TY - JOUR
T1 - The Medical College of Georgia FitKid Project
T2 - The relations between program attendance and changes in outcomes in year 1
AU - Yin, Z.
AU - Moore, J. B.
AU - Johnson, M. H.
AU - Barbeau, P.
AU - Cavnar, M.
AU - Thornburg, J.
AU - Gutin, B.
N1 - Funding Information:
We would like to express our appreciation to the Richmond County Board of Education (Ms Stacy Mabray, Dr Audrey Wood, Dr Carol Roundtree and Mr Joe Brandenburg), the principals and teachers for their support and cooperation. Thanks are also extended to Dr Ken Resnicow, Dr Tom Baranowski and Dr Joan Duda for their consultation on this study. Funding for this project was provided by the National Institutes of Health (RO1 DK63391).
PY - 2005/9
Y1 - 2005/9
N2 - OBJECTIVE: To investigate the relations of attendance of children in an after-school physical activity (PA) program to changes in body composition and cardiovascular fitness (CVF). DESIGN: Eight-month after-school PA-based intervention.Subjects:In all, 278 third-grade boys and girls from nine elementary schools (age, 8.7 y (s.d.=0.6 y), body mass index (BMI) 19.1 kg/m2 (s.d.=4.4) and percent body fat (%BF) 26.0 (s.d.=9.0)). MEASUREMENTS: Body composition (from dual-energy X-ray absorptiometry), BMI (from height and weight), waist circumference (WC) and CVF (from the YMCA submaximal bench-stepping test). RESULTS: There was a significant negative linear trend between level of attendance in the after-school program and change in %BF and fat mass; there was also a significant positive linear trend between program attendance and change in CVF. There was a marginally significant linear trend between program attendance and fat-free mass. Greater increases in bone mineral density were observed with higher program attendance. Changes in BMI and WC were not influenced by program attendance. CONCLUSION: Understanding the dose–response effect of PA on health outcomes, particularly body composition, in children is crucial in our effort to prevent overweight and its health consequences. Since there is limited data available to base PA dose recommendations for youths, findings from this study are relevant, and suggest that greater health benefits can be obtained in young children with more frequent participation in PA.
AB - OBJECTIVE: To investigate the relations of attendance of children in an after-school physical activity (PA) program to changes in body composition and cardiovascular fitness (CVF). DESIGN: Eight-month after-school PA-based intervention.Subjects:In all, 278 third-grade boys and girls from nine elementary schools (age, 8.7 y (s.d.=0.6 y), body mass index (BMI) 19.1 kg/m2 (s.d.=4.4) and percent body fat (%BF) 26.0 (s.d.=9.0)). MEASUREMENTS: Body composition (from dual-energy X-ray absorptiometry), BMI (from height and weight), waist circumference (WC) and CVF (from the YMCA submaximal bench-stepping test). RESULTS: There was a significant negative linear trend between level of attendance in the after-school program and change in %BF and fat mass; there was also a significant positive linear trend between program attendance and change in CVF. There was a marginally significant linear trend between program attendance and fat-free mass. Greater increases in bone mineral density were observed with higher program attendance. Changes in BMI and WC were not influenced by program attendance. CONCLUSION: Understanding the dose–response effect of PA on health outcomes, particularly body composition, in children is crucial in our effort to prevent overweight and its health consequences. Since there is limited data available to base PA dose recommendations for youths, findings from this study are relevant, and suggest that greater health benefits can be obtained in young children with more frequent participation in PA.
KW - After-school program
KW - Body composition
KW - Cardiovascular fitness
KW - Doseresponse
KW - Physical activity
KW - Program attendance
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U2 - 10.1038/sj.ijo.0803061
DO - 10.1038/sj.ijo.0803061
M3 - Article
C2 - 16385751
AN - SCOPUS:33644973479
SN - 0307-0565
VL - 29
SP - S40-S45
JO - International Journal of Obesity
JF - International Journal of Obesity
ER -