. 2019 Jul 24;14(7):e0219741. doi: 10.1371/journal.pone.0219741

Table 9. The estimated levels of VO₂ based on the HR-VO₂ regression equations in day 1 and 2 (model 2) and three levels of HR from cycle commuting (means ± SD, coefficients of variation (CV), and 95% confidence intervals (CI), n = 19).

	HR at field and estimations of VO₂ based on three levels of HR and the HR-VO₂ regression equations at day 1 and 2
	Lowest fifth of HR					Middle fifth of HR					Highest fifth of HR
	HR F1	VO₂:1	VO₂:2	Abs diff	% diff	HR F3	VO₂: 1	VO₂:2	Abs diff	% diff	HR F5	VO₂:1	VO₂:2	Abs diff	% diff
Mean	116	1.62	1.63	0.01	1.09	138	2.21	2.24	0.03	1.75	151	2.55	2.60	0.05	2.12
SD	10.0	0.57	0.60	0.14	10.6	8.49	0.83	0.88	0.15	6.43	8.27	0.90	0.94	0.16	5.92
P-value				.769	.661				.321	.252				.219	.136
CI lower				-0.06	-4.04				-0.04	-1.35				-0.03	-0.74
CI upper				0.08	6.22				0.11	4.85				0.13	4.97
CV				6.25					4.72					4.44

Table 9. The estimated levels of VO2 based on the HR-VO2 regression equations in day 1 and 2 (model 2) and three levels of HR from cycle commuting (means ± SD, coefficients of variation (CV), and 95% confidence intervals (CI), n = 19).