Determination of Best Criteria to Determine Final and Initial Speeds within Ramp Exercise Testing Protocols

Table 5

Intercept, slope, 𝑅-square (𝑟²), and standard error of estimate (SEE) for the regression models obtained in ramp protocols initiating with speeds corresponding to 50% of the estimated 𝑉_O2max (CPET1bis), 50% of the measured 𝑉_O2max (CPET2), and 60% of the measure 𝑉_O2max (CPET3).

	𝑌 intercept	Slope	𝑟-Square	SEE; (mL·kg^−1·min^−1)
𝑉O2versus speed in CPET1bis	−4.882±2.696^∗	0.96±0.027^§	0.93±0.050	2.14±0.67
𝑉O2versus speed in CPET2	−8.270±6.312^∗	0.94±0.029^§	0.89±0.054	2.19±0.55
𝑉O2versus speed in CPET3	−14.666±8.958^∗	0.92±0.036^§	0.86±0.065	2.48±0.67

*Intercept significantly different from zero (𝑃<0.0001).
^§Slope significantly different from 1.0 (𝑃<0.0001).