The Claim
A 10-week high-intensity interval training program increases the testosterone-to-cortisol ratio in healthy male adolescents aged 14–16, reflecting a physiological adaptation characterized by enhanced anabolic signaling and reduced catabolic stress, independent of changes in absolute testosterone or cortisol concentrations.
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 healthy teenage boys aged 14 to 16, a 10-week program of high-intensity interval training raises the ratio of testosterone to cortisol, indicating a shift in the body's hormonal balance toward muscle-building processes and away from stress-related breakdown, without changing the total amounts of either hormone.
See the scientific wording
A 10-week high-intensity interval training program improves the testosterone-to-cortisol ratio in healthy male adolescents aged 14–16, which may reflect a physiological adaptation toward enhanced anabolic signaling and reduced catabolic stress, independent of changes in absolute hormone levels.
Intense, repeated bursts of exercise signal the brain to increase production of the muscle-building hormone and decrease production of the stress hormone, shifting the body's balance toward growth and recovery without changing the total amount of either hormone produced.
What the research says
1 studyAfter 10 weeks of intense interval training, teenage boys had more of the muscle-building hormone and less of the stress hormone, so their bodies were better balanced for growth and recovery.
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.