Table 6

Average ventilatory variables at exhaustion for index and control groups (n=16 pairs)

IndexControlDifferences (index–control)
Ve (l/min)56 (47.5–64.5)60 (52–68)−4.3 (−9.0 to +0.4)
Vt (l)1.04 (0.81–1.27)1.23 (1.01–1.45)−0.196-150 (−0.05 to −0.32)
rf (breaths/min)56 (51–61)50 (46–54)5.96-150(+0.8 to +11.1)
Ti/Tb (%)50 (48–52)52 (51–53)−1.6 (−3.5 to +0.3)
Vi/Ti (l/s)1.59 (1.33–1.85)1.65 (1.42–1.88)−0.07 (−0.2 to +0.06)
Ve/Te (l/s)1.51 (1.29–1.73)1.68 (1.45–1.91)−0.176-150(−0.33 to −0.01)
  • Values shown are mean (95% confidence interval). Ve = minute ventilation; Vt = tidal volume; rf = respiratory frequency; Ti/Tb = inspiratory percentage of breath cycle; Vi/Ti = mean inspiratory flow; Ve/Te = mean expiratory flow.

  • 6-150 p<0.05.