Generation of a Free-Living Ground-Truth Validation Dataset for Wearable Measures of Physical Activity, Sedentary Behavior, Sleep, and Heart Rate in Adults (OxWEARS): Protocol for a Cross-Sectional Study

Benjamin D Maylor   ^{1, 2} , MSc, PhD ;   Scott R Small   ¹ , MSc, DPhil ;   Tatiana Plekhanova   ^{1, 2} , MSc, PhD ;   Laura Brocklebank   ^{1, 2} , MSc, PhD ;   Stefan van Duijvenboden   ^{1, 2} , MSc, PhD ;   Rachel Sharman   ³ , PhD ;   Elizabeth A Hill   ^{3, 4} , PhD ;   Fredrik Karpe   ^{5, 6} , MBBS, PhD, CCST ;   Simon D Kyle   ³ , MA, PhD ;   Aiden Doherty   ^{1, 2} , PhD

¹ Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom

² Li Ka Shing Centre for Health Information and Discovery, Big Data Institute, University of Oxford, Oxford, United Kingdom

³ Nuffield Department of Clinical Neurosciences, Sir Jules Thorn Sleep and Circadian Neuroscience Institute (SCNi), University of Oxford, Oxford, United Kingdom

⁴ School of Applied Sciences, University of the West of England, Bristol, United Kingdom

⁵ Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, United Kingdom

⁶ NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Trust, Oxford, United Kingdom