. 2017 Dec 14;124(5):1363–1376. doi: 10.1152/japplphysiol.00474.2017

Table 4.

Metabolic and hematological data for normobaric hypoxia vs. hypobaric hypoxia

	Normobaric Hypoxia				Hypobaric Hypoxia
	Rest	70 W	100 W	130 W	Rest	70 W	100 W	130 W
AaDO₂, mmHg	2.28 ± 1.99	14.6 ± 4.03	16.9 ± 4.26	20.9 ± 4.44	1.75 ± 2.37	11.1 ± 3.42	15.0 ± 4.83	17.0 ± 5.48
V_E, l/min	17.8 ± 3.8	51.5 ± 5.0	69.6 ± 6.4	101.3 ± 20.3^†	15.0 ± 3.5	46.3 ± 12.1	65.9 ± 21.3	82.1 ± 28.1
V_A, l/min	11.5 ± 3.7	41.7 ± 3.4	57.7 ± 5.1	87.9 ± 17.7	9.64 ± 2.6	37.1 ± 9.5	55.0 ± 17.6	71.0 ± 24.0
V_D/V_T	0.41 ± 0.09	0.24 ± 0.07	0.23 ± 0.07	0.15 ± 0.05	0.38 ± 0.09	0.25 ± 0.06	0.23 ± 0.07	0.23 ± 0.08
V̇o₂, l/min	0.38 ± 0.08	1.30 ± 0.17	1.62 ± 0.21	2.06 ± 0.36	0.37 ± 0.09	1.19 ± 0.26	1.53 ± 0.36	1.77 ± 0.44
V̇co₂, l/min	0.36 ± 0.08	1.26 ± 0.12	1.66 ± 0.15	2.24 ± 0.27^†	0.30 ± 0.07	1.11 ± 0.26	1.51 ± 0.40	1.77 ± 0.49
RER	0.94 ± 0.06	0.98 ± 0.05	1.03 ± 0.08	1.10 ± 0.08	0.83 ± 0.08	0.93 ± 0.08	0.98 ± 0.10	0.99 ± 0.07
P_AO₂	45.7 ± 4.7	49.6 ± 3.5	52.2 ± 3.3	55.8 ± 5.4	43.4 ± 2.4	47.8 ± 4.2	50.5 ± 5.6	52.7 ± 6.5
$P a_{O}_{_{2}}$	43.5 ± 5.9	35.0 ± 4.1	35.3 ± 3.8	35.0 ± 5.5	41.6 ± 1.6	36.6 ± 3.3	35.4 ± 3.5	35.7 ± 2.6
_{$P a_{C O}_{_{2}}$}	27.4 ± 3.4	26.2 ± 2.7	25.0 ± 3.3	22.7 ± 5.1	27.5 ± 2.2	26.3 ± 2.8	24.6 ± 4.1	22.9 ± 5.5
HR, beats/min	102 ± 23	143 ± 18	157 ± 18	160 ± 22	82 ± 21	128 ± 24	144 ± 26	156 ± 21
SV, ml	64 ± 11	82 ± 20	96 ± 17	86 ± 15	65 ± 11	88 ± 20	85 ± 17	92 ± 15
Q_T, l/min	6.4 ± 1.4	11.7 ± 2.0	14.9 ± 2.1^†	13.5 ± 2.0	5.2 ± 1.1	11.3 ± 3.3	12.3 ± 3.2	13.6 ± 2.5
PASP, mmHg	31.7 ± 7.2	44.2 ± 10.7	49.8 ± 9.0	50.0 ± 11.5	31.2 ± 6.7	39.6 ± 7.6	44.5 ± 7.1	42.8 ± 8.5
TPR, mmHg·l⁻¹·min⁻¹	5.08	3.90	3.35	3.71	6.22	3.77	3.88	3.19
TPR (HCT), mmHg·l⁻¹·min⁻¹	5.64	4.34	3.53	3.26	6.91	4.19	4.08	3.36
$S a_{O_{2}}$	77.7 ± 7.2	65.7 ± 7.5	66.3 ± 6.9	65.6 ± 8.2	76.3 ± 2.1	68.6 ± 5.4	66.6 ± 5.8	67.3 ± 3.9
$C a_{O_{2}}$ , ml O₂/dl	15.0 ± 2.1	13.3 ± 1.1	13.5 ± 1.4	13.6 ± 1.4	14.9 ± 2.5	13.5 ± 1.6	12.5 ± 1.0	13.1 ± 1.1
pH	7.50 ± 0.05	7.49 ± 0.03	7.47 ± 0.04	7.43 ± 0.06	7.50 ± 0.03	7.48 ± 0.03	7.46 ± 0.04	7.42 ± 0.07
HCT, %	41.1 ± 4.8	40.6 ± 5.3	42.1 ± 3.9	44.4 ± 2.9	42.3 ± 4.2	42.1 ± 6.2	44.3 ± 4.6	43.3 ± 6.2
tHb, g/dl	13.2 ± 1.5	13.4 ± 1.6	13.9 ± 1.5	14.3 ± 1.1	13.2 ± 2.0	13.3 ± 1.5	12.9 ± 1.6	13.6 ± 1.6
Core temp, °C	37.1 ± 0.4	36.9 ± 0.8	36.9 ± 0.9	36.7 ± 1.1	37.2 ± 0.3	36.9 ± 0.6	36.9 ± 0.7	36.9 ± 0.8
Lactate, mmol/l	1.84 ± 0.69	3.34 ± 0.78	5.23 ± 1.26	7.88 ± 2.26	1.74 ± 0.88	3.59 ± 1.53	6.11 ± 3.08	8.48 ± 4.81
n	7	7	7	5	7	7	7	6

Values are means ± SD.

^†

P < 0.05 rest vs. exercise.