Journal
AMERICAN JOURNAL OF CLINICAL NUTRITION
Volume 89, Issue 1, Pages 19-26Publisher
OXFORD UNIV PRESS
DOI: 10.3945/ajcn.2008.26147
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Categories
Funding
- National Heart, Lung, and Blood Institute [N01-HC-95095, N01-HC-48047-48050, N01-HC-05187, N01-HC-48050]
- NCI [R01-CA12115, R01CA109831]
- NICHD [K01-HD044263]
- NIH [R01-AA12162]
- University of North Carolina (UNC)-CH Center [NIH P30-ES10126]
- UNC-CH Clinic Nutrition Research Center [NIH DK56350]
- Carolina Population Center
- University of Alabama at Birmingham [N01-HC-95095, N01-HC-48047]
- University of Minnesota [N01-HC-48048]
- Northwestern University [N01-HC-48049]
- Kaiser Foundation Research Institute
- DIVISION OF EPIDEMIOLOGY AND CLINICAL APPLICATIONS [N01HC005187, N01HC095095, N01HC048047, N01HC048050, N01HC048049, N01HC048048] Funding Source: NIH RePORTER
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH &HUMAN DEVELOPMENT [K01HD044263] Funding Source: NIH RePORTER
- NATIONAL CANCER INSTITUTE [R01CA012115, R01CA121152, R01CA109831] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES [P30DK056350] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES [P30ES010126] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE ON ALCOHOL ABUSE AND ALCOHOLISM [R01AA012162] Funding Source: NIH RePORTER
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Background: Although walking is the most popular leisure-time activity for adults, few long-term, longitudinal studies have examined the association between walking, an affordable and accessible form of physical activity, and weight gain. Objective: The objective was to evaluate the association between changes in leisure-time walking and weight gain over a 15-y period. Design: Prospective data from the Coronary Artery Risk Development in Young Adults (CARDIA) Study of 4995 men and women aged 18-30 y at baseline (1985-1986) from 4 US cities and reexamined 2, 5, 7, 10, and 15 y later. Sex-stratified, repeated-measures, conditional regression modeling with data from all 6 examination periods (n = 23,633 observations) was used to examine associations between walking and annualized 15-y weight change, with control for 15-y nonwalking physical activity, baseline weight (and their interaction), marital status, education, smoking, calorie intake, and baseline age, race, and field center. Results: Mean (+/- SE) baseline weights were 77.0 +/- 0.3 kg (men) and 66.2 +/- 0.3 kg (women), weight gain was approximate to 1 kg/ y, and the mean duration of walking at baseline was <15 min/d. After accounting for nonwalking physical activity, calorie intake, and other covariates, we found a substantial association between walking and annualized weight change; the greatest association was for those with a larger baseline weight. For example, for women at the 75th percentile of baseline weight, 0.5 h of walking/d was associated with 8 kg less weight gain over 15 y compared with women with no leisure time walking. Conclusion: Walking throughout adulthood may attenuate the longterm weight gain that occurs in most adults. Am J Clin Nutr 2009; 89: 19-26.
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