VALIDITY OF THREE HIP-WORN PEDOMETERS FOR STEP COUNTS IN A LABORATORY SETTING

Ayda Karaca; Necip Demirci; Sinem Hazır Aytar; Sema Can; Vedat Yılmaz; Evrim Ünver

doi:10.5114/hpc.2023.124086

eISSN: 2354-0265
ISSN: 2353-6942

Health Problems of Civilization Physical activity: diseases and issues recognized by the WHO

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vol. 17

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PHYSICAL ACTIVITY OF SOCIAL AND PROFESSIONAL GROUPS

abstract:

Original paper

VALIDITY OF THREE HIP-WORN PEDOMETERS FOR STEP COUNTS IN A LABORATORY SETTING

Ayda Karaca

¹

,

Necip Demirci

¹

,

Sinem Hazır Aytar

²

,

Sema Can

³

,

Vedat Yılmaz

⁴

,

Evrim Ünver

⁵

Division of Physical Activity and Health, Department of Recreation, Faculty of Sport Sciences, Hacettepe University, Ankara, Türkiye
Department of Exercise and Sport Sciences, Faculty of Health Sciences, Başkent University, Ankara, Türkiye
Department of Coaching Education, Faculty of Sport Sciences, Hitit University, Çorum, Türkiye
Division of Sports Biomechanics and Motor Control, Department of Exercise and Sport Sciences, Faculty of Sport Sciences, Hacettepe University, Ankara, Türkiye
Division of Movement and Training Sciences, Department of Exercise and Sport Sciences, Faculty of Sport Sciences, Hacettepe University, Türkiye

Health Prob Civil. 2023; 17(1): 76-83

DOI: https://doi.org/10.5114/hpc.2023.124086

Online publish date: 2023/01/24

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Background.
Objectively measuring physical activity with a functional and inexpensive device is important in large-scale health research. Therefore, this study aimed to determine the validity of the Omron HJ-321 (HJ-321), Omron GoSmart HJ-112 (HJ-112), and Yamax SW200 Digiwalker (YX) for measuring step counts (SC) obtained from the sum of different speeds in a laboratory setting.

Material and methods.
A total of 26 healthy males aged between 19 and 35 years (26.4±6.3 years) participated voluntarily. During the 10-minute treadmill protocol, the participants were asked to wear HJ-321 and HJ-112 pedometers on the right side and YX on both sides of their hips. The digital image processing code was written in MATLAB (R2013B) for calculating the actual step counts (ASC) with 100% accuracy. The SC for all the pedometers and ASC were recorded simultaneously.

Results.
HJ-112 and YX have a small Mean Absolute Percentage Error (MAPE) of <10%, while the HJ-321 showed a high MAPE of >10%. There was a significant correlation between the ASC and the HJ-112, and the YX worn both on right and left sides (respectively, ICC and 95%CI: 0.583 (0.069, 0.813); 0.638 (0.193, 0.838); 0.516 (-0.079, 0.783)). However, a significant correlation was not found for the HJ-321 (0.025 (-1.212, 0.570)).

Conclusions.
This study shows that the HJ-112 and YX on both sides are valid for measuring total step count during 10 minutes of walking and running in a laboratory setting.

keywords:

VALIDITY OF THREE HIP-WORN PEDOMETERS FOR STEP COUNTS IN A LABORATORY SETTING

Ayda Karaca 1 , Necip Demirci 1 , Sinem Hazır Aytar 2 , Sema Can 3 , Vedat Yılmaz 4 , Evrim Ünver 5

Omron HJ-321, Omron GoSmart HJ-112, Yamax SW200 Digiwalker, pedometer, validity, hip

Ayda Karaca

¹

,

Necip Demirci

¹

,

Sinem Hazır Aytar

²

,

Sema Can

³

,

Vedat Yılmaz

⁴

,

Evrim Ünver

⁵