Measuring Outcomes With Validated Exercise

Physical activity and its intensity level is a critical determinant of health. Digital Health Technologies, such as wearable accelerometers (wrist-worn watch-like devices), can provide researchers and clinicians with objective measures of activity intensity, duration, and effect on an individual's physiology which can provide important insight into overall health. The purpose of this observational study is to assess how well wrist-worn devices can measure the intensity of movement and exercise. This study is designed to rigorously validate existing activity classification algorithms using synchronized multi-sensor data and indirect calorimetry during structured, semi-structured, and free-living tasks.