Even if your hormones spike after a tough workout, that doesn’t mean you’ll grow bigger muscles or get stronger over 12 weeks of training — the spike and the results don’t seem to go together.
Claim Language
Language Strength
association
Uses association language (linked to, correlated with)
The claim uses 'are not correlated with,' which explicitly refers to a statistical association or lack thereof, not causation or probability. This language indicates a relationship (or absence thereof) between two variables without implying directionality or mechanism.
Context Details
Domain
exercise_science
Population
human
Subject
acute post-exercise surges in systemic anabolic hormones—including testosterone, growth hormone, IGF-1, cortisol, and DHEA
Action
are not correlated with
Target
muscle hypertrophy or strength gains in resistance-trained young men undergoing 12 weeks of resistance training to volitional failure
Intervention Details
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
Neither load nor systemic hormones determine resistance training-mediated hypertrophy or strength gains in resistance-trained young men
Even though people’s hormone levels spiked after workouts, those spikes didn’t make them grow bigger muscles or get stronger—whether they lifted heavy or light weights, as long as they pushed to failure.