The Impact of Pulmonary Arterial Pressure on Exercise Capacity in Mild-to-Moderate Cystic Fibrosis: A Case Control Study

Table 4

Pearson correlations between ΔPASP and exercise variables in cases and controls.

	ΔPASP
	Cases	Controls
WR peak (watts)	−0.539^*	NS
WR peak (% predicted)	−0.764^**	NS
VO2 peak (mL/kg*min)	−0.540^*	NS
VO2 peak (% predicted)	−0.714^*	NS
AT (mL/kg*min)	NS	NS
AT (% predicted)	NS	NS
VO2/HR (mL/kg*beats)	−0.530^*	NS
VO2/HR (% predicted)	−0.663^**	NS
VE/VCO2@AT	NS	NS
SpO2 peak (%)	−0.701^*	NS

ΔPASP: PASP (pulmonary artery systolic pressure) after exercise − PASP at rest, WR peak: maximal work rate, VO₂ peak: maximal oxygen uptake, AT: anaerobic threshold, VO₂/HR: peak oxygen pulse, VE/VCO₂@AT: ventilatory equivalent for carbon dioxide at anaerobic threshold, SpO₂ peak: oxygen saturation at peak exercise; ^*𝑃<0.05; ^**𝑃<0.001; NS: not significant.