Document Detail

Pedometer-determined step count guidelines for classifying walking intensity in a young ostensibly healthy population.
MedLine Citation:
PMID:  16485518     Owner:  NLM     Status:  MEDLINE    
PURPOSE: (a) To establish pedometer steps/min intensity categories (i.e., light, moderate, hard, very hard) for adults under controlled conditions, and (b) use these cut-points to ascertain the number of steps expected in 30 minutes of moderate intensity activity. METHODS: 25 men and 25 women, ages 18-39 years, performed 6-min exercise bouts at 3 treadmill speeds (4.8, 6.4, and 9.7 km/hr). Yamax SW-200 pedometers indicated steps, and steady-state VO2 was recorded. METs were calculated by dividing steady-state VO2 by 3.5 ml x kg(-1) x min(-1). Linear regression was used to quantify the relationships between steps/min and METs across all speeds. Ten participants (5 M, 5 F) were randomly selected from the original 50 and constituted a holdout sample for cross-validation purposes (i.e, comparing actual and predicted METs; paired t-test). RESULTS: The regression equation for males was: METs = -7.065 + (0.105 x steps/min) r2 = 0.803. For females it was: METs = -8.805 + (0.110 x steps/min) r2 = 0.830. Cross-validation was confirmed. CONCLUSIONS: Pedometer cut-points corresponding to minimal moderate intensity walking were 96 steps/min in men and 107 steps/min in women, or roughly 100 steps/min for both. This translates to approximately 3,000 steps in 30 min of moderate-intensity ambulatory activity for both genders.
Catrine Tudor-Locke; Susan B Sisson; Tracy Collova; Sarah M Lee; Pamela D Swan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Canadian journal of applied physiology = Revue canadienne de physiologie appliquée     Volume:  30     ISSN:  1066-7814     ISO Abbreviation:  Can J Appl Physiol     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2006-02-20     Completed Date:  2006-03-10     Revised Date:  2006-07-13    
Medline Journal Info:
Nlm Unique ID:  9306274     Medline TA:  Can J Appl Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  666-76     Citation Subset:  IM    
Dept of Exercise and Wellness, Arizona State University, Mesa 85212, USA.
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MeSH Terms
Calorimetry, Indirect
Oxygen Consumption
Walking* / physiology

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