We are a group of researchers dedicated to understanding changes in energy expenditure and physical activity with aging, and the corresponding effects on physical and cognitive health. We are based at the Johns Hopkins Bloomberg School of Public Health and the Johns Hopkins School of Medicine in Baltimore, MD.

Energy expenditure changes dramatically with aging, from resting to maximal exertion. These changes are reflective of underlying biological and physiological processes that affect healthy longevity.

Accelerometers have revolutionized the field of physical activity research, allowing a better understanding of quantities, patterns, and trends of daily physical activity and their effects on functional aging.