Results
REGRESSION
The main groups characteristic is presented in Groups characteristic.The analysis of the results showed a statistically significant improvement in both groups with regard to exercise performance expressed as 6MWT distance (CG: Results of the 6-minute walk test.Regarding lung function, the analysis showed essentially normal lung function at baseline and a non-statistically significant improvement after the completion of the rehabilitation program.The analysis of the stress level showed a statistically significant improvement in both groups (CG: Results of the analyzed outcomes.Bold highlights statistical significance p < 0.05.FEV1, forced expiratory volume for 1 s; FVC, forced vital capacity; FEV1%VC, forced expiratory volume in one second % of vital capacity; TLC, total lung capacity; % pred, predicted values from Viljanen (Data is presented as mean (SD) or median [IRQ]. Differences in pre-post rehabilitation values were analyzed by paired t-student test or Wilcoxon test, depending on the distribution of the variables. Evaluation of between-group differences was assessed using the Mann-Whitney U-test.Stepwise multiple regression was used to examine how stress level could explain a statistically significant amount of variance in functional capacity (Stress level (PSS-10) a predictor for functional capacity outcomes (stepwise regression results).The following covariates were considered but not included: TLC pre, FVC pre, FEV