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

Table 3

Exercise parameters in cystic fibrosis patients with postexercise PASP ≤35 mmHg and postexercise PASP >35 mmHg.

	PASP ≤35	PASP >35	𝑃 value
WR peak (watts)	135.7±46.6	102.4±30.1	NS
WR peak (% predicted)	73.6±11.6	51.4±7.5	0.008
VO2 peak (mL/kg*min)	30.1±8.0	25.1±5.5	NS
VO2 peak (% predicted)	78.4±15.4	63.4±6.2	0.042
AT (mL/kg*min)	20.3±5.6	16.3±1.6	NS
AT (% predicted)	51.9±11.2	42.1±4.6	NS
VO2/HR (mL/kg*beats)	11.4±3.8	9.2 ± 2	NS
VO2/HR (% predicted)	93.5±17.6	75.9±7.8	0.040
VE/VCO2@AT	28.1±4.1	32.8±2.3	0.061
VEmax (lit)	63.3±21.6	57.5±18.7	NS
VEmax/MVV (%)	64.3±23.8	70.5±14.9	NS
MVV-VEmax (lit)	39.6±35.1	42.1±38.9	NS
BR (lit)	42.8±40.7	31.7±21.2	NS
RER	1.19±0.7	1.19±0.4	NS
SpO2 peak (%)	95.4±2.7	90.6±4.7	0.016
Borg scale fatigue (peak)	7.9±1.6	7.4±0.6	NS
Borg scale dyspnea (peak)	5.9±3.3	7.0±2.2	0.046

Data are presented as mean ± 1 standard deviation. NS: not significant, WR peak: maximal work rate, VO₂ peak: maximal oxygen uptake, AT: oxygen uptake at anaerobic threshold, VO₂/HR: peak oxygen pulse, VE/VCO₂@AT: ventilatory equivalent for carbon dioxide at anaerobic threshold, VEmax: minute ventilation at peak exercise, VEmax/MVV: minute ventilation at peak exercise to maximum voluntary ventilation ratio, BR: breathing reserve, RER: respiratory exchange ratio, SpO₂ peak: oxygen saturation at peak exercise.