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MYTH BUSTER
DAVID EPSTEIN
August 08, 2011
NO. 4: OXYGEN MASKS AID RECOVERY
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August 08, 2011

Myth Buster

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NO. 4: OXYGEN MASKS AID RECOVERY

In a study, exhausted soccer players were given masks to breathe into. They received a placebo of normal air (about 20% oxygen) and then 100% oxygen (sideline masks deliver up to 50% oxygen). More oxygen didn't speed their recovery at all. Why? They already have as much oxygen in their blood as they can take, they're just not able to deliver it quickly enough to their cells.

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