Accuracy of estimating step counts and intensity using accelerometers in older people with or without assistive devices

Jonghoon Park, Kazuko Ishikawa-Takata, Sachiko Tanaka, Kyoko Bessyo, Shigeho Tanaka, Toshihide Kimura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The purpose of this study was to examine the accuracy of uni- and triaxial accelerometers in monitoring step counts and gait intensity in older people who did or did not use an assistive device. Forty-nine healthy and frail older adults wore uniaxial (Lifecorder, Suzuken Co. Ltd.) and triaxial accelerometers (Activity Monitor, Matsushita Electronic Works, Ltd., and Active Style Pro, Omron Healthcare Co., Ltd.) during three trials at different gait speeds. All accelerometers gave relatively accurate step counts for healthy older participants compared with direct observation; however, the error was greater for frail older people with assistive devices. Gait intensity detection error was unaffected by gait speed. Among frail older people with assistive devices, the gait intensity error was smaller than for step count error. To accurately assess the steps walked or the gait intensity among frail older people using assistive devices, more study is needed on these groups of participants.

Original languageEnglish
Pages (from-to)41-50
Number of pages10
JournalJournal of Aging and Physical Activity
Volume25
Issue number1
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Accelerometers
  • Assistive device
  • Frail
  • Gait intensity
  • Older
  • Step counts

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation
  • Gerontology
  • Geriatrics and Gerontology

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