Figure 1From: The normobaric oxygen paradox: does it increase haemoglobin?Comparison between haemoglobin variations after 30 minutes of 100% O2 breathing every day or every other day. **Statistically significant difference from baseline (P < 0.01) for oxygen breathing every other day (protocol B). §§Statistically significant difference from baseline (P < 0.01) for Oxygen breathing each day (protocol A).Back to article page