Cardiorespiratory Fitness and Sedentary Lifestyle in the Morbidly Obese
Version of Record online: 19 MAR 2009
Copyright © 2009 Wiley Periodicals, Inc.
Volume 32, Issue 3, pages 121–124, March 2009
How to Cite
Vanhecke, T. E., Franklin, B. A., Miller, W. M., deJong, A. T., Coleman, C. J. and McCullough, P. A. (2009), Cardiorespiratory Fitness and Sedentary Lifestyle in the Morbidly Obese. Clin Cardiol, 32: 121–124. doi: 10.1002/clc.20458
- Issue online: 19 MAR 2009
- Version of Record online: 19 MAR 2009
- Manuscript Accepted: 21 APR 2008
- Manuscript Received: 18 MAR 2008
- activity sensor;
- cardiovascular health;
- physical activity;
- aerobic capacity;
- caloric expenditure
Sedentary lifestyles and poor physical fitness are major contributors to the current obesity and cardiovascular disease pandemic.
Daily physical activity and cardiorespiratory fitness are correlated in morbidly obese individuals in their free-living environment.
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. Following collection of the device data, structured cardiorespiratory fitness testing was performed on each subject.
Mean caloric expenditure for all individuals was 2,668 ± 481 kcal/d. On average, subjects took 3,763 ± 2,223 steps. On average 23 h and 51.6 min per d were spent sleeping or engaged in sedentary activity (<3 metabolic equivalents [METs]) and the remaining 8.4 min were spent in moderate activity (3–6 METs). Average peak VO2 was 16.8 ± 4.7 mL/kg/min. Higher peak VO2 correlated with higher total caloric expenditure (TCE; r = 0.628, p = 0.05) and trended with higher steps/day (r = 0.591, p = 0.07).
Most morbidly obese participants in this study were markedly sedentary. These study results may provide important links between obesity, poor fitness, and cardiovascular disease. Copyright © 2009 Wiley Periodicals, Inc.