Energy expenditure during daily activities as measured by two motion sensors in patients with COPD.

Background: In patients with chronic obstructive pulmonary disease (COPD), energy expenditure (EE) assessment during the performance of daily activities is not yet studied in depth. The aim of this study was to determine which daily activities are more demanding to patients with COPD and to compare the accuracy of EE estimation given by the pedometer Digiwalker SW701 (DW) and the multisensor SenseWear Armband (SAB).

Methods: Thirty-six patients with COPD (20 men; FEV1 48 ± 15%predicted; BMI 25.