Background: Sedentary lifestyles and poor physical fitness are major contributors to the current obesity and cardiovascular disease pandemic.
Hypothesis: Daily physical activity and cardiorespiratory fitness are correlated in morbidly obese individuals in their free-living environment.
Methods: Ten morbidly obese participants continuously wore an activity sensor that measured caloric expenditure, minute-by-minute physical activity, and steps/day over a 72-h period.