Aerobic exercise alone results in clinically significant weight loss for men and women: Midwest Exercise Trial-2
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Issue Date
2013-03Author
Donnelly, Joseph E.
Honas, Jeffery J.
Smith, Bryan K.
Mayo, Matthew S.
Gibson, Cheryl A.
Sullivan, Debra K.
Lee, Jaehoon
Herrmann, Stephen D.
Lambourne, Kate
Washburn, Rik A.
Publisher
Wiley
Type
Article
Article Version
Scholarly/refereed, author accepted manuscript
Metadata
Show full item recordAbstract
Exercise is recommended by public health agencies for weight management; however, the role of exercise is generally considered secondary to energy restriction. Few studies exist that have verified completion of exercise, measured the energy expenditure of exercise, and prescribed exercise with equivalent energy expenditure across individuals and genders. OBJECTIVE The objective of this study was to evaluate aerobic exercise, without energy restriction, on weight loss in sedentary overweight and obese men and women. DESIGN AND METHODS This investigation was a randomized, controlled, efficacy trial in 141 overweight and obese participants (body mass index, 31.0 ± 4.6 kg/m2; age 22.6 ± 3.9 years). Participants were randomized (2:2:1 ratio) to exercise at either 400 kcal/session or 600 kcal/session or to a non-exercise control. Exercise was supervised, 5 days/week, for 10 months. All participants were instructed to maintain usual ad libitum diets. Due to the efficacy design, completion of ≥ 90% of exercise sessions was an a priori definition of per protocol, and these participants were included in the analysis. RESULTS Weight loss from baseline to 10 months for the 400 and 600 kcal/session groups was 3.9 ± 4.9kg (4.3%) and 5.2 ± 5.6kg (5.7%), respectively compared to weight gain for controls of 0.5 ± 3.5kg (0.5%) (p<0.05). Differences for weight loss from baseline to 10 months between the exercise groups and differences between men and women within groups were not statistically significant. CONCLUSIONS Supervised exercise, with equivalent energy expenditure, results in clinically significant weight loss with no significant difference between men and women.
Description
This is the peer reviewed version of the following article: Donnelly, J. E., Honas, J. J., Smith, B. K., Mayo, M. S., Gibson, C. A., Sullivan, D. K., Lee, J., Herrmann, S. D., Lambourne, K. and Washburn, R. A. (2013), Aerobic exercise alone results in clinically significant weight loss for men and women: Midwest exercise trial 2. Obesity, 21: E219–E228. doi:10.1002/oby.20145, which has been published in final form at http://doi.org/10.1002/oby.20145. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
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Citation
Donnelly, J. E., Honas, J. J., Smith, B. K., Mayo, M. S., Gibson, C. A., Sullivan, D. K., Lee, J., Herrmann, S. D., Lambourne, K. and Washburn, R. A. (2013), Aerobic exercise alone results in clinically significant weight loss for men and women: Midwest exercise trial 2. Obesity, 21: E219–E228. doi:10.1002/oby.20145
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