigh Signal4, Paula Skidmore5, James Faulkner6, Sally Lark2,3, Michelle A Williams6, Diane Muller4, Harriet Harrex5. 1. 1 Department of Exercise and Sport Science, University of North Carolina at Chapel Hill , Chapel Hill, NC. 2. 2 School of Sport and Exercise, Massey University , Wellington, New Zealand . 3. 3 Speep-Wake Research Centre, Massey University , Wellington, New Zealand . 4. 4 Department of Human Nutrition, University of Otago , Dunedin, New Zealand . 5. 5 Sport and Exercise, University of Winchester , Winchester, United Kingdom . 6. 6 Department of Epidemiology, Harvard T.H. Chan School of Public Health , Boston, MA.
Abstract
BACKGROUND: While short and poor quality sleep have been associated with childhood obesity, no known studies have examined social jetlag. Social jetlag is the discrepancy between an individual's circadian clock and social rhythms, and is measured as the difference in hours between the midpoint of sleep during work/school days and on free (weekend) days. This study investigated the independent associations between sleep duration, sleep disturbances, and social jetlag with adiposity in children. METHODS: A cross-sectional study, including 341 children (50% female) aged 8-10 years. Five dependent variables: body fat (%), fat mass (kg), fat mass index (FMI, kg/m2), waist to hip ratio, and body mass index (kg/m2). Three independent variables: average sleep duration, sleep disturbances, and social jetlag. RESULTS: Following adjustment for confounders, sleep duration was not associated with any variable, and sleep disturbances were associated with FMI (β = 0.047, 95% CI: 0.002, 0.093 kg/m2), while social jetlag was associated with all five adiposity variables, including an absolute 3% greater body fat (β = 2.963, 95% CI: 0.40, 5.53%) per 1 hour of social jetlag. CONCLUSIONS: Social jetlag may be an important and measurable public health target in children.
BACKGROUND: While short and poor quality sleep have been associated with childhood obesity, no known studies have examined social jetlag. Social jetlag is the discrepancy between an individual's circadian clock and social rhythms, and is measured as the difference in hours between the midpoint of sleep during work/school days and on free (weekend) days. This study investigated the independent associations between sleep duration, sleep disturbances, and social jetlag with adiposity in children. METHODS: A cross-sectional study, including 341 children (50% female) aged 8-10 years. Five dependent variables: body fat (%), fat mass (kg), fat mass index (FMI, kg/m2), waist to hip ratio, and body mass index (kg/m2). Three independent variables: average sleep duration, sleep disturbances, and social jetlag. RESULTS: Following adjustment for confounders, sleep duration was not associated with any variable, and sleep disturbances were associated with FMI (β = 0.047, 95% CI: 0.002, 0.093 kg/m2), while social jetlag was associated with all five adiposity variables, including an absolute 3% greater body fat (β = 2.963, 95% CI: 0.40, 5.53%) per 1 hour of social jetlag. CONCLUSIONS: Social jetlag may be an important and measurable public health target in children.
Authors: Alison L Miller; Sara E Miller; Monique K LeBourgeois; Julie Sturza; Katherine L Rosenblum; Julie C Lumeng Journal: Appetite Date: 2019-01-08 Impact factor: 3.868
Authors: Maria Giannoumis; Elise Mok; Cornelia M Borkhoff; Catherine S Birken; Jonathon Maguire; Patricia C Parkin; Patricia Li; Evelyn Constantin Journal: J Clin Sleep Med Date: 2022-08-01 Impact factor: 4.324
Authors: R Glenn Weaver; Michael W Beets; Michelle Perry; Ethan Hunt; Keith Brazendale; Lindsay Decker; Gabrielle Turner-McGrievy; Russell Pate; Shawn D Youngstedt; Brian E Saelens; Alberto Maydeu-Olivares Journal: Sleep Date: 2019-01-01 Impact factor: 5.849
Authors: Bridget Armstrong; Michael W Beets; Angela Starrett; Keith Brazendale; Gabrielle Turner-McGrievy; Brian E Saelens; Russell R Pate; Shawn D Youngstedt; Alberto Maydeu-Olivares; R Glenn Weaver Journal: Sleep Date: 2021-02-12 Impact factor: 5.849
Authors: Jennette P Moreno; Stephanie J Crowley; Candice A Alfano; Kevin M Hannay; Debbe Thompson; Tom Baranowski Journal: Int J Behav Nutr Phys Act Date: 2019-03-07 Impact factor: 6.457
Authors: R Glenn Weaver; Bridget Armstrong; Ethan Hunt; Michael W Beets; Keith Brazendale; R Dugger; Gabrielle Turner-McGrievy; Russell R Pate; Alberto Maydeu-Olivares; Brian Saelens; Shawn D Youngstedt Journal: Int J Behav Nutr Phys Act Date: 2020-11-26 Impact factor: 6.457