Journal of Sports Science and Medicine

Table 2 Intensities (VO, % VO, V, HR ) and coefficients of determinations (r) from the relations VO = (V) and VO = (HR). Data are means (±SD).

Part 1: Physical activities with oxygen consumption steady state
		Intensities				r²_session
	Subjects (n = 12)	VO₂_mean	% VO₂_max	V_{E mean}	HR_mean	VO₂ = f (V_E)	VO₂ = f (HR)
Group 1	20 % VO_2max < I < 55 % VO_2max 20 walks : 3 min	1.45 (.54)	33.4 (10.8)	30.3 (10.2)	96 (18)	.87 (**)	.61
Group 2	17 % VO_2max < I < 62 % VO_2max 26 walks : 6 min	1.42 (.56)	33.5 (13.1)	30.7 (12.3)	92 (19)	.80 (**)	.50
Part 2: Physical activities without oxygen consumption steady state
		Intensities				r²_session
	Subjects (n = 12)	VO₂_mean	% VO₂_max	V_{E mean}	HR_mean	VO₂ = f (V_E)	VO₂ = f (HR)
Group 3	13 % VO_2max< I < 40 % VO_2max 22 walks : 1 min	1.05 (.32)	24.2 (7.6)	23.6 (6.5)	89 (12)	.82 (**)	.63
Group 4	40 % VO₂_max < I < 60 % VO₂_max 12 intermittent work	2.02 (.20)	47.1 (4.5)	46.0 (4.7)	114 (13)	.82 (*)	.73

VO: Mean oxygen uptake (l·min), SD: Standard deviation, % VO: Percentage of maximum oxygen uptake, V: Mean ventilation (l·min), HR: Heart rate (beats·min), VO: oxygen uptake (l.min), V: Ventilation (l.min), HR : heart rate (beats.min), I : intensity.

** denote p < 0.05 and 0.01 respectively.