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dc.contributor.authorWallen, Matthew P
dc.contributor.authorGomersall, Sjaan R
dc.contributor.authorKeating, Shelley E
dc.contributor.authorWisløff, Ulrik
dc.contributor.authorCoombes, Jeff S
dc.date.accessioned2020-06-25T08:33:43Z
dc.date.available2020-06-25T08:33:43Z
dc.date.created2016-12-02T11:07:52Z
dc.date.issued2016
dc.identifier.citationPLOS ONE. 2016, 11(5): e0154420en_US
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/11250/2659436
dc.description.abstractBackground Wrist-worn monitors claim to provide accurate measures of heart rate and energy expenditure. People wishing to lose weight use these devices to monitor energy balance, however the accuracy of these devices to measure such parameters has not been established. Aim To determine the accuracy of four wrist-worn devices (Apple Watch, Fitbit Charge HR, Samsung Gear S and Mio Alpha) to measure heart rate and energy expenditure at rest and during exercise. Methods Twenty-two healthy volunteers (50% female; aged 24 ± 5.6 years) completed ~1-hr protocols involving supine and seated rest, walking and running on a treadmill and cycling on an ergometer. Data from the devices collected during the protocol were compared with reference methods: electrocardiography (heart rate) and indirect calorimetry (energy expenditure). Results None of the devices performed significantly better overall, however heart rate was consistently more accurate than energy expenditure across all four devices. Correlations between the devices and reference methods were moderate to strong for heart rate (0.67–0.95 [0.35 to 0.98]) and weak to strong for energy expenditure (0.16–0.86 [-0.25 to 0.95]). All devices underestimated both outcomes compared to reference methods. The percentage error for heart rate was small across the devices (range: 1–9%) but greater for energy expenditure (9–43%). Similarly, limits of agreement were considerably narrower for heart rate (ranging from -27.3 to 13.1 bpm) than energy expenditure (ranging from -266.7 to 65.7 kcals) across devices. Conclusion These devices accurately measure heart rate. However, estimates of energy expenditure are poor and would have implications for people using these devices for weight loss.en_US
dc.language.isoengen_US
dc.publisherPublic Library of Science (PLOS)en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleAccuracy of heart rate watches: Implications for weight managementen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.volume11en_US
dc.source.journalPLOS ONEen_US
dc.source.issue5en_US
dc.identifier.doi10.1371/journal.pone.0154420
dc.identifier.cristin1407534
dc.description.localcodeCopyright: © 2016 Wallen 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.en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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