Older Adults' Experiences Using a Commercially Available Monitor to Self-Track Their Physical Activity.
Siobhan K McMahonBeth A LewisJ Michael OakesWeihua GuanJean F WymanAlexander M K RothmanPublished in: JMIR mHealth and uHealth (2016)
Clinicaltrials.gov NCT02433249; https://clinicaltrials.gov/ct2/show/NCT02433249 (Archived by WebCite at http://www.webcitation.org/6gED6eh0I).