Figure 3

Quality of Life. SGRQ (A) and CAT (B). Whole body vibration (WBV) had a positive impact on St. Georges Respiratory Questionnaire (SGRQ; n = 20) and COPD Assessment Test (CAT; n = 20); conventional physiotherapy did not influence significantly on SGRQ (n = 19) or CAT (n = 19) (Wilcoxon matched-pairs signed-ranks test). When comparing the deltas between both groups (Mann–Whitney-U test) we found a significant difference in favour of WBV in the SGRQ, but not in the CAT score. * p < 0.05.