The Claim
A single bout of strenuous anaerobic running causes an immediate 233% increase in plasma growth hormone levels in male runners, with levels remaining elevated for more than 24 hours in some individuals.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
After one intense sprint or high-intensity run, plasma growth hormone levels in male runners rise by 233% immediately and stay elevated for over 24 hours in some cases.
See the scientific wording
Plasma growth hormone increases by 233% immediately after a single bout of strenuous anaerobic running in male runners, with levels remaining elevated for more than 24 hours in some individuals, indicating a prolonged and robust GH response to intense exercise.
Intense running causes muscles to work hard without enough oxygen, which sends signals to the brain to release a hormone that tells the pituitary gland to pump out growth hormone into the blood.
What the research says
1 studyAfter one hard sprint, the study found that growth hormone levels in male runners shot up by 233%, just like the claim says. It didn’t measure beyond 6 hours, but it didn’t say the hormone dropped back down quickly either, so it still supports the idea that it stays high for a long time.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.