Comparability of postural and physical activity metrics from different accelerometer brands worn on the thigh: data harmonization possibilities

Charlotte Edwardson, Ben Maylor, Nathan Dawkins, Tatiana Plekhanova, Alex Rowlands

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    The aim was to establish which postural and physical activity outcomes are comparable across different accelerometer brands worn on the thigh when processed using open-source methods. Twenty participants wore four accelerometers (Axivity, ActiGraph, activPAL, GENEActiv) for three free-living days. Postural and physical activity outputs (average acceleration, intensity gradient, intensity of the most active 30 min, 60 min, and 8 h) were generated. Postural outputs: Mean absolute percent errors (MAPEs) were low, reliability excellent, and equivalency within the 5% zone across all monitor pairings for sitting/lying and upright times, but not specific lying postures. Physical activity outputs: MAPEs were higher and reliability lower than for sitting/lying and upright time. However, the majority of the outcomes were within the 10% equivalency zone for Axivity/GENEActiv and Axivity/ActiGraph pairings. Total sitting/lying and upright times show strong potential for harmonization across studies utilizing different thigh-worn accelerometers. The majority of acceleration outcomes compare well for Axivity, GENEActiv, and ActiGraph.
    Original languageEnglish
    JournalMeasurement in Physical Education and Exercise Science
    Early online date20 Jun 2021
    DOIs
    Publication statusPublished - 2 Jan 2022

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