A prospective study on the correlation between six minute walk test and forced expiratory volume at one second in chronic obstructive pulmonary disease patients

This prospective, cross-sectional study examined the validity of the 6MWT for assessing disease severity per GOLD criteria in 70 patients with COPD. As part of the study, lung function testing was undertaken using a Vitalograph Pneumotrac spirometer with Spirotrac software.