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Moving forward with backward compatibility: translating wrist accelerometer data

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dc.contributor.authorRowlands, A.V.
dc.contributor.authorCliff, D.P.
dc.contributor.authorFairclough, S.J.
dc.contributor.authorBoddy, L.M.
dc.contributor.authorOlds, T.S.
dc.contributor.authorParfitt, G.
dc.contributor.authorNoonan, R.J.
dc.contributor.authorDowns, S.J.
dc.contributor.authorKnowles, Z.R.
dc.contributor.authorBeets, M.W.
dc.date.issued2016
dc.descriptionData source: Supplemental digital content, http://links.lww.com/MSS/A716
dc.description.abstractPurpose This study aimed to provide a means for calibrating raw acceleration data from wrist-worn accelerometers in relation to past estimates of children's moderate-to-vigorous physical activity (MVPA) from a range of cut points applied to hip-worn ActiGraph data. Methods This is a secondary analysis of three studies with concurrent 7-d accelerometer wear at the wrist (GENEActiv) and hip (ActiGraph) in 238 children age 9-12 yr. The time spent above acceleration (ENMO) thresholds of 100, 150, 200, 250, 300, 350, and 400 mg from wrist acceleration data (≤5-s epoch) was calculated for comparison with MVPA estimated from widely used children's hip-worn ActiGraph MVPA cut points (Freedson/Trost, 1100 counts per minute; Pate, 1680 counts per minute; Evenson, 2296 counts per minute; Puyau, 3200 counts per minute) with epochs of ≤5, 15, and 60 s. Results The optimal ENMO thresholds for alignment with MVPA estimates from ActiGraph cut points determined from 70% of the sample and cross validated with the remaining 30% were as follows: Freedson/Trost = ENMO 150+ mg, irrespective of ActiGraph epoch (intraclass correlation [ICC] ≥ 0.65); Pate = ENMO 200+ mg, irrespective of ActiGraph epoch (ICC ≥ 0.67); Evenson = ENMO 250+ mg for ≤5- and 15-s epochs (ICC ≥ 0.69) and ENMO 300+ mg for 60-s epochs (ICC = 0.73); Puyau = ENMO 300+ mg for ≤5-s epochs (ICC = 0.73), ENMO 350+ mg for 15-s epochs (ICC = 0.73), and ENMO 400+ mg for 60-s epochs (ICC = 0.65). Agreement was robust with cross-validation ICC = 0.62-0.71 and means within 7.8% ± 4.9% of MVPA estimates from ActiGraph cut points, except Puyau 60-s epochs (ICC = 0.42). Conclusion Incremental ENMO thresholds enable children's acceleration data measured at the wrist to be simply and directly compared, at a group level, with past estimates of MVPA from hip-worn ActiGraphs across a range of cut points.
dc.identifier.citationMedicine & Science in Sports & Exercise, 2016; 48(11):2142-2149
dc.identifier.doi10.1249/MSS.0000000000001015
dc.identifier.issn0195-9131
dc.identifier.issn1530-0315
dc.identifier.orcidParfitt, G. [0000-0002-5547-5797]
dc.identifier.urihttps://hdl.handle.net/11541.2/123475
dc.language.isoen
dc.publisherLippincott Williams & Wilkins
dc.relation.fundingARC DE140101588 Discovery Early Career Researcher Award
dc.relation.fundingUniversity of South Australia
dc.relation.fundingLiverpool John Moores University
dc.rightsCopyright 2016 American College of Sports Medicine
dc.source.urihttp://ovidsp.ovid.com/ovidweb.cgi?T=JS%26CSC=Y%26NEWS=N%26PAGE=fulltext%26AN=00005768-201611000-00009%26LSLINK=80%26D=ovft
dc.subjectphysical activity
dc.subjectchildren
dc.subjectMVPA
dc.subjectActiGraph
dc.subjectGENEActiv
dc.subjectcut point
dc.titleMoving forward with backward compatibility: translating wrist accelerometer data
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916105174601831

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