Usability, Acceptability, and Satisfaction of a Wearable Activity Tracker in Older Adults: Observational Study in a Real-Life Context in Northern Portugal

Célia Domingos   ^{1, 2, 3, 4} , BSc ;   Patrício Costa   ^{1, 2, 4} , PhD ;   Nadine Correia Santos   ^{1, 2, 4, 5 *} , PhD ;   José Miguel Pêgo   ^{1, 2, 3, 4 *} , MD, PhD

¹ Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal

² ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal

³ iCognitus4ALL – IT Solutions, Braga, Portugal

⁴ Clinical Academic Center – 2CA-B, Braga, Portugal

⁵ Associação Centro de Medicina P5, School of Medicine, University of Minho, Braga, Portugal

*these authors contributed equally