The within-group comparisons for the primary outcome
showed that only the intervention group was associated
with statistically significant improvements in 6MWD at 12
month (Table 2). Moreover, after adjustment for the
baseline value, results showed that the intervention group
walked 50.5 m (95%CI: 2e99 m) farther than the usual care
group (Table 2). In the same period, the results indicate no
significant between- or within-group difference in dyspnea
(post 6MWD) scores.