Spirometry was done also for all patients 10 min after each supervised training session. The measured post-training FEV1% pred. were compared throughout the 12-week program using the one way ANOVA test followed by multiple comparison POST-HOC Benferroni method. There was a significant difference between all sessions regarding the post-training FEV1% pred. being increasing sequentially from the first to the last training week (F = 72.554, p = 0.000). The change of FEV1% pred. over the 12-week program time is presented in Fig. 2.