Table 5.

Reproducibility of HR–VO₂ regression equations based on three submaximal work rates (model 1) (means ± SD)

Participant	Regression equations
	Day 1			Day 2
	y intercept	Slope	r	y intercept	Slope	r
Males
1	− 1.17	0.0235	1.000	− 0.91	0.0229	0.999
2	− 1.26	0.0277	0.979	− 2.65	0.0380	0.979
3	− 0.05	0.0114	0.968	− 0.16	0.0128	0.971
4	− 1.18	0.0241	1.000	− 0.90	0.0207	0.998
5	− 1.90	0.0279	1.000	− 1.50	0.0252	0.989
6	− 0.43	0.0184	1.000	− 0.65	0.0227	1.000
7	− 3.37	0.0383	0.999	− 3.29	0.0376	0.988
Mean	− 1.34	0.0245	0.992	− 1.44	0.0257	0.989
SD	1.08	0.0084	0.013	1.13	0.0091	0.011
Females
1	− 1.17	0.0221	0.995	− 1.47	0.0254	1.000
2	− 1.08	0.0181	0.996	− 1.03	0.0182	1.000
3	− 0.91	0.0163	1.000	− 0.65	0.0147	1.000
4	− 0.91	0.0191	1.000	− 0.84	0.0191	0.996
5	− 0.77	0.0160	0.999	− 0.73	0.0150	0.998
6	− 1.48	0.0226	0.995	− 1.58	0.0229	0.991
7	− 0.39	0.0144	0.990	− 0.39	0.0144	0.999
Mean	− 0.96	0.0184	0.996	− 0.95	0.0185	0.998
SD	0.34	0.0031	0.003	0.43	0.0043	0.003
All
Mean	− 1.15	0.0214	0.994	− 1.20	0.0221	0.993
SD	0.79	0.0069	0.010	0.86	0.0078	0.009
P value for difference between days 1 and 2				0.683	0.465	0.541