Accuracy of a smartphone pedometer application according to different speeds and mobile phone locations in a laboratory context

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Version: Final published version
Serval ID
serval:BIB_0AD3116F38FE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Accuracy of a smartphone pedometer application according to different speeds and mobile phone locations in a laboratory context
Journal
Journal of Exercise Science & Fitness
Author(s)
Presset B., Laurenczy B., Malatesta D., Barral J.
ISSN
1728-869X
Publication state
Published
Issued date
08/2018
Volume
16
Number
2
Pages
43-48
Language
english
Abstract
Background - The purpose of this study was to compare the accuracy of a smartphone application and a mechanical pedometer for step counting at different walking speeds and mobile phone locations in a laboratory context.
Methods - Seventeen adults wore an iPphone6© with Runtastic Pedometer© application (RUN), at 3 different locations (belt, arm, jacket) and a pedometer (YAM) at the waist. They were asked to walk on an instrumented treadmill (reference) at various speeds (2, 4 and 6 km/h).
Results - RUN was more accurate than YAM at 2 km/h (p < 0.05) and at 4 km/h (p = 0.03). At 6 km/h the two devices were equally accurate. The precision of YAM increased with speed (p < 0.05), while for RUN, the results were not significant but showed a trend (p = 0.051). Surprisingly, YAM underestimates the number of step by 60.5% at 2 km/h. The best accurate step counting (0.7% mean error) was observed when RUN is attached to the arm and at the highest speed.
Conclusions - RUN pedometer application could be recommended mainly for walking sessions even for low walking speed. Moreover, our results confirm that the smartphone should be strapped close to the body to discriminate steps from noise by the accelerometers (particularly at low speed).
Keywords
Measurement, Pedometry, Physical activity, Public health
Web of science
Open Access
Yes
Create date
12/10/2018 23:20
Last modification date
20/08/2019 13:32
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