After college guys run a really hard 400-meter sprint, their explosive jumping power stays about 10% lower the next day, showing their muscles are still tired even a full day later.

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Pro

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Against

Evidence from Studies

Supporting (1)

31

Community contributions welcome

31

Effects of high-intensity sprint exercise on neuromuscular function in sprinters: the countermovement jump as a fatigue assessment tool

Cross-Sectional Study

Human

2024

The study shows that after a hard 400 m sprint, male college sprinters still have weaker jump power the next day, especially in the pushing-up phase, which supports the idea that their muscles are still tired.

Contradicting (0)

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No contradicting evidence found

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Source Study

Effects of high-intensity sprint exercise on neuromuscular function in sprinters: the countermovement jump as a fatigue assessment tool

Score: 31

DOI: 10.7717/peerj.17443

Similar Assertions

Even when male college sprinters say they feel back to normal after a hard 400-meter race, their leg power is still down by over 7% the next day — meaning their muscles might not be fully recovered even if they feel fine.

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After running a 400-meter sprint really fast, college sprinters aren't as powerful when jumping — especially in the first part of the jump — and this weakness can last up to a full day.

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After a really hard sprint, college male runners seem to jump differently for over a day — their muscles spend more time stretching and less time shortening, which might be their body’s way of adjusting after intense effort.

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Both training methods made athletes jump higher and turn faster, but didn’t make them run straight-line sprints any faster.

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