Using a Consumer Wearable Activity Monitoring Device to Study Physical Activity and Sleep Among Adolescents in Project Viva: Cohort Study

Yutong Zhang   ¹ , MS ;   Nicole Bornkamp   ¹ , BA, MPH ;   Marie-France Hivert   ^{1, 2, 3} , MMSc, MD ;   Emily Oken   ^{1, 3, 4} , MPH, MD ;   Peter James   ^{1, 3, 5, 6} , MHS, ScD

¹ Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, MA, United States

² Diabetes Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States

³ Harvard Medical School, Harvard University, Cambridge, MA, United States

⁴ Department of Nutrition, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, United States

⁵ Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, United States

⁶ Division of Environmental and Occupational Health, Department of Public Health Sciences, University of California, Davis School of Medicine, Davis, CA, United States