Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study

Abstract Background Summer vacation is a time when youth gain excessive weight. A key driver of unhealthy weight gain is poor dietary quality. The absence of consistent structure (e.g., school), is hypothesized to be one of the reasons for lower diet quality during summer. This study examined differ...

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Main Authors: Michael W. Beets, Sarah Burkart, Christopher D. Pfledderer, Elizabeth Adams, R. Glenn Weaver, Bridget Armstrong, Keith Brazendale, Xuanxuan Zhu, Alexander McLain, Gabrielle Turner-McGrievy, Russell Pate, Andrew Kaczynski, Amanda Fairchild, Brian Saelens, Hannah Parker, Amy L. Yaroch, Emily Eglitis, Anthony J. Holmes
Format: Article
Language:English
Published: BMC 2025-07-01
Series:BMC Public Health
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Online Access:https://doi.org/10.1186/s12889-025-23446-0
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author Michael W. Beets
Sarah Burkart
Christopher D. Pfledderer
Elizabeth Adams
R. Glenn Weaver
Bridget Armstrong
Keith Brazendale
Xuanxuan Zhu
Alexander McLain
Gabrielle Turner-McGrievy
Russell Pate
Andrew Kaczynski
Amanda Fairchild
Brian Saelens
Hannah Parker
Amy L. Yaroch
Emily Eglitis
Anthony J. Holmes
author_facet Michael W. Beets
Sarah Burkart
Christopher D. Pfledderer
Elizabeth Adams
R. Glenn Weaver
Bridget Armstrong
Keith Brazendale
Xuanxuan Zhu
Alexander McLain
Gabrielle Turner-McGrievy
Russell Pate
Andrew Kaczynski
Amanda Fairchild
Brian Saelens
Hannah Parker
Amy L. Yaroch
Emily Eglitis
Anthony J. Holmes
author_sort Michael W. Beets
collection DOAJ
description Abstract Background Summer vacation is a time when youth gain excessive weight. A key driver of unhealthy weight gain is poor dietary quality. The absence of consistent structure (e.g., school), is hypothesized to be one of the reasons for lower diet quality during summer. This study examined differences in school and summer dietary quality among a diverse cohort of children across three years. We also examined the impact of attending structured programs on children’s diets. Methods Parents of 1,032 children (age 5–14 years, 48% girls) completed a time use diary each day for 14-days during school (April/May) and again in summer (July) from 2021 to 2023, for a total of 6 timepoints. The daily diary collected information on the child’s location and dietary intake for that day. Mixed-effects models examined the odds (OR) of consuming a food/beverage (e.g., fruit, vegetable, soda, salty snacks) on a given day during school vs. summer, overall and by income. Models also examined the impact of attending structured programming during summer (e.g., summer day camp) on the likelihood of consumption. Results A total of 39,983 time use diaries were completed. Overall, children were less likely to consume fruit, vegetables, milk, 100% juice, and salty snacks (OR range 0.63 to 0.87), and they were more likely to consume non-carbonated sweetened beverages, soda, frozen desserts, and fast food (OR range 1.17 to 1.63) during the summer compared to school. On summer days with structured programming, children were more likely to consume fruits, vegetables, milk, salty snacks, sweetened beverages (OR range 1.13 to 1.45), and they were less likely to consume frozen desserts, fast food, and soda (OR range 0.63 to 0.90). Few differences were observed between income groups. Conclusions Children were less likely to report consumption of healthier foods/beverages and more likely to report consumption of unhealthier foods/beverages during summer compared to school. Attending structured programming during summer is associated with improved diet– suggesting such settings have potential to modify dietary intake.
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spelling doaj-art-b75e357712cd4c1bb9d9e842b3eb763c2025-08-20T04:02:50ZengBMCBMC Public Health1471-24582025-07-0125111110.1186/s12889-025-23446-0Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort studyMichael W. Beets0Sarah Burkart1Christopher D. Pfledderer2Elizabeth Adams3R. Glenn Weaver4Bridget Armstrong5Keith Brazendale6Xuanxuan Zhu7Alexander McLain8Gabrielle Turner-McGrievy9Russell Pate10Andrew Kaczynski11Amanda Fairchild12Brian Saelens13Hannah Parker14Amy L. Yaroch15Emily Eglitis16Anthony J. Holmes17Arnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaSchool of Public Health, UT Health HoustonArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaDepartment of Health Sciences, University of Central FloridaArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaArnold School of Public Health, University of South CarolinaCollege of Arts and Sciences, University of South CarolinaSeattle Children’s HospitalArnold School of Public Health, University of South CarolinaCenter for Nutrition & Health ImpactUniversity of South AustraliaArnold School of Public Health, University of South CarolinaAbstract Background Summer vacation is a time when youth gain excessive weight. A key driver of unhealthy weight gain is poor dietary quality. The absence of consistent structure (e.g., school), is hypothesized to be one of the reasons for lower diet quality during summer. This study examined differences in school and summer dietary quality among a diverse cohort of children across three years. We also examined the impact of attending structured programs on children’s diets. Methods Parents of 1,032 children (age 5–14 years, 48% girls) completed a time use diary each day for 14-days during school (April/May) and again in summer (July) from 2021 to 2023, for a total of 6 timepoints. The daily diary collected information on the child’s location and dietary intake for that day. Mixed-effects models examined the odds (OR) of consuming a food/beverage (e.g., fruit, vegetable, soda, salty snacks) on a given day during school vs. summer, overall and by income. Models also examined the impact of attending structured programming during summer (e.g., summer day camp) on the likelihood of consumption. Results A total of 39,983 time use diaries were completed. Overall, children were less likely to consume fruit, vegetables, milk, 100% juice, and salty snacks (OR range 0.63 to 0.87), and they were more likely to consume non-carbonated sweetened beverages, soda, frozen desserts, and fast food (OR range 1.17 to 1.63) during the summer compared to school. On summer days with structured programming, children were more likely to consume fruits, vegetables, milk, salty snacks, sweetened beverages (OR range 1.13 to 1.45), and they were less likely to consume frozen desserts, fast food, and soda (OR range 0.63 to 0.90). Few differences were observed between income groups. Conclusions Children were less likely to report consumption of healthier foods/beverages and more likely to report consumption of unhealthier foods/beverages during summer compared to school. Attending structured programming during summer is associated with improved diet– suggesting such settings have potential to modify dietary intake.https://doi.org/10.1186/s12889-025-23446-0DietVacationChildrenPovertyLow-income
spellingShingle Michael W. Beets
Sarah Burkart
Christopher D. Pfledderer
Elizabeth Adams
R. Glenn Weaver
Bridget Armstrong
Keith Brazendale
Xuanxuan Zhu
Alexander McLain
Gabrielle Turner-McGrievy
Russell Pate
Andrew Kaczynski
Amanda Fairchild
Brian Saelens
Hannah Parker
Amy L. Yaroch
Emily Eglitis
Anthony J. Holmes
Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
BMC Public Health
Diet
Vacation
Children
Poverty
Low-income
title Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
title_full Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
title_fullStr Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
title_full_unstemmed Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
title_short Differences in children’s food and beverage consumption between school and summer: three-year findings from the what’s UP (Undermining Prevention) with summer observational cohort study
title_sort differences in children s food and beverage consumption between school and summer three year findings from the what s up undermining prevention with summer observational cohort study
topic Diet
Vacation
Children
Poverty
Low-income
url https://doi.org/10.1186/s12889-025-23446-0
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