The Claim
Acute post-exercise elevations in systemic anabolic hormones (testosterone, growth hormone, IGF-1) do not meaningfully influence muscle protein synthesis or long-term hypertrophy in men or women, as demonstrated by studies showing identical muscle gains despite 4–5 fold differences in hormone levels.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Even if your body releases a lot more of the 'muscle-building' hormones after a workout, it doesn’t mean you’ll grow more muscle than someone whose hormone levels stay low—studies show both groups end up with the same muscle size.
See the scientific wording
Acute post-exercise elevations in systemic anabolic hormones (testosterone, growth hormone, IGF-1) do not meaningfully influence muscle protein synthesis or long-term hypertrophy in men or women, as demonstrated by studies showing identical muscle gains despite 4–5 fold differences in hormone levels.
What the research says
1 studyStudy: Load-induced human skeletal muscle hypertrophy: Mechanisms, myths, and misconceptions
This study says that even if your body releases a lot more muscle-building hormones after a workout, it doesn’t make your muscles grow bigger — what really matters is how hard you lift, not how much hormone you produce.
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.