Table 7—

Repeated measurement of maximal inspiratory mouth pressure (PI,max) and the coefficient of repeatability (CR) at residual volume (RV) and functional residual capacity (FRC)

PI,max 1 kPaPI,max 2 kPaMean kPaDifference kPaCR# kPaCR/range %
RV
PI,peak11.83±3.7312.64±3.9912.24±3.720.80±2.124.4925.18
PI,max,0.510.61±3.7911.47±3.9311.04±3.700.86±2.214.7027.35
PI,max,1.09.74±3.7910.49±4.0510.11±3.760.75±2.234.6726.19
PI,max,0.15.30±2.605.82±2.485.56±2.430.52±1.483.1130.07
FRC
PI,peak10.36±3.5910.73±3.6110.54±3.460.37±2.004.0227.16
PI,max,0.59.57±3.5310.06±3.689.82±3.490.49±1.803.0724.93
PI,max,1.08.74±3.529.29±3.689.02±3.510.55±1.603.3523.15
PI,max,0.13.21±1.893.83±2.003.52±1.840.62±1.302.8636.34
  • PI,peak: peak maximal inspiratory mouth pressure

  • PI,max,0.5: plateau maximal inspiratory mouth pressure sustained for 0.5 s

  • PI,max,1.0: plateau maximal inspiratory mouth pressure sustained for 1.0 s

  • PI,max,0.1: maximal inspiratory mouth pressure 100 ms after start of maximal inspiratory manoeuvre

  • n=50

  • #: see 18

  • : of the second measurement of PI,max