A prospective examination of children's time spent outdoors, objectively measured physical activity and overweight
- 14 October 2008
- journal article
- research article
- Published by Springer Science and Business Media LLC in International Journal of Obesity
- Vol. 32 (11), 1685-1693
- https://doi.org/10.1038/ijo.2008.171
Abstract
Objective: This study aimed to determine whether time spent outdoors was associated with objectively measured physical activity, body mass index (BMI) z-score and overweight in elementary-school aged children, cross-sectionally and prospectively over 3 years. Methods: Three-year cohort study with data collected during 2001 and 2004. Nineteen randomly selected state elementary schools across Melbourne, Australia. One hundred and eighty eight 5–6-year-old and 360 10–12-year-old children. Baseline parent reports of children's time spent outdoors during warmer and cooler months, on weekdays and weekends. At baseline and follow-up, children's moderate and vigorous physical activity (MVPA) was objectively assessed by accelerometry, and BMI z-score and overweight was calculated from measured height and weight. Results: Cross-sectionally, each additional hour outdoors on weekdays and weekend days during the cooler months was associated with an extra 27 min week−1 MVPA among older girls, and with an extra 20 min week−1 MVPA among older boys. Longitudinally, more time outdoors on weekends predicted higher MVPA on weekends among older girls and boys (5 min week−1). The prevalence of overweight among older children at follow-up was 27–41% lower among those spending more time outdoors at baseline. Conclusion: Encouraging 10–12-year-old children to spend more time outdoors may be an effective strategy for increasing physical activity and preventing increases in overweight and obesity. Intervention research investigating the effect of increasing time outdoors on children's physical activity and overweight is warranted.Keywords
This publication has 23 references indexed in Scilit:
- Dietary, physical activity and sedentary behaviour among Australian secondary students in 2005Health Promotion International, 2007
- Environmental correlates of physical activity in youth – a review and updateObesity Reviews, 2006
- A National Study of Neighborhood Safety, Outdoor Play, Television Viewing, and Obesity in Preschool ChildrenPediatrics, 2005
- Physical inactivity in Canadian adolescents and their associations with chronic disease and social economicsInternational Journal of Adolescent Medicine and Health, 2005
- Perceptions of local neighbourhood environments and their relationship to childhood overweight and obesityInternational Journal of Obesity, 2004
- Perceptions about the local neighborhood and walking and cycling among childrenPreventive Medicine, 2004
- Observations on Physical Activity in Physical Locations: Ager Gender, Ethnicity, and Month EffectsResearch Quarterly for Exercise and Sport, 1993
- Correlates of physical activity at home in Mexican-American and Anglo-American preschool children.Health Psychology, 1993
- Correlates of physical activity at home in Mexican-American and Anglo-American preschool children.Health Psychology, 1993
- Effects of obesity, social interactions, and physical environment on physical activity in preschoolers.Health Psychology, 1990