Table 3.

Comparing Variables’ P-Values between groups

Parameters/Stages	P-Value
	0-I vs II–III	0-I vs IV	II–III vs IV
Peak VO2(%predicted)	0.188	0.907	0.021*
O2 pulse (%predicted)	0.942	0.056	0.013*
VE/VCO2(AT)	0.997	0.008*	0.000*
SpO2-0	0.372	0.002*	0.000*
SpO2-6	0.082	0.011*	0.014*
FVC(%predicted)	0.671	0.004*	0.002*
FEV1(%predicted)	0.220	0.006*	0.044*
FEV1/FVC %	0.044*	0.060	0.937
Distance, meter	0.998	0.000*	0.000*

*Asterisk indicates Significant (P<0.05); Peak VO2=peak oxygen uptake; O₂ pulse=oxygen pulse; VE=Minute Ventilation; SPO₂-0=Peripheral capillary oxygen saturation of minute 0; SPO₂-6=Peripheral capillary oxygen saturation of minute 6, FVC=forced vital capacity; FEV1=forced expiratory volume in one second; Distance=traveled in 6MWT