Table 2—

Peak (PI,peak) and plateau maximal inspiratory mouth pressures measured at residual volume (RV) and functional residual capacity (FRC)

MalesFemales
RVFRCRVFRC
Subjects n229304
PI,peak kPa12.4±3.611.0±3.48.9±3.47.5±3.0
PI,max,0.5 kPa11.3±3.410.2±3.28.0±3.36.8±2.9
PI,max,1.0 kPa10.5±3.49.5±3.17.3±3.16.2±2.7
PI,max,0.1 kPa4.8±2.22.9±1.53.3±1.71.9±0.9
  • Data are presented as mean±sd

  • 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