Table 1.

Oxygen consumption, muscle oxygen saturation, total hemoglobin and ventilatory variables in the different phases of exercise (n = 19).

	Phases
Variables	Rest	VT1	VT2	$\stackrel{.}{\mathbf{V}}$O2-peak
$\stackrel{.}{\mathrm{V}}$O2 (mL·kg−1·min−1)	6.35 ± 0.75	31.30 ± 4.15 *	52.01 ± 3.91 *	62.32 ± 4.65 *
SmO2−m.intercostales (%)	74.6 ± 10.7	65.1 ± 12.6 *	52.9 ± 11.4 *	35.2 ± 12.8 *
∆SmO2−m.intercostales (%)	-	-	-	53.4 ± 13.9
SmO2−m.vastus lateralis (%)	63.2 ± 10.9	48.7 ± 9.6 *	36.1 ± 10.2 *	17.1 ± 7.5 *
∆SmO2−m.vastus lateralis (%)	-	-	-	72.4 ± 13.5
THb m.intercostales (g·dL−1)	12.4 ± 0.5	12.4 ± 0.5	12.4 ± 0.5	12.3 ± 0.6
THb m.vastus laterallis (g·dL−1)	12.6 ± 0.4	12.5 ± 0.5	12.4 ± 0.5	12.6 ± 0.6
$\stackrel{.}{\mathrm{V}}$E (L·min−1)	10.4 ± 2.5	43.2 ± 10.2 *	99.5 ± 18.1 *	158.8 ± 18.9 *
RR (bpm)	13.1 ± 1.7	25.3 ± 6.7 *	40.7 ± 7.6 *	59.3 ± 8.4 *
Vt (L)	0.81 ± 0.20	1.75 ± 0.41 *	2.47 ± 0.43 *	2.71 ± 0.30 *

Data are presented as mean ± standard deviation. *: p < 0.05 (R.M-ANOVA-test, statistically difference with the previous phase) $\stackrel{.}{\mathrm{V}}$O₂: oxygen consumption; SmO₂: muscle oxygen saturation; ∆SmO₂ (%): ((SmO₂ at rest phase-SmO₂ at $\stackrel{.}{\mathrm{V}}$O_2-peak phase) (SmO₂ in $\stackrel{.}{\mathrm{V}}$O_2-peak phase)⁻¹) × 100; THb: total hemoglobin; $\stackrel{.}{\mathrm{V}}$E: lung ventilation; RR: respiratory rate; Vt: tidal volume.