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

Table 2

Exercise parameters in cases and controls.

	Cases	Controls	𝑃 value
WR peak (% predicted)	66. ± 14.8	97.1±5.3	0.002
VO2 peak (mL/kg*min)	28.5±7.5	35.9±4.8	0.026
VO2 peak (% predicted)	73.7±14.8	97.8±5.9	0.002
AT (mL/kg*min)	20.1±5.4	27.1±5.5	0.013
AT (% predicted)	48.8±10.5	69.9±12.3	0.008
VO2/HR (mL/kg*beats)	10.8±3.4	15.9±4.9	0.032
VO2/HR (% predicted)	88 ± 17.2	98.1±11.3	0.048
VE/VCO2@AT	31.3±3.7	25.1±3.0	0.008
VEmax (lit)	69.8 ± 21	81.1±30.5	NS
VEmax/MVV (%)	66.7±21.5	53.4±18.1	NS
MVV-VEmax (lit)	40.01±36.3	79.96±34.9	0.047
BR (lit)	40 ± 36.3	79.7±34.7	0.045
RER	1.19±0.7	1.21±0.6	NS
SpO2 peak (%)	93.9 ± 4	96 ± 1.9	NS
Borg scale fatigue (peak)	7.9±1.4	8.2±1.3	NS
Borg scale dyspnea (peak)	6.2±2.9	5.9±1.4	NS

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, VE max: 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.