Heart Rate Measures From Wrist-Worn Activity Trackers in a Laboratory and Free-Living Setting: Validation Study

Andre Matthias Müller   ^{1, 2} , PhD ;   Nan Xin Wang   ¹ , MSc ;   Jiali Yao   ³ , MSc ;   Chuen Seng Tan   ^{3, 4} , PhD ;   Ivan Cherh Chiet Low   ⁵ , PhD ;   Nicole Lim   ⁶ , BBA ;   Jeremy Tan   ⁶ , BEng ;   Agnes Tan   ⁶ , BSc ;   Falk Müller-Riemenschneider   ^{1, 4, 7} , MBBS, MPH, MD

¹ Health Systems & Behavioral Sciences, Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, SG

² Centre for Sport & Exercise Sciences, University of Malaya, Kuala Lumpur, MY

³ Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, SG

⁴ Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, SG

⁵ Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, SG

⁶ Health Promotion Board Singapore, Singapore, SG

⁷ Institute for Social Medicine, Epidemiology and Health Economics, Charite University Medical Centre Berlin, Berlin, DE