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

Table 3

Mean difference (mL·kg⁻¹·min⁻¹), 𝑅-square coefficient, standard error of estimate, and intraclass correlation between 𝑉_O2max assessed and estimated by three non-exercise models (𝑁=117).

	Total (𝑁=117)					Males (𝑁=70)					Females (𝑁=47)
	𝑉O2max					𝑉O2max					𝑉O2max
	Mean difference	𝑟^2	SEE	ICC	𝑃	Mean difference	𝑟^2	SEE	ICC	𝑃	Mean difference	𝑟^2	SEE	ICC	𝑃
VSAQ	4.94 (11.9%)	0.16	7.63	0.57	<0.0001	−1.81 (−4.1%)	0.05	7.92	0.36	<0.0317	−1.24 (−3.3%)	0.07	7.17	0.42	<0.040
RPC	0.24 (1.0%)	0.09	7.60	0.46	<0.001	3.22 (7.3%)	0.17	1.70	0.58	<0.0001	−3.49 (−9.2%)	0.07	8.35	0.42	<0.035
CRF	−3.54 (−8.5%)	0.53	5.75	0.83	<0.0001	−3.89 (−8.9%)	0.37	6.01	0.76	<0.0001	−2.90 (−7.7%)	0.47	5.36	0.81	<0.0001

VSAQ: Veteran Specific Activity Questionnaire using the following equation: 𝑉_O2 (mL·kg⁻¹·min⁻¹) = (4.7 + 0.97 (VSAQ) − 0.06 (age) × 3.5); for women this value was multiplied by 0.85 [8]; RPC: Rating of Perceived Capacity; CRF: Cardiorespiratory Fitness.