Test-Retest Reliability and Physiological Responses Associated with the Steep Ramp Anaerobic Test in Patients with COPD

Table 3

Pearson’s 𝑟 correlation coefficients between end-exercise measures during the SRAT and the cardiopulmonary exercise test (CPET) and Wingate anaerobic test (WAT).

End-exercise measures	Tests
	CPET	WAT
PWR (CPET & SR) Wavg (WAT)	0.887*	0.887*
𝑉O2 (L/min)	0.891*	0.939*
𝑉CO2 (L/min)	0.837*	0.926*
𝑉𝐸 (L/min)	0.800*	0.930*
RER	0.549	0.615*
𝑉𝑇 (L)	0.907*	0.954*
𝑉𝑇/IC (%)	0.838*	0.806*
IC/TLC (%)	0.905*	0.873*
EELV/TLC (%)	0.905*	0.873*
EILV/TLC (%)	0.916*	0.880*
IRV/TLC (%)	0.916*	0.880*
RR (breaths per minute)	0.559	0.877*
SpO2 (%)	0.499	−0.017
HR (bpm)	0.684*	0.955*

*indicates significant correlation (𝑃<0.05).