| Effects of progressive resistance training on body composition in frail older adults: results of a randomized, controlled trial. | |
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MedLine Citation:
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PMID: 16339329 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Progressive resistance exercise training (PRT) has been shown to increase muscle strength and fat-free mass (FFM) in elderly persons. Limited information is available regarding the effects of PRT on lean and fat mass in frail elderly persons. METHODS: Ninety-one community-dwelling sedentary men and women, 78 years and older with physical frailty (defined using standardized objective criteria) were enrolled in a 9-month trial of exercise training (ET). Physical frailty was defined as having 2 of the 3 following criteria: modified Physical Performance Test score between 18 and 32, peak aerobic power between 10 and 18 ml/kg/min, or self-report of difficulty or assistance with two instrumental activities of daily living or one basic activity of daily living. Participants were randomly assigned to either a control (CTL) group that performed a low intensity home exercise program or a supervised ET group that performed 3 months of low intensity exercise and 3 months of PRT. RESULTS: After completion of PRT, ET participants had greater improvements than did CTL participants in maximal voluntary force production for knee extension (mean Delta +5.3 +/- 13 ft/lb vs +1.1 +/- 11 ft/lb, p =.05), measured using isokinetic dynamometry. Total body FFM (measured using dual energy x-ray absorptiometry) increased in the ET group, but not in the CTL group (mean Delta +0.84 +/- 1.4 kg vs +0.01 +/- 1.5 kg, p =.005). Total, trunk, intra-abdominal, and subcutaneous fat mass (measured using dual energy x-ray absorptiometry and (1)H-magnetic resonance imaging) did not change in response to PRT. CONCLUSIONS: Three months of supervised PRT induced improvements in maximal voluntary thigh muscle strength and whole body FFM in frail, community-dwelling elderly women and men. This supervised exercise program may not be sufficient to reduce whole-body or intra-abdominal fat area in this population. |
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Authors:
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Ellen F Binder; Kevin E Yarasheski; Karen Steger-May; David R Sinacore; Marybeth Brown; Kenneth B Schechtman; John O Holloszy |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The journals of gerontology. Series A, Biological sciences and medical sciences Volume: 60 ISSN: 1079-5006 ISO Abbreviation: J. Gerontol. A Biol. Sci. Med. Sci. Publication Date: 2005 Nov |
Date Detail:
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Created Date: 2005-12-12 Completed Date: 2006-01-24 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 9502837 Medline TA: J Gerontol A Biol Sci Med Sci Country: United States |
Other Details:
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Languages: eng Pagination: 1425-31 Citation Subset: AIM; IM |
Affiliation:
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Division of Geriatrics and Nutritional Sciences, Washington University School of Medicine, 4488 Forest Park Blvd., Suite 201, St. Louis, MO 63108, USA. ebinder@im.wustl.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Body Composition* Female Frail Elderly* Humans Male Muscle, Skeletal / physiology Weight Lifting* |
| Grant Support | |
ID/Acronym/Agency:
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5-M01 RR00036/RR/NCRR NIH HHS; P01-AG13629/AG/NIA NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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