Keith Brazendale1, Michael W Beets2, Gabrielle M Turner-McGrievy3, Andrew T Kaczynski4, Russell R Pate5, Robert G Weaver6. 1. Department of Exercise Science, University of South Carolina, 921 Assembly Street, Rm. 134, Columbia, SC 29208. 2. Department of Exercise Science, University of South Carolina, 921 Assembly Street, Rm. 131, Columbia, SC 29208. 3. Department of Health Promotion Education and Behavior, University of South Carolina, 915 Greene Street, Rm. 552, Columbia, SC 29208. 4. Department of Health Promotion Education and Behavior, University of South Carolina, 915 Greene Street, Rm. 529, Columbia, SC 29208. 5. Department of Exercise Science, University of South Carolina, 921 Assembly Street, Rm. 214, Columbia, SC 29208. 6. Department of Exercise Science, University of South Carolina, 921 Assembly Street, Rm. 130, Columbia, SC 29208.
Abstract
BACKGROUND: Evidence consistently shows children in the United States gain 3 to 5 times more weight during summer vacation (∼2.5 months) compared to the 9-month school year. The purpose of this study is to examine within-child differences in 4 obesogenic behaviors (physical activity [PA], sedentary/screen-time, diet, and sleep) during school versus summer. METHODS: We used a repeated-measures within-subjects design. Children (N = 30 mean age = 8.2 years; 57% female; 37% overweight/obese; 100% African American) wore accelerometers on the nondominant wrist for 24 hr/d over 9 consecutive days during school and summer of 2016 to capture PA, sedentary time, and sleep. Parents completed a daily diary to report bed/wake times, diet, and screen-time of their child each day. Mixed-effect models compared summer and school behaviors. RESULTS: Children spent more time sedentary (69% vs 67% of wake wear time), less time in light PA (25% vs 23% of wake wear time), had higher screen-time (242 vs 123 minutes/day), slept longer (428 vs 413 minutes/night), and consumed more sugar-based foods (6 days vs 2.5 days/week) and fruit (7 days vs 4.7 days/week) during summer compared to school (p < .05). CONCLUSION: Initial evidence suggests children are displaying multiple unfavorable obesogenic behaviors during summer compared to school that may contribute to accelerated weight gain during summer.
BACKGROUND: Evidence consistently shows children in the United States gain 3 to 5 times more weight during summer vacation (∼2.5 months) compared to the 9-month school year. The purpose of this study is to examine within-child differences in 4 obesogenic behaviors (physical activity [PA], sedentary/screen-time, diet, and sleep) during school versus summer. METHODS: We used a repeated-measures within-subjects design. Children (N = 30 mean age = 8.2 years; 57% female; 37% overweight/obese; 100% African American) wore accelerometers on the nondominant wrist for 24 hr/d over 9 consecutive days during school and summer of 2016 to capture PA, sedentary time, and sleep. Parents completed a daily diary to report bed/wake times, diet, and screen-time of their child each day. Mixed-effect models compared summer and school behaviors. RESULTS:Children spent more time sedentary (69% vs 67% of wake wear time), less time in light PA (25% vs 23% of wake wear time), had higher screen-time (242 vs 123 minutes/day), slept longer (428 vs 413 minutes/night), and consumed more sugar-based foods (6 days vs 2.5 days/week) and fruit (7 days vs 4.7 days/week) during summer compared to school (p < .05). CONCLUSION: Initial evidence suggests children are displaying multiple unfavorable obesogenic behaviors during summer compared to school that may contribute to accelerated weight gain during summer.
Authors: Kristen Zosel; Courtney Monroe; Ethan Hunt; Chantal Laflamme; Keith Brazendale; R Glenn Weaver Journal: Int J Obes (Lond) Date: 2022-01-06 Impact factor: 5.095
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: Robert Glenn Weaver; Ethan Hunt; Bridget Armstrong; Michael W Beets; Keith Brazendale; Gabrielle Turner-McGrievy; Russell R Pate; Alberto Maydeu-Olivares; Brian Saelens; Shawn D Youngstedt; Roddrick Dugger; Hannah Parker; Lauren von Klinggraeff; Alexis Jones; Sarah Burkhart; Layton Ressor-Oyer Journal: Pediatr Obes Date: 2021-03-25 Impact factor: 4.000
Authors: Taylor S Lane; Derek L Sonderegger; Whitney M Holeva-Eklund; Keith Brazendale; Timothy K Behrens; Hiliary Howdeshell; Sherry Walka; Jon R Cook; Hendrik D de Heer Journal: Am J Prev Med Date: 2021-02-23 Impact factor: 5.043
Authors: Amelie A Hecht; Caroline Glagola Dunn; Eliza W Kinsey; Margaret A Read; Ronli Levi; Andrea S Richardson; Erin R Hager; Hilary K Seligman Journal: Nutrients Date: 2022-03-26 Impact factor: 6.706
Authors: R Dugger; K Brazendale; E T Hunt; J B Moore; G Turner-McGrievy; K Vogler; M W Beets; B Armstrong; R G Weaver Journal: Pilot Feasibility Stud Date: 2020-05-28