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Table 1 Polysomnography of the participant

From: Electrolysis of water is an effective source of oxygen at high altitude

  Hydrogen/oxygen mixed gas (34 days) Conventional oxygen supplementation (51 days) P*
Location Gamba County Rikaze City  
Altitude About 4700 m About 3800 m  
SpO2 (%) 93.2 [91.5, 94.2] 94.0 [92.7, 94.6] 0.050
Pulse rate (/min) 61.0 [59.7, 62.3] 61.2 [59.5, 63.2] 0.335
AHI 13.7 [10.0, 18.9] 12.6 [8.8, 17.2] 0.280
  1. SpO2: peripheral saturation of oxygen; AHI: apnea-hypopnea index
  2. *Compared by Mann–Whitney U test