The Claim
Among five male runners, the most fit individual demonstrated a greater increase in luteinizing hormone, testosterone, androstenedione, and cortisol concentrations following strenuous anaerobic running, while the least fit individual demonstrated a higher growth hormone response.
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.
In a group of five male runners, the fittest runner had larger increases in luteinizing hormone, testosterone, androstenedione, and cortisol after intense running, while the least fit runner had a larger increase in growth hormone.
See the scientific wording
Among five male runners, the most fit individual exhibited a greater increase in luteinizing hormone, testosterone, androstenedione, and cortisol after strenuous anaerobic running compared to the least fit individual, who showed a higher growth hormone response, suggesting fitness level may modulate the hormonal response pattern to intense exercise.
Highly fit individuals activate their hormone systems for sex and stress more strongly during intense exercise, while their body suppresses growth hormone release. Less fit individuals rely more on growth hormone instead.
What the research says
1 studyIn a small group of runners, the fittest one had bigger spikes in testosterone and stress hormones after a hard sprint, while the least fit one had a much bigger spike in growth hormone — showing that how your body reacts to intense exercise depends on how fit you are.
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.