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Effects of the amount of exercise on body weight, body composition, and measures of central obesity: STRRIDE--a randomized controlled study.
Arch Intern Med. 2004 Jan 12; 164(1):31-9.AI

Abstract

BACKGROUND

Obesity is a major health problem due, in part, to physical inactivity. The amount of activity needed to prevent weight gain is unknown.

OBJECTIVE

To determine the effects of different amounts and intensities of exercise training.

DESIGN

Randomized controlled trial (February 1999-July 2002).

SETTING AND PARTICIPANTS

Sedentary, overweight men and women (aged 40-65 years) with mild to moderate dyslipidemia were recruited from Durham, NC, and surrounding communities.

INTERVENTIONS

Eight-month exercise program with 3 groups: (1) high amount/vigorous intensity (calorically equivalent to approximately 20 miles [32.0 km] of jogging per week at 65%-80% peak oxygen consumption); (2) low amount/vigorous intensity (equivalent to approximately 12 miles [19.2 km] of jogging per week at 65%-80%), and (3) low amount/moderate intensity (equivalent to approximately 12 miles [19.2 km] of walking per week at 40%-55%). Subjects were counseled not to change their diet and were encouraged to maintain body weight.

MAIN OUTCOME MEASURES

Body weight, body composition (via skinfolds), and waist circumference.

RESULTS

Of 302 subjects screened, 182 met criteria and were randomized and 120 completed the study. There was a significant (P<.05) dose-response relationship between amount of exercise and amount of weight loss and fat mass loss. The high-amount/vigorous-intensity group lost significantly more body mass (in mean [SD] kilograms) and fat mass (in mean [SD] kilograms) (-2.9 [2.8] and -4.8 [3.0], respectively) than the low-amount/moderate-intensity group (-0.9 [1.8] and -2.0 [2.6], respectively), the low-amount/vigorous-intensity group (-0.6 [2.0] and -2.5 [3.4], respectively), and the controls (+1.0 [2.1] and +0.4 [3.0], respectively). Both low-amount groups had significantly greater improvements than controls but were not different from each other. Compared with controls, all exercise groups significantly decreased abdominal, minimal waist, and hip circumference measurements. There were no significant changes in dietary intake for any group.

CONCLUSIONS

In nondieting, overweight subjects, the controls gained weight, both low-amount exercise groups lost weight and fat, and the high-amount group lost more of each in a dose-response manner. These findings strongly suggest that, absent changes in diet, a higher amount of activity is necessary for weight maintenance and that the positive caloric imbalance observed in the overweight controls is small and can be reversed by a modest amount of exercise. Most individuals can accomplish this by walking 30 minutes every day.

Authors+Show Affiliations

Divisions of Cardiology, Geriatric Medicine, and General Internal Medicine, Department of Medicine, Duke Center for Living, Center for Health Policy Research, Durham, NC 27710, USA. Cris.Slentz@duke.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

14718319

Citation

Slentz, Cris A., et al. "Effects of the Amount of Exercise On Body Weight, Body Composition, and Measures of Central Obesity: STRRIDE--a Randomized Controlled Study." Archives of Internal Medicine, vol. 164, no. 1, 2004, pp. 31-9.
Slentz CA, Duscha BD, Johnson JL, et al. Effects of the amount of exercise on body weight, body composition, and measures of central obesity: STRRIDE--a randomized controlled study. Arch Intern Med. 2004;164(1):31-9.
Slentz, C. A., Duscha, B. D., Johnson, J. L., Ketchum, K., Aiken, L. B., Samsa, G. P., Houmard, J. A., Bales, C. W., & Kraus, W. E. (2004). Effects of the amount of exercise on body weight, body composition, and measures of central obesity: STRRIDE--a randomized controlled study. Archives of Internal Medicine, 164(1), 31-9.
Slentz CA, et al. Effects of the Amount of Exercise On Body Weight, Body Composition, and Measures of Central Obesity: STRRIDE--a Randomized Controlled Study. Arch Intern Med. 2004 Jan 12;164(1):31-9. PubMed PMID: 14718319.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of the amount of exercise on body weight, body composition, and measures of central obesity: STRRIDE--a randomized controlled study. AU - Slentz,Cris A, AU - Duscha,Brian D, AU - Johnson,Johanna L, AU - Ketchum,Kevin, AU - Aiken,Lori B, AU - Samsa,Gregory P, AU - Houmard,Joseph A, AU - Bales,Connie W, AU - Kraus,William E, PY - 2004/1/14/pubmed PY - 2004/3/16/medline PY - 2004/1/14/entrez SP - 31 EP - 9 JF - Archives of internal medicine JO - Arch Intern Med VL - 164 IS - 1 N2 - BACKGROUND: Obesity is a major health problem due, in part, to physical inactivity. The amount of activity needed to prevent weight gain is unknown. OBJECTIVE: To determine the effects of different amounts and intensities of exercise training. DESIGN: Randomized controlled trial (February 1999-July 2002). SETTING AND PARTICIPANTS: Sedentary, overweight men and women (aged 40-65 years) with mild to moderate dyslipidemia were recruited from Durham, NC, and surrounding communities. INTERVENTIONS: Eight-month exercise program with 3 groups: (1) high amount/vigorous intensity (calorically equivalent to approximately 20 miles [32.0 km] of jogging per week at 65%-80% peak oxygen consumption); (2) low amount/vigorous intensity (equivalent to approximately 12 miles [19.2 km] of jogging per week at 65%-80%), and (3) low amount/moderate intensity (equivalent to approximately 12 miles [19.2 km] of walking per week at 40%-55%). Subjects were counseled not to change their diet and were encouraged to maintain body weight. MAIN OUTCOME MEASURES: Body weight, body composition (via skinfolds), and waist circumference. RESULTS: Of 302 subjects screened, 182 met criteria and were randomized and 120 completed the study. There was a significant (P<.05) dose-response relationship between amount of exercise and amount of weight loss and fat mass loss. The high-amount/vigorous-intensity group lost significantly more body mass (in mean [SD] kilograms) and fat mass (in mean [SD] kilograms) (-2.9 [2.8] and -4.8 [3.0], respectively) than the low-amount/moderate-intensity group (-0.9 [1.8] and -2.0 [2.6], respectively), the low-amount/vigorous-intensity group (-0.6 [2.0] and -2.5 [3.4], respectively), and the controls (+1.0 [2.1] and +0.4 [3.0], respectively). Both low-amount groups had significantly greater improvements than controls but were not different from each other. Compared with controls, all exercise groups significantly decreased abdominal, minimal waist, and hip circumference measurements. There were no significant changes in dietary intake for any group. CONCLUSIONS: In nondieting, overweight subjects, the controls gained weight, both low-amount exercise groups lost weight and fat, and the high-amount group lost more of each in a dose-response manner. These findings strongly suggest that, absent changes in diet, a higher amount of activity is necessary for weight maintenance and that the positive caloric imbalance observed in the overweight controls is small and can be reversed by a modest amount of exercise. Most individuals can accomplish this by walking 30 minutes every day. SN - 0003-9926 UR - https://www.unboundmedicine.com/medline/citation/14718319/Effects_of_the_amount_of_exercise_on_body_weight_body_composition_and_measures_of_central_obesity:_STRRIDE__a_randomized_controlled_study_ L2 - https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/10.1001/archinte.164.1.31 DB - PRIME DP - Unbound Medicine ER -