PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Public Health Translational Medicine Sports Medicine Frederik Rose Svarre PeerJ Author Summary Kinesiology Public Health Translational Medicine PeerJ Contributions Articles 1 July 14, 2020 The validity of activity trackers is affected by walking speed: the criterion validity of Garmin Vivosmart® HR and StepWatch™ 3 for measuring steps at various walking speeds under controlled conditions Frederik Rose Svarre, Mads Møller Jensen, Josephine Nielsen, Morten Villumsen https://doi.org/10.7717/peerj.9381 PubMed 32742766