Objective: To determine whether the energy expenditure recorded with the physical activity monitor SenseWear™ Pro(2) Armband differs from that recorded with indirect calorimetry.
Design: Cross-sectional comparison of measures of energy expenditure.
Setting: A convenient sample recruited from a randomized controlled trial.
Population: Twenty-nine pregnant women (24-43 years old).
Methods: Energy expenditure was recorded with SenseWear™ Pro(2) Armband and a portable oxygen analyzer for 90 minutes while carrying out a variety of activities of different intensities.
Main outcome measures: Energy expenditure recorded with the physical activity monitor SenseWear™ Pro(2) Armband.
Results: Comparing energy expenditure during free-living activities, the mean differences and limits of agreements from Bland-Altman plots was -136±343 kJ, giving an underestimation of energy expenditure by 9%. The intraclass correlation coefficient was 0.85 (95% confidence interval 0.71-0.93; p<0.001), giving 85% of the variance explained by differences among individuals.
Conclusions: SenseWear™ Pro(2) Armband is a valid measure of energy expenditure during pregnancy.
© 2011 The Authors Acta Obstetricia et Gynecologica Scandinavica© 2011 Nordic Federation of Societies of Obstetrics and Gynecology.