Table 6. Reproducibility of HR-VO₂ regression equations and correlation coefficients based on three submaximal work rates (model 1)(means ± SD, n = 19).

	HR-VO2 regression equations
	Day 1			Day 2
	y-intercept	slope	r	y-intercept	slope	r
Mean	-1.33	0.0255	0.996	-1.58	0.0277	0.997
SD	0.59	0.0080	0.005	0.74	0.0089	0.004
P-value abs. diff. day 1 and 2				.085	.053	.560