Table 5.

Resume of cardiorespiratory variables evaluated at maximum exercise that work at several altitudes.

	Altitude (m)
	Sea level	1,600	2,500
Intensity (Watts)
Rest	0	0	0
Maximum	174 ± 33	198 ± 25	173 ± 27
VO2 (mlO2/kg/min)
Rest	3.6 ± 0.7	3.5 ± 0.9	3.1 ± 0.8
Maximum	25.9 ± 5.8†	22.9 ± 4.8†	19.2 ± 5.3* †
VO2 (mlO2/kg (BLM)/min)
Rest	5.0 ± 1.0	4.8 ± 1.2	4.2 ± 1.1
Maximum	36.1 ± 6.2†	31.2 ± 5.1†	26.6 ± 6.2* †
RER
Rest	0.84 ± 0.09	0.90 ± 0.10	0.86 ± 0.07
Maximum	1.20 ± 0.19†	1.27 ± 0.15†	1.23 ± 0.17†
VE (L/min)
Rest	8.9 ± 2.4	9.4 ± 3.1	9.6 ± 2.2
Maximum	65.6 ± 17.2†	79.3 ± 18.8†	69.3 ± 18.4†
Oxygen saturation (SpO2, %)
Rest	97.5 ± 0.5	94.5 ± 1.8*	92.8 ± 1.2* ‡
Maximum	93.2 ± 1.1†	90.2 ± 1.7* †	88.3 ± 1.9* †
HR (bpm)
Rest	71 ± 11	76 ± 10	80 ± 12*
Maximum	151 ± 16†	164 ± 14†	154 ± 16†

^*Mean ± SD vs. sea level (p < 0.05).

^†Mean ± SD vs. rest (p < 0.05).

^‡Mean ± SD vs. 1,600 m.

Heart rate (HR), Pulse oximetry (SpO2), and Ventilation (VE).