Convergent Validity of ActiGraph and Actical Accelerometers for Estimating Physical Activity in Adults

Simple item page
aut.relation.issue6en_NZ
aut.relation.journalPLoS ONEen_NZ
aut.relation.volume13en_NZ
dark.contributor.authorDuncan, Sen_NZ
dark.contributor.authorStewart, Ten_NZ
dark.contributor.authorSchneller, MBen_NZ
dark.contributor.authorGodbole, Sen_NZ
dark.contributor.authorCain, Ken_NZ
dark.contributor.authorKerr, Jen_NZ
dc.date.accessioned2018-10-31T01:59:17Z
dc.date.available2018-10-31T01:59:17Z
dc.date.copyright2018-06-01en_NZ
dc.date.issued2018-06-01en_NZ
dc.description.abstractPurpose: The aim of the present study was to examine the convergent validity of two commonly-used accelerometers for estimating time spent in various physical activity intensities in adults. Methods: The sample comprised 37 adults (26 males) with a mean (SD) age of 37.6 (12.2) years from San Diego, USA. Participants wore ActiGraph GT3X+ and Actical accelerometers for three consecutive days. Percent agreement was used to compare time spent within four physical activity intensity categories under three counts per minute (CPM) threshold protocols: (1) using thresholds developed specifically for each accelerometer, (2) applying ActiGraph thresholds to regression-rectified Actical CPM data, and (3) developing new 'optimal' Actical thresholds. Results: Using Protocol 1, the Actical estimated significantly less time spent in light (-16.3%), moderate (-2.8%), and vigorous (-0.4%) activity than the ActiGraph, but greater time spent sedentary (+20.5%). Differences were slightly more pronounced when the low frequency extension filter on the ActiGraph was enabled. The two adjustment methods (Protocols 2 and 3) improved agreement in this sample. Conclusions: Our findings show that ActiGraph and Actical accelerometers provide significantly different estimates of time spent in various physical activity intensities. Regression and threshold adjustment were able to reduce these differences, although some level of non-agreement persisted. Researchers should be aware of the inherent limitations of count-based physical activity assessment when reporting and interpreting study findings.en_NZ
dc.identifier.citationPLoS ONE 13 (6): e0198587. https://doi.org/10.1371/journal.pone.0198587
dc.identifier.doi10.1371/journal.pone.0198587en_NZ
dc.identifier.issn1932-6203en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/11920
dc.publisherPLoS
dc.relation.urihttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0198587#ack
dc.rights© 2018 Duncan et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.rights.accessrightsOpenAccessen_NZ
dc.titleConvergent Validity of ActiGraph and Actical Accelerometers for Estimating Physical Activity in Adultsen_NZ
dc.typeJournal Article
pubs.elements-id339007
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Health & Environmental Science
pubs.organisational-data/AUT/Health & Environmental Science/Sports & Recreation
pubs.organisational-data/AUT/Health & Environmental Science/SPRINZ
pubs.organisational-data/AUT/PBRF
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences/HS Sports & Recreation 2018 PBRF
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Convergent validity of ActiGraph and Actical accelerometers for estimating physical activity in adults.pdf
Size:
1.83 MB
Format:
Adobe Portable Document Format
Description:
Journal article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
AUT Grant of Licence for Tuwhera Aug 2018.pdf
Size:
276.29 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
School of Sport and Recreation