Figure 3
From: Effect of acute hypoxia on respiratory muscle fatigue in healthy humans
Ratio of oesophageal and gastric twitch pressures (P oes,tw /P ga,tw ) during cervical magnetic stimulation before, immediately after and 30 min after the 15-min hyperpnoea test in normoxia (diamond), hypoxia (triangle) and hyperoxia (square). Values are mean ± SD. All values were significantly reduced immediately after and 30 min after hyperpnoea compared to before hyperpnoea.