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Cited by 386

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Comparison of pedometer and accelerometer measures of free-living physical activity

TUDOR-LOCKE, CATRINE, AINSWORTH, BARBARA E., THOMPSON, RAYMOND W., MATTHEWS, CHARLES E.·2002·Medicine & Science in Sports & Exercise
DOI 10.1097/00005768-200212000-00027
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Abstract

PURPOSE: The purpose of this investigation was 1) to evaluate agreement between dual-mode CSA accelerometer outputs and Yamax pedometer outputs assessed concurrently under free-living conditions; 2) to determine the relationship between pedometer-steps per day and CSA-time spent in inactivity and in light-, moderate-, and vigorous-intensity activities; and 3) to identify a value of pedometer-steps per day that corresponds with a minimum of 30 CSA-min x d(-1) of moderate ambulatory activity. METHODS: Data were analyzed from 52 participants (27 men, 25 women; mean age = 38.2 +/- 12.0 yr; mean BMI = 26.4 +/- 4.5 kg x m(-2)) who were enrolled in the International Physical Activity Questionnaire study and wore both motion sensors during waking hours for 7 consecutive days. RESULTS: Participants averaged 415.0+/-159.5 CSA-counts x min(-1) x d(-1), 357,601 +/- 138,425 CSA-counts x d(-1), 11,483 +/- 3,856 CSA-steps x d(-1), and 9,638 +/- 4,030 pedometer-steps x d(-1). There was a strong relationship between all CSA outputs and pedometer outputs (r = 0.74-0.86). The mean difference in steps detected between instruments was 1845+/-2116 steps x d(-1) (CSA > pedometer; t = 6.29, P < 0.0001). There were distinct differences (effect sizes >0.80) in mean CSA-time (min x d(-1)) in moderate and vigorous activity with increasing pedometer-determined activity quartiles; no differences were noted for inactivity or light activity. Approximately 33 CSA-min x d(-1) of moderate activity corresponded with 8000 pedometer-steps x d(-1). CONCLUSION: Differences in mean steps per day detected may be due to differences in set instrument sensitivity thresholds and/or attachment. Additional studies with different populations are needed to confirm a recommended number of steps per day associated with the duration and intensity of public health recommendations for ambulatory activity.

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Metadata

Authors
TUDOR-LOCKE, C., AINSWORTH, B. E., THOMPSON, R. W., & MATTHEWS, C. E.
Venue
Medicine & Science in Sports & Exercise
Publisher
Ovid Technologies (Wolters Kluwer Health)
Published
2002-12
Volume
34
Issue
12
Pages
2045-2051
ISSN
0195-9131 (ISSN-L)
DOI
10.1097/00005768-200212000-00027
OpenAlex
W2063323404
Cited by
386
References
5
FWCI
6.43
Type
journal article
Language
en
Open access
closed

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