The Bohr Effect describes how carbon dioxide (CO₂) facilitates oxygen release from hemoglobin in tissues. As CO₂ increases (e.g., in active muscle), hemoglobin's affinity for oxygen drops, releasing more O₂ where it is needed. Low CO₂ (e.g., from over-breathing) keeps oxygen "locked" on hemoglobin — a form of "oxygen debt" despite ample air.
Key Implications
- •Over-breathing — reduces tissue oxygenation despite normal blood oxygen
- •Breath-hold training — increases CO₂ tolerance, improving O₂ delivery under stress
- •BOLT — breath-hold time correlates with CO₂ tolerance and Bohr effect efficiency
In ONDA Life
The CO2 Tolerance article covers BOLT test, box breathing, and apnea tables to optimize gas exchange via the Bohr effect.