Fig. 2

Cough parameters defined for analysis. The number of cough bouts was counted on the flow trace. The duration of the cough reflex: the period from the onset of the first bout to the termination of the last one. The mean of the peak pleural pressures (P _pls): an average of the peak pleural pressures of the cough bouts. The mean of the peak explosive flows (\(\dot{V}\)s): an average of the peak flow of the coughing bouts