This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow P3Rs: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when P3Rs are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow E-mail this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My File Cabinet
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Berkey, C. S.
Right arrow Articles by Colditz, G. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Berkey, C. S.
Right arrow Articles by Colditz, G. A.
Related Collections
Right arrow Nutrition & Metabolism

PEDIATRICS Vol. 105 No. 4 April 2000, p. e56

ELECTRONIC ARTICLE:
Activity, Dietary Intake, and Weight Changes in a Longitudinal Study of Preadolescent and Adolescent Boys and Girls

Received Aug 6, 1999; accepted Dec 3, 1999.

Catherine S. Berkey*, Dagger , Helaine R. H. Rockett*, Alison E. Field*, Matthew W. Gillmanparallel , A. Lindsay Frazier*, #, Carlos A. Camargo, Jr, MD*, , and Graham A. Colditz*, §

From * Channing Laboratory, Brigham & Women's Hospital, Harvard Medical School; Departments of Dagger  Health Policy and Management and § Epidemiology, Harvard School of Public Health; parallel  Department of Ambulatory Care and Prevention, Harvard Medical School, Harvard Pilgrim Health Care;  Department of Emergency Medicine, Massachusetts General Hospital; and # Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.

Objective.  To examine the role of physical activity, inactivity, and dietary patterns on annual weight changes among preadolescents and adolescents, taking growth and development into account.

Study Design.  We studied a cohort of 6149 girls and 4620 boys from all over the United States who were 9 to 14 years old in 1996. All returned questionnaires in the fall of 1996 and a year later in 1997. Each child provided his or her current height and weight and a detailed assessment of typical past-year dietary intakes, physical activities, and recreational inactivities (TV, videos/VCR, and video/computer games).

Methods.  Our hypotheses were that physical activity and dietary fiber intake are negatively correlated with annual changes in adiposity and that recreational inactivity (TV/videos/games), caloric intake, and dietary fat intake are positively correlated with annual changes in adiposity. Separately for boys and girls, we performed regression analysis of 1-year change in body mass index (BMI; kg/m2). All hypothesized factors were in the model simultaneously with several adjustment factors.

Results.  Larger increases in BMI from 1996 to 1997 were among girls who reported higher caloric intakes (.0061 ± .0026 kg/m2 per 100 kcal/day; beta  ± standard error), less physical activity (-.0284 ± .0142 kg/m2/hour/day) and more time with TV/videos/games (.0372 ± .0106 kg/m2/hour/day) during the year between the 2 BMI assessments. Larger BMI increases were among boys who reported more time with TV/videos/games (.0384 ± .0101) during the year. For both boys and girls, a larger rise in caloric intake from 1996 to 1997 predicted larger BMI increases (girls: .0059 ± .0027 kg/m2 per increase of 100 kcal/day; boys: .0082 ± .0030). No significant associations were noted for energy-adjusted dietary fat or fiber.

Conclusions.  For both boys and girls, a 1-year increase in BMI was larger in those who reported more time with TV/videos/games during the year between the 2 BMI measurements, and in those who reported that their caloric intakes increased more from 1 year to the next. Larger year-to-year increases in BMI were also seen among girls who reported higher caloric intakes and less physical activity during the year between the 2 BMI measurements. Although the magnitudes of these estimated effects were small, their cumulative effects, year after year during adolescence, would produce substantial gains in body weight. Strategies to prevent excessive caloric intakes, to decrease time with TV/videos/games, and to increase physical activity would be promising as a means to prevent obesity.  Key words:  physical activity, gym class, inactivity, television, videos, video/computer games, energy intake, dietary fat, dietary fiber, body mass index, adiposity, obesity, weight change, preadolescence, adolescence, longitudinal.




This article has been cited by other articles:


Home page
 J Am Board Fam MedHome page
M. N. Lutfiyya, R. Garcia, C. M. Dankwa, T. Young, and M. S. Lipsky
Overweight and Obese Prevalence Rates in African American and Hispanic Children: An Analysis of Data from the 2003-2004 National Survey of Children's Health
J Am Board Fam Med, May 1, 2008; 21(3): 191 - 199.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Public HealthHome page
L. E. Thorpe, D. G. List, T. Marx, L. May, S. D. Helgerson, and T. R. Frieden
Childhood Obesity in New York City Elementary School Students
Am J Public Health, September 1, 2004; 94(9): 1496 - 1500.
[Abstract] [Full Text] [PDF]

Home page
 PediatricsHome page
M. W. Gillman, S. Rifas-Shiman, C. S. Berkey, A. E. Field, and G. A. Colditz
Maternal Gestational Diabetes, Birth Weight, and Adolescent Obesity
Pediatrics, March 1, 2003; 111(3): e221 - 226.
[Abstract] [Full Text] [PDF]