TABLE 1.

Mean with the 95% confidence intervals (95% CI) of the selected cardiorespiratory parameters at the three moments in GCS and PLACEBO condition

	GCS				PLACEBO				p (GCS vs PLACEBO)
	V1	V2	Diff	p	V1	V2	Diff	p	V1	V2
VE (l · min−1)	83. 8 [75.3-92.3]	92.2 [82.6-101.8]	8.5	<0.001	82. 9 [74.5-91.3]	91.8 [81.7-101.8]	8.9	<0.001	0.24	0.81
HR (beats · min−1)	163.6 [159.1-168.1]	174.1 [168.8-179,4]	10.5	<0.001	163.1 [157.9-168.2]	173.1 [167.1-179.1]	10.0	<0.001	0.63	0.55
VO2/kg (ml · min−1 · Kg−1)	45.2 [41.1-49.3]	44.7 [40.6-48.9]	-0.5	0.28	45.4 [41.7-49.2]	44.7 [41.1-48.3]	-0.8	0.05	0.85	0.98
VCO2/kg (ml · min−1 · Kg−1)	41.8 [37.9-45.6]	41.0 [37.2-44.9]	-0.7	0.01	42.1 [38.4-45.7]	41.3 [37.8-44.8]	-0.7	0.03	0.78	0.81
VE/VO2 (l · min−1)	28.3 [25.6-31.0]	31.5 [28.4-34.6]	3.2	<0.001	28.2 [25.5-30.9]	31.6 [28.5-34.7]	3.4	<0.001	0.84	0.90
VE/VCO2 (l · min−1)	30.6 [28.0-33.2]	34.2 [31.3-37.2]	3.6	<0.001	30.5 [27.7-33.3]	34.2 [31.0-37.4]	3.7	<0.001	0.86	0.99
VO2/HR (ml · beats · min−1)	18.8 [16.7-20.9]	18.0 [16.3-19.7]	-0.8	0.15	18.7 [16.8-20.5]	17.4 [15.5-19.2]	-1.3	<0.001	0.88	0.24

Note: Differences between V1 and V2, and between GCS and PLACEBO, are presented with statistically significant p values indicated in bold letters (p < 0.05). V_E – minute ventilation, HR – heart rate, VO₂/kg – relative oxygen consumption, VCO₂/kg – relative carbon dioxide production, V_E/VO₂ – ventilatory equivalent for oxygen, V_E/VCO₂ – ventilatory equivalent for carbon dioxide, and VO₂/HR – oxygen pulse; V1 – 5th to 10th minute; V2 – last 5 minutes of test