Counting Steps in Activities of Daily Living in People With a Chronic Disease Using Nine Commercially Available Fitness Trackers: Cross-Sectional Validity Study

Counting Steps in Activities of Daily Living in People With a Chronic Disease Using Nine Commercially Available Fitness Trackers: Cross-Sectional Validity Study

Authors of this article:

Darcy Ummels^{1, 2, 3} ;   Emmylou Beekman^{1, 2, 3} ;   Kyra Theunissen¹ ;   Susy Braun^{4, 5} ;   Anna J Beurskens^{1, 3}