Table 2.

Comparison of measured and predicted maximal oxygen uptake (O_2max).

	Bias (95% CI) (mL·kg−1·min−1)	RMSE (mL·kg−1·min−1)	SEE (mL·kg−1·min−1)	r
Bruce	−8.3 (−14.0, −2.6)*	11.2	6.4	0.53
UCLA	−3.3 (−9.7, 3.0)	9.1	7.4	0.38
WFI	−6.4 (−11.8, −1.1)*	9.6	6.3	0.36
Shuttle	−2.1 (−7.7, 3.4)	7.6	4.5	0.45
Cycle	−5.2 (−11.9, 1.6)	10.3	8.0	0.27
Overall	−5.1 (−7.4, −2.7)*	9.6	6.7	0.42

N = 50 for Overall and N = 10 for all other protocols. WFI, Wellness Fitness Initiative; Bias, predicted O_2max – measured O_2max; CI, confidence interval; RMSE, root mean squared error; SEE, standard error of the estimate; r, Pearson product-moment correlation.

^*Predicted O_2max significantly different than measured O_2max.