RESEARCH ARTICLE
Comparison of Accuracy Among Pedometers from Five Japanese Manufacturers
So Osawa1, *, Hisaaki Tabuchi1, Kenichi Nemoto2, Shuhei Tokimasa1, Shotaro Misaki1, Masao Okuhara3, Koji Terasawa4
Article Information
Identifiers and Pagination:
Year: 2013Volume: 6
First Page: 56
Last Page: 61
Publisher ID: TOSSJ-6-56
DOI: 10.2174/1875399X01306010056
Article History:
Received Date: 15/05/2013Revision Received Date: 05/09/2013
Acceptance Date: 20/09/2013
Electronic publication date: 31/10/2013
Collection year: 2013
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
The reliability of commercially available pedometers is not known in detail. Therefore, the present study examines the accuracy and reliability of the FS500 (Acos), HJ301 (Omron), EX700 (Yamax), FB727 (Tanita) and TW600 (Citizen) pedometers to count steps and measure energy expenditure at various walking speeds. Twenty individuals (age, 32.5 ± 15.3 years; body mass index, 22.0 ± 1.6 kg/m2) walked at three speeds for 6 min. Step-counts and energy expenditure determined by each pedometer were compared with actual values. All five pedometers accurately measured steps at all speeds, but tended to underestimate expended calories to within 50% of the actual amount of energy expenditure. The correlation coefficients (R) between actual energy expenditure and pedometer values were between 0.74 and 0.87. Thus, feedback about energy expenditure is somewhat inaccurate. In contrast, step counts are very accurate, and thus pedometers are useful tools with which to indicate daily exercise levels.
