Figure 3From: Control and sensation of breathing during cycling exercise in hypoxia under naloxone: a randomised controlled crossover trialThe top panel shows normalised integrated vastus lateralis surface electromyogram (iEMG) vs. power output. The middle panel presents the arterialized blood lactate concentration [La] vs. power output. The bottom panel presents the arterial oxygen saturation (earlobe oximetry) vs. power output.Back to article page