Translation, cross-cultural adaptation, reliability, and construct validity of the Brazilian Portuguese version of the Basic Psychological Needs in Exercise Scale.

59 patients were included (61% with COPD and 39% with ILD). BPNES factor scores were not significantly different between raters' assessments ( > 0.05).

Minimally Important Difference of the 20-m 6-Minute Walk Test in Individuals With COPD.

Background: The 20-m 6-min-walk test (6MWT20) is a valid, reliable alternative for functional capacity assessment; however, its responsiveness and minimally important difference (MID) have yet to be investigated. The aim of this study was to assess the responsiveness and MID of the 6MWT20 in individuals with COPD.

Methods: Fifty-three subjects completed the study from August 2011-March 2020.