Can accelerometry be used to discriminate levels of activity?

P. Hendrick, Melanie L Bell, P. J. Bagge, S. Milosavljevic

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The aims of this study were to investigate the associations between an activity logbook and the RT3 accelerometer and to assess whether the RT3 can discriminate activity levels in healthy adults. Ten participants completed two trials wearing an RT3 accelerometer over a 4-6 h period and completed a detailed activity log. Results showed a poor correlation between the RT3 in moderate activities (r = 0.22) in comparison to low (r = 0.52) and hard (r = 0.70) from the logbook. A significant difference was found in average RT3 vector magnitude (VM) counts/min in each activity level (p < 0.0001). Discriminant analysis demonstrated that an RT3VM counts/min value of approximately 500 was found to have high sensitivity (88%), and specificity (88%) for discriminating between low and moderate activity levels from the logbook. This study found that accelerometry has the potential to discriminate activity levels in free living. This study is the first to investigate whether tri-axial accelerometry can discriminate different levels of free-living activity recorded in an activity logbook. The RT3 accelerometer can discriminate between low and moderate physical activities and offers a methodology that may be applicable to future research in occupational settings.

Original languageEnglish (US)
Pages (from-to)1019-1025
Number of pages7
JournalErgonomics
Volume52
Issue number8
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

Accelerometry
Accelerometers
Discriminant Analysis
Discriminant analysis
Exercise
Sensitivity and Specificity
discriminant analysis

Keywords

  • Activity measurement
  • Physical activity
  • Short-term free living
  • Tri-axial accelerometry

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Can accelerometry be used to discriminate levels of activity? / Hendrick, P.; Bell, Melanie L; Bagge, P. J.; Milosavljevic, S.

In: Ergonomics, Vol. 52, No. 8, 2009, p. 1019-1025.

Research output: Contribution to journalArticle

Hendrick, P, Bell, ML, Bagge, PJ & Milosavljevic, S 2009, 'Can accelerometry be used to discriminate levels of activity?', Ergonomics, vol. 52, no. 8, pp. 1019-1025. https://doi.org/10.1080/00140130902846464
Hendrick, P. ; Bell, Melanie L ; Bagge, P. J. ; Milosavljevic, S. / Can accelerometry be used to discriminate levels of activity?. In: Ergonomics. 2009 ; Vol. 52, No. 8. pp. 1019-1025.
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