Figure 2. Measured parameters in relative terms in normoxia and hypoxia. P: power; HR: heart rate; La: lactate concentration; V_E: ventilation; VO₂: oxygen uptake; VCO₂ CO₂ release; tidal volume (VT); breathing rate (BR); EQO₂: ventilatory equivalent for O₂; EQCO₂: ventilatory equivalent for CO₂; RER: respiratory exchange ratio.