Table 2

Respiratory muscle pressure assessment

MeasuredLLNULNReference (mean value)#% of reference
MIP sustained for 1 s (at RV) cmH2O688016812455%
MIP at peak value (at RV) cmH2O70
MEP sustained for 1 s (at TLC) cmH2O16614931723371%
MEP at peak value (at TLC) cmH2O
Maximum SNIP cmH2O528112910550%

MIP: maximal inspiratory pressure; MEP: maximal expiratory pressure; SNIP: sniff nasal inspiratory pressure. #: reference values taken from [2, 3].