The Arabic version of the Lower Extremity Functional Scale is a reliable and valid measure of activity limitation in people with chronic obstructive pulmonary disease

This study evaluated the reliability of the Arabic version of the Lower Extremity Functional Scale in 70 patients with COPD. As part of the study, lung function testing (FEV1, FVC, FEV1/FVC ratio) was undertaken using the Vitalograph Alpha spirometer.