Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/22205
Title: | Accuracy of piezoelectric pedometer and accelerometer step counts |
Author: | Cruz, Joana Brooks, Dina Marques, Alda |
Keywords: | Actigraphy Dimensional measurement accuracy Exercise Walking |
Issue Date: | Apr-2017 |
Publisher: | Edizioni Minerva Medica |
Abstract: | This study aimed to: assess step-count accuracy of a piezoeletric pedometer (Yamax PW/EX-510), when worn at different body parts, and a triaxial accelerometer (GT3X+); compare device accuracy; and identify the preferred location(s) to wear a pedometer. METHODS: Sixty-three healthy adults (45.8±20.6 years old) wore 7 pedometers (neck, lateral right and left of the waist, front right and left of the waist, front pockets of the trousers) and 1 accelerometer (over the right hip), while walking 120m at slow, self-preferred/normal and fast paces. Steps were recorded. Participants identified their preferred location(s) to wear the pedometer. Absolute percent error (APE) and Bland and Altman (BA) method were used to assess device accuracy (criterion measure: manual counts) and BA method for device comparisons. RESULTS: Pedometer APE was below 3% at normal and fast paces despite wearing location, but higher at slow pace (4.5–9.1%). Pedometers were more accurate at the front waist and inside the pockets. Accelerometer APE was higher than pedometer APE (P<0.05); nevertheless, limits of agreement between devices were relatively small. Preferred wearing locations were inside the front right (n=25) and left (n=20) pockets of the trousers. CONCLUSION: Yamax PW/EX-510 pedometers may be preferable than GT3X+ accelerometers to count steps, as they provide more accurate results. These pedometers should be worn at the front right or left positions of the waist or inside the front pockets of the trousers. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/22205 |
DOI: | 10.23736/S0022-4707.16.06177-X |
ISSN: | 0022-4707 |
Appears in Collections: | ESSUA - Artigos Lab3R - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Cruz2016_Accuracy of piezoelectric pedometers and accelerometer.pdf | 437.43 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.