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Figure 5 Time course of recovery of physiological variables. (A) Volumes and flows; (B) Xrs; (C) %FL. Values are mean change relative to visit 1. Error bars show SEM. FEV1, forced expiratory volume in 1 s; %FL, percentage flow limitation; IC, inspiratory capacity; PEF, peak expiratory flow; VC, vital capacity; Xrs, reactance of respiratory system.
