Table 2.

Validity of the EB-test and the Å-test, absolute VO₂max, mean ± standard deviation

	Measured VO2max (L min−1) mean ± SD	Estimated VO2max mean ± SD (L min−1)		Difference estimated vs. measured VO2max (L min−1) mean (95% CI)		Correlation coefficient (r)		Coefficient of variation (%)		SEE (L min−1)
		EB-test	Å-test	EB-test	Å-test	EB-test	Å-test	EB-test	Å-test	EB-test	Å-test
All (n = 104)	2.36 ± 0.55	2.37 ± 0.57	2.15 ± 0.63	0.02 (− 0.03 to 0.07)	− 0.20 (− 0.29 to 0.12)	0.88**	0.73**	11.7	19.8	0.27	0.44
Women (n = 52)	1.89 ± 0.22	1.87 ± 0.26	1.76 ± 0.44	− 0.02 (− 0.08 to 0.04)	− 0.12 (− 0.22 to − 0.02)	0.64**	0.58**	11.1	19.8	0.20	0.36
Quartiles according to absolute VO2max level (L min−1)
Q1 (n = 13)	1.61 ± 0.08	1.64 ± 0.22	1.45 ± 0.28	0.03 (− 0.10 to 0.17)	− 0.15 (− 0.33 to 0.02)	0.16	0.04	13.9	18.8	0.23	0.29
Q2 (n = 13)	1.78 ± 0.05	1.79 ± 0.14	1.59 ± 0.21	0.01 (− 0.08 to 0.11)	− 0.18 (− 0.32 to − 0.05)	− 0.07	− 0.16	8.8	13.2	0.15	0.22
Q3 (n = 13)	2.00 ± 0.04	1.94 ± 0.21	1.87 ± 0.35	− 0.06 (− 0.19 to 0.07)	− 0.13 (− 0.33 to 0.08)	0.15	0.21	10.6	17.7	0.22	0.36
Q4 (n = 13)	2.16 ± 0.09	2.10 ± 0.21	2.14 ± 0.53	− 0.06 (− 0.21 to 0.08)	− 0.02 (− 0.35 to 0.30)	− 0.11	0.23	11.2	24.9	0.22	0.56
Men (n = 52)	2.82 ± 0.34	2.88 ± 0.27	2.54 ± 0.55	0.05 (− 0.04 to 0.14)	− 0.28 (− 0.42 to − 0.14)	0.44**	0.44**	11.6	18.9	0.25	0.50
Quartiles according to absolute VO2max level (L min−1)
Q1 (n = 13)	2.41 ± 0.12	2.86 ± 0.20	2.48 ± 0.45	0.46 (0.35 to 0.57)	0.07 (− 0.16 to 0.31)	0.33	0.59	7.4	16.0	0.19	0.38
Q2 (n = 14)	2.71 ± 0.07	2.67 ± 0.28	2.21 ± 0.57	− 0.03 (− 0.18 to 0.12)	− 0.50 (− 0.82 to − 0.18)	0.38	0.44	9.8	22.7	0.27	0.57
Q3 (n = 12)	2.94 ± 0.06	2.89 ± 0.22	2.50 ± 0.39	− 0.05 (− 0.19 to 0.09)	− 0.44 (− 0.68 to − 0.20)	0.11	0.21	7.6	13.8	0.23	0.39
Q4 (n = 13)	3.26 ± 0.21	3.10 ± 0.22	3.00 ± 0.50	− 0.17 (− 0.31 to − 0.02)	− 0.51 (− 0.57 to 0.04)	0.34	0.39	7.7	16.3	0.22	0.51

Quartiles in L min⁻¹, women; < 1.69, 1.69–1.89, 1.89–2.07, 2.07 >; men; < 2.55, 2.55–2.80, 2.80–3.02, 3.02 >

*p < 0.05, **p < 0.01