Document Detail

Pedometer indices for weekly physical activity recommendations in postmenopausal women.
MedLine Citation:
PMID:  16177618     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The aim of this study was to quantify pedometer-determined steps per day associated with 50, 100, and 150% of the current public health recommendation for weekly physical activity in sedentary postmenopausal women. METHODS: A sample of 111 women from the DREW (Dose Response to Exercise in Women) study provided data. We randomly assigned women into one of three exercise groups expending 4, 8, or 12 kcal(-1).kg(-1).wk(-1) (KKW). Participants exercised alternately on a treadmill and recumbent cycle ergometer for a 6-month training period. Only treadmill sessions done with zero grade, at slow to moderate speeds (48-97 m.min(-1)) were used in this analysis. We controlled intensity at a HR equivalent to 50% of VO(2peak). Participants wore pedometers at baseline and throughout the study to assess their free-living physical activity (steps.d(-1)) RESULTS: Baseline averages were <5400 steps.d(-1) for the 4-, 8-, and 12-KKW groups. During 6 months of exercise training, free-living step counts remained <5400 steps.d(-1) and did not significantly differ from baseline for each group. Average speeds and distances per exercise session were 2.7 +/- 0.4 mph, 1.2 +/- 0.2 miles (4 KKW), 2.6 +/- 0.4 mph, 2.2 +/- 0.4 miles (8 KKW), and 2.8 +/- 0.3 mph, 2.7 +/- 0.4 miles (12 KKW). This yielded 2771 (4 KKW), 5457 (8 KKW), and 6534 (12 KKW) steps per exercise session 3-4 d.wk(-1). CONCLUSIONS: Initially sedentary postmenopausal women can meet 50% (4 KKW), 100% (8 KKW), and 150% (12 KKW) of the current public health recommendation of weekly physical activity through planned moderate-intensity walking, accumulating an average of about 2800 (50%), 5500 (100%), and 6500 steps.d(-1) (150%) 3-4 d.wk(-1).
Alexander N Jordan; Gina M Jurca; Catrine Tudor Locke; Timothy S Church; Steven N Blair
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  37     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-22     Completed Date:  2006-02-06     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1627-32     Citation Subset:  IM; S    
The Cooper Institute Centers for Integrated Health Research, Center for Laboratory and Medical Research, Dallas, TX 75230, USA.
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MeSH Terms
Energy Metabolism / physiology
Ergometry / instrumentation,  standards*
Exercise / physiology
Exercise Therapy / methods,  standards*
Life Style
Middle Aged
Motor Activity / physiology*
Postmenopause / physiology*
Practice Guidelines as Topic*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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