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ObjectiveThe objective of the study was to test the hypothesis that greater fluctuations in physical activity lead to greater increases in body fat during adolescence.
MethodsSeven hundred fifty‐six adolescents in Montreal, Canada, aged 12–13 years at baseline, completed a 7‐d physical activity recall questionnaire every 3 months over 5 years. Body mass index (BMI), waist circumference, and triceps...