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The Choice of Pedometer Impacts on Daily Step Counts in Primary School Children under Free-Living Conditions

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  • Chiaki Tanaka

    (College of Health and Welfare, J. F. Oberlin University, Tokyo 194-0294, Japan)

  • Yuki Hikihara

    (Yuki Hikihara, Chiba Institute of Technology, Chiba 275-0023, Japan)

  • Shigeru Inoue

    (Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo 160-8402, Japan)

  • Shigeho Tanaka

    (Department of Nutrition and Metabolism, National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo 162-8636, Japan)

Abstract

Background : We examined whether daily step counts under free-living conditions differed among four types of pedometers used by primary school children. Methods : In Study one, we compared the Yamax SW-200 (widely used in research) and the Kenz Lifecorder (accelerometer-based pedometer) in 30 children (6–12 years). In Study two, after confirming good correlation between these devices, we used Kenz Lifecorder as the criterion device and compared it with the Yamasa EX-200 (pants pocket-type pedometer) and the Omron Active style Pro (accelerometer-based pedometer) among 48 (7–12 years) or 108 children (7–12 years). Results : In Study one, comparable mean step counts between pedometers were observed. The correlation was strong ( r = 0.91); the average difference between these two pedometers was +4.5%. In Study two, the average differences between Kenz Lifecorder and Yamasa EX-200 and Kenz Lifecorder and Omron Active style Pro were −7.9% and −18.2%, respectively, and those were not significantly equivalent according to the two one-sided-tests method. The correlations between Yamasa or Omron Active style Pro and Lifecorder were moderate and strong, respectively. Conclusions : The choice of pedometer had a substantial impact on step counts. A consensus on the appropriate pedometer for quantifying daily step counts is needed for evidence-based recommendations for health promotion.

Suggested Citation

  • Chiaki Tanaka & Yuki Hikihara & Shigeru Inoue & Shigeho Tanaka, 2019. "The Choice of Pedometer Impacts on Daily Step Counts in Primary School Children under Free-Living Conditions," IJERPH, MDPI, vol. 16(22), pages 1-10, November.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:22:p:4375-:d:285223
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    References listed on IDEAS

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    1. Yuki Hikihara & Chiaki Tanaka & Yoshitake Oshima & Kazunori Ohkawara & Kazuko Ishikawa-Takata & Shigeho Tanaka, 2014. "Prediction Models Discriminating between Nonlocomotive and Locomotive Activities in Children Using a Triaxial Accelerometer with a Gravity-removal Physical Activity Classification Algorithm," PLOS ONE, Public Library of Science, vol. 9(4), pages 1-11, April.
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