After a super intense 30-second sprint, sprint athletes have higher levels of certain chemicals in their blood and more acidic blood than endurance athletes during recovery — which means their bodies...

Pro

Against

Evidence from Studies

Supporting (1)

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Growth hormone responses to treadmill sprinting in sprint- and endurance-trained athletes

Cross-Sectional Study

Human

1996

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

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Source Study

Growth hormone responses to treadmill sprinting in sprint- and endurance-trained athletes

Score: 43

DOI: 10.1007/BF00242276

Similar Assertions

Even though the person gets much weaker during their 10th sprint compared to the first, their muscles aren’t producing more lactic acid — which is weird because their stress hormone (epinephrine) is high, and you’d expect lactic acid to rise. So something is shutting down the energy system that usually makes lactic acid.

70%