Comparability of Measured Acceleration from Accelerometry-Based Activity Monitors.
Background: Accelerometers that provide triaxial measured acceleration data are now available. However, equivalence of output between brands cannot be assumed and testing is necessary to determine whether features of the acceleration signal are interchangeable. Purpose: This study aimed to establish...
| Publicado en: | Medicine & Science in Sports & Exercise Vol. 47; no. 1; pp. 201 - 211 |
|---|---|
| Autores principales: | , , , , , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
Jan2015
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103860754&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103860754 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01959131 4DP jtl: Medicine & Science in Sports & Exercise issn: 01959131 maglogo: N pubinfo: dt: Jan2015 vid: 47 iid: 1 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 103860754 100030775 10.1249/MSS.0000000000000394 NLM24870577 103860754 ppf: 201 ppct: 10 formats: tig: atl: Comparability of Measured Acceleration from Accelerometry-Based Activity Monitors. aug: au: Rowlands, Alex V. Fraysse, Francois Catt, Mike Stiles, Victoria H. Stanley, Rebecca M. Eston, Roger G. Olds, Tim S. affil: Health and Use of Time Group, Sansom Institute for Health Research, Division of Health Sciences, University of South Australia, Adelaide, AUSTRALIA; Exercise for Health and Human Performance Group, Sansom Institute for Health Research, Division of Health Sciences, University of South Australia, Adelaide, AUSTRALIA sug: subj: Physical Activity Accelerometry Human Equipment Design Female Adult Body Height Body Weight United Kingdom Questionnaires Descriptive Statistics Repeated Measures Analysis of Variance Post Hoc Analysis Adult: 19-44 years Female ab: Background: Accelerometers that provide triaxial measured acceleration data are now available. However, equivalence of output between brands cannot be assumed and testing is necessary to determine whether features of the acceleration signal are interchangeable. Purpose: This study aimed to establish the equivalence of output between two brands of monitor in a laboratory and in a free-living environment. Methods: For part 1, 38 adults performed nine laboratory-based activities while wearing an ActiGraph GT3X+ and GENEActiv (Gravity Estimator of Normal Everyday Activity) at the hip. For part 2, 58 children age 10-12 yr wore a GT3X+ and GENEActiv at the hip for 7 d in a free-living setting. Results: For part 1, the magnitude of time domain features from the GENEActiv was greater than that from the GT3X+. However, frequency domain features compared well, with perfect agreement of the dominant frequency for 97%-100% of participants for most activities. For part 2, mean daily acceleration measured by the two brands was correlated (r = 0.93, P < 0.001, respectively) but the magnitude was approximately 15% lower for the GT3X+ than that for the GENEActiv at the hip. Conclusions: Frequency domain-based classification algorithms should be transferable between monitors, and it should be possible to apply time domain-based classification algorithms developed for one device to the other by applying an affine conversion on the measured acceleration values. The strong relation between accelerations measured by the two brands suggests that habitual activity level and activity patterns assessed by the GENE and GT3X+ may compare well if analyzed appropriately. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|