The Claim
In recreationally strength-trained adults, urinary N-terminal titin fragment (UTF) concentration increases 48 hours after performing 200 maximal eccentric knee extensions, with mean levels rising from 2.3 ± 1.8 to 3.3 ± 3.4 nmol/mg/dL, indicating that UTF may serve as a biomarker reflecting delayed muscle protein breakdown due to exercise-induced structural damage.
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 a tough leg workout, a certain protein in pee goes up two days later — this might show how much muscle damage happened during exercise.
See the scientific wording
In recreationally strength-trained adults, urinary N-terminal titin fragment (UTF) concentration increases 48 hours after 200 maximal eccentric knee extensions, with mean levels rising from 2.3 ± 1.8 to 3.3 ± 3.4 nmol/mg/dL, suggesting UTF may reflect delayed muscle protein breakdown associated with exercise-induced structural damage.
What the research says
1 studyThe study shows that after a tough leg workout, a protein fragment in urine goes up by 48 hours, just like the claim says, and this matches other signs of muscle damage.
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.