Document Detail

Assessment of minute-by-minute stepping rate of physical activity under free-living conditions in female adults.
MedLine Citation:
PMID:  21664136     Owner:  NLM     Status:  Publisher    
BACKGROUND: The minute-by-minute stepping rate (MMSR) is a unique index of the walking speed. The MMSR under free-living conditions remains unclear. PURPOSE: The purpose of the present investigation was to clarify the physical activity (PA) levels based on MMSR under free-living conditions. METHODS: A total of 85 female volunteers, age from 21 to 91 year, wore a pedometer with a uni-axial accelerometer (Lifecorder, Kenz, Japan) for 7 days consecutively in order to determine the number of steps, the intensity of PA (light intensity PA; LPA, moderate intensity PA; MPA, and vigorous intensity PA; VPA), and the MMSR. Thereafter, the daily time spent in PA at <100, 100 to 129, and 130 stepsmin(-1) (minday(-1)) was calculated. All experiments were conducted in March 2007. RESULTS: The number of steps, the time spent in LPA, MPA, VPA, PA at <100, 100 to 129, and 130 stepsmin(-1) were 9275±3453 stepsday(-1), 71±25minday(-1), 34±22minday(-1), 4±6minday(-1), 295±88minday(-1), 16±12minday(-1), and 4±6minday(-1). The time spent in PA at <100 stepsmin(-1) positively associated with age (p<0.05). The time spent in PA at 100 to 129 stepsmin(-1) negatively associated with age (p<0.01). CONCLUSION: The time spent in PA at <130 of stepsmin(-1) MMSR differs across different age-groups under free-living conditions in female adults. The clinical significance with regards to the age-associated changes in MMSR remains unclear.
Makoto Ayabe; Junichiro Aoki; Hideaki Kumahara; Hiroaki Tanaka
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-8
Journal Detail:
Title:  Gait & posture     Volume:  -     ISSN:  1879-2219     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier B.V. All rights reserved.
School of Health and Sport Science, Juntendo University, Chiba, Japan; Faculty of Sport and Health Science, Fukuoka University, Fukuoka, Japan.
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