Fig. 2From: Oscillometry of the respiratory system in Parkinson's disease: physiological changes and diagnostic useRespiratory muscle strength in the studied groups. Maximal inspiratory A and expiratory B pressures describing the predicted (Pred) and measured values in groupswith Parkinson1-1.5 (PG1-1.5), 2–3 (PG2-3) and smoking patients (PGS)Back to article page