Changes in Weight over the School Year and Summer Vacation: Results of a 5-Year Longitudinal Study

Autor/inn/en	Moreno, Jennette P.; Johnston, Craig A.; Woehler, Deborah
Titel	Changes in Weight over the School Year and Summer Vacation: Results of a 5-Year Longitudinal Study
Quelle	In: Journal of School Health, 83 (2013) 7, S.473-477 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-4391
DOI	10.1111/josh.12054
Schlagwörter	Body Weight; Child Health; Longitudinal Studies; Elementary School Students; Young Children; Student Diversity; Comparative Analysis; Obesity; Kindergarten; Leisure Time; Vacations; Texas + Suchen Sie Ihr Suchwort? Körpergewicht; Longitudinal study; Longitudinal method; Longitudinal methods; Längsschnittuntersuchung; Frühe Kindheit; Adipositas; Freizeit; Holidays; Ferien
Abstract	Background: Evidence suggests that children gain more weight during the summer months compared with the school year. To examine the impact of the school and summer environment on children's weight further, we conducted a 5-year longitudinal study examining changes in standardized BMI (zBMI) of students entering kindergarten. Methods: Heights and weights were obtained at the beginning and end of each school year for 3,588 ethnically diverse (Caucasian: 27.2%, Black: 29.0%, Hispanic: 26.4%, and Asian 17.4%) students aged 5-7. Results: A significant difference in change in zBMI during the school and summer months was found (-0.52, 95% CI: -0.59 to -0.45, p less than 0.001; Wald x[superscript 2] = 171.89, p less than 0.001). Overall, children decreased BMI percentile during time spent in school by 1.5 percentile points and increased by 5.2 percentile points during summer months. Differences in the velocity of weight gain were found across weight classification categories with only overweight and obese children decreasing their zBMI during the school year. Conclusion: Time spent in school was shown to have a beneficial impact on students' weight, especially for students who were overweight or obese. However, these results are alarming because weight gain during elementary school occurs primarily during the relatively short span of summer break. (Contains 2 tables and 1 figure.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10