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Increasing physical activity and decreasing sedentary activity in adolescent girls

the Incorporating More Physical Activity and Calcium in Teens (IMPACT) study

Background: Lack of regular physical activity and consequent sub-optimal bone mass acquisition in youth has been implicated as a primary cause of adult-onset osteoporosis. IMPACT was a behavioral theory-based 1.5 years randomized controlled field study aimed at increasing bone accretion in middle school girls.

The objective of this study was to determine the intervention effects of the IMPACT program upon key physical and sedentary activity endpoints among schools that participated in the IMPACT study. Endpoints examined included weight bearing physical activity (WBPA); moderate to vigorous physical activity (MVPA); vigorous physical activity (VPA); MET (metabolic equivalent) - weighted WBPA and MVPA; sedentary activity; before/after-school physical activity; and weekend physical activity.

Conclusion: A well designed and implemented school based health and physical activity intervention can result in a positive influence upon increasing physical activity levels and decreasing sedentary activity. Future interventions should consider a more structured intervention component to obtain significant changes in WBPA.

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Increasing physical activity and decreasing sedentary activity in adolescent girls : the Incorporating More Physical Activity and Calcium in Teens (IMPACT) study

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Auteur(s)

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Desiree Jones
Deanna Hoelscher
Steven Kelder
Albert Hergenroeder
Shreela Sharma

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adolescenten
gezondheid
lichaamsbeweging
meisjes
osteoporose

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