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Table 1 List of variables

From: The physiological effects of hypobaric hypoxia versus normobaric hypoxia: a systematic review of crossover trials

Oxygenation and ventilation Cardiovascular AMS (acute mountain sickness) and neurology Other
Ventilation (VE) Hypoxic cardiac response (HCR) Postural stability Sweat rates
Tidal volume (VT) Forced vascular conductance
Lake Louise AMS scores Oesophageal temperature thresholds for increasing forearm skin vascular conductance
Respiratory rate (Bf) Heart rate variability (LH/HF)
Exhaled nitric oxide (NO) levels (exNO) Oesophageal temperature thresholds for increased sweat rate
Heart rate (HR)
Oesophageal temperature
End tidal partial pressure of oxygen (PetO2) Stroke volume (SV) Skin temperature
Urine volume
Cardiac output (CO) Plasma volume
End tidal partial pressure of carbon dioxide (PETCO2) Glomerular filtration rate (GFR)
Plasma potassium concentration (plasma K+)
Plasma sodium concentration (plasma Na+)
Blood pressure (BP)
Plasma renin activity
Plasma aldosterone
Alveolar ventilation (VA) Free water clearance
Adrenocorticotropic hormone (ACTH)
Volume of CO2 produced (VCO2)
Anti-diuretic hormone (ADH)
Anti-naturetic protein (ANP)
Blood base excess
Urine sodium-potassium ratio (urine Na+/K+)
Volume of oxygen consumed (VO2)
Catecholamines, plasma osmolarity
End tidal fraction of oxygen (FetO2) Urine osmolarity
Plasma lactate levels
Blood NO metabolites
Glutathione peroxidase (GPX)
End tidal fraction of oxygen (FetCO2) Plasma advanced oxidation protein products and superoxide dismutase
Duration of inspiration and expiration Haematocrit (Hct)
Haemoglobin concentration (Hb conc)
Hypoxic ventilatory response (HVR)
Respiratory quotient (RQ)
Peripheral oxygen saturations (SpO2)
Arterial oxygen saturations (SaO2)
Arterial oxygen and carbon dioxide partial pressure (PaO2) (PaCO2)
Arterial oxygen content
Alveolar-arterial PO2 difference
  1. All the variables measured in the 13 accepted studies are listed. These have been subdivided into physiological systems.