Comparison of raw accelerometry data from ActiGraph, Apple Watch, Garmin, and Fitbit using a mechanical shaker table. oleh James W White, Olivia L Finnegan, Nick Tindall, Srihari Nelakuditi, David E Brown, Russell R Pate, Gregory J Welk, Massimiliano de Zambotti, Rahul Ghosal, Yuan Wang, Sarah Burkart, Elizabeth L Adams, Mvs Chandrashekhar, Bridget Armstrong, Michael W Beets, R Glenn Weaver