| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Original Research Communication |
1 From the Departments of Nutrition Sciences (RLW, NMB, and PAZ) and Human Studies (GRH), and the Biostatistics Unit of the Comprehensive Cancer Center (RAD), the General Clinical Research Center (BED), and the Clinical Nutrition Research Center (RLW, GRH, and RAD), the University of Alabama at Birmingham.
Background: Although physical inactivity is believed to contribute to the rising prevalence of obesity, the role and magnitude of its contribution to weight gain are unknown.
Objective: We compared total free-living activity energy expenditure (AEE) and physical activity level in women successful and unsuccessful at maintaining a normal body weight.
Design: Premenopausal, generally sedentary women were studied at their normal weight and 1 y later after no intervention. Two groups were identified on the basis of extreme weight changes: maintainers (n = 27) had a weight gain of 
3% of their initial body weight ( 2 kg/y) and gainers (n = 20) had a weight gain of >10% (>6 kg/y). At baseline and follow-up, evaluations were conducted during 4 wk of diet-controlled, energy-balance conditions. Free-living AEE and physical activity were assessed with the use of doubly labeled water, exercise energy economy and muscle strength with the use of standardized exercise tests, and sleeping EE and substrate utilization with the use of chamber calorimetry.
Results: Maintainers lost a mean (±SD) of 0.5 ± 2.2 kg/y and gainers gained 9.5 ± 2.1 kg/y. Gainers had a lower AEE (P < 0.02), a lower physical activity level (P < 0.01), and less muscle strength (P < 0.001); these differences between groups remained significant from baseline to follow-up. Sleeping EE, exercise economy, and sleeping or 24-h substrate utilization were not significantly different between the 2 groups. A lower AEE in the gainers explained 
77% of their greater weight gain after 1 y.
Conclusion: The general US population should increase their daily physical activity levels to decrease the rising prevalence of obesity.
Key Words: Weight gain • obesity • physical activity • energy expenditure • muscle strength • fitness • premenopausal women
This article has been cited by other articles:
|
|
 |
|
  J. O. Hill Understanding and Addressing the Epidemic of Obesity: An Energy Balance Perspective Endocr. Rev., December 1, 2006; 27(7): 750 - 761. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. R. Hunter, D. E. Larson-Meyer, B. Sirikul, and B. R. Newcomer Muscle metabolic function and free-living physical activity J Appl Physiol, November 1, 2006; 101(5): 1356 - 1361. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. J. Sigal, G. P. Kenny, D. H. Wasserman, C. Castaneda-Sceppa, and R. D. White Physical Activity/Exercise and Type 2 Diabetes: A consensus statement from the American Diabetes Association. Diabetes Care, June 1, 2006; 29(6): 1433 - 1438. [Full Text] [PDF]
|
|
|
|
 |
|
 N. Vogels, E. C. Mariman, F. G Bouwman, A. D. Kester, K. Diepvens, and M. S Westerterp-Plantenga Relation of weight maintenance and dietary restraint to peroxisome proliferator-activated receptor {gamma}2, glucocorticoid receptor, and ciliary neurotrophic factor polymorphisms Am. J. Clinical Nutrition, October 1, 2005; 82(4): 740 - 746. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. O. Hill and H. R. Wyatt Role of physical activity in preventing and treating obesity J Appl Physiol, August 1, 2005; 99(2): 765 - 770. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. J. Sigal, G. P. Kenny, D. H. Wasserman, and C. Castaneda-Sceppa Physical Activity/Exercise and Type 2 Diabetes Diabetes Care, October 1, 2004; 27(10): 2518 - 2539. [Full Text] [PDF]
|
|
|
|
 |
|
 H. R. Bowles, S. J. FitzGerald, J. R. Morrow Jr., A. W. Jackson, and S. N. Blair Construct Validity of Self-reported Historical Physical Activity Am. J. Epidemiol., August 1, 2004; 160(3): 279 - 286. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. A. Slentz, B. D. Duscha, J. L. Johnson, K. Ketchum, L. B. Aiken, G. P. Samsa, J. A. Houmard, C. W. Bales, and W. E. Kraus Effects of the Amount of Exercise on Body Weight, Body Composition, and Measures of Central Obesity: STRRIDE--A Randomized Controlled Study Arch Intern Med, January 12, 2004; 164(1): 31 - 39. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. M Byrne, R. L Weinsier, G. R Hunter, R. Desmond, M. A Patterson, B. E Darnell, and P. A Zuckerman Influence of distribution of lean body mass on resting metabolic rate after weight loss and weight regain: comparison of responses in white and black women Am. J. Clinical Nutrition, June 1, 2003; 77(6): 1368 - 1373. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. N Gershoff Enhanced lipogenesis after fasting Am. J. Clinical Nutrition, November 1, 2002; 76(5): 1139 - 1140. [Full Text] [PDF]
|
|
|
|
|
|
G. R Hunter, R. L Weinsier, and N. M Byrne Reply to SN Gershoff Am. J. Clinical Nutrition, November 1, 2002; 76(5): 1140 - 1140. [Full Text] [PDF]
|
|
|
|
|
|
N. M Byrne, R. L Weinsier, and G. R Hunter Reply to MA Pereira et al Am. J. Clinical Nutrition, November 1, 2002; 76(5): 1141 - 1142. [Full Text] [PDF]
|
|
|
|
|
|
M. A Pereira, C. B Ebbeling, D. B Pawlak, M. M Leidig, and D. S Ludwig In search of a lifestyle prescription to control body weight Am. J. Clinical Nutrition, November 1, 2002; 76 (5): 1140 - 1141. [Full Text] [PDF]
|
|
|
|
|
|
H. R Wyatt and J. O Hill Let's get serious about promoting physical activity Am. J. Clinical Nutrition, March 1, 2002; 75(3): 449 - 450. [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
