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Catalyst

L-tyrosineFinding

L-tyrosine has no detected effect on time to exhaustion

no difference foundVery limited evidenceFinding

01 · The sentence it was drawn from

“The sub-group analysis revealed no significant differences between tyrosine and placebo conditions for time to exhaustion (SMD = 0.02; p = 0.94) and time trial performance (SMD = -0.04; p = 0.85).”
Quoted verbatim from The effect of tyrosine supplementation on whole-body endurance performance in physically active population: A systematic review and meta-analysis including GRADE qualification.
This finding among the 18 findings on its endpoint

L-tyrosine

Time to exhaustion

no difference found

Effect as reported

0.02standardised mean difference

Who
Physically active people; pooled placebo-controlled trials of tyrosine supplementation (10 interventions from 8 studies in the review overall); time-to-exhaustion task stratum
Dose studied
not reported

Very limited evidencePMID 38290812 · 2023

02 · The study

Study
meta-analysis
Duration
not reported

Evidence, by strength

  • strong
  • moderate
  • limited
  • very limitedthis finding
  • insufficient

03 · The paper

Journal of sports sciences
What else it reported1 finding · 1 compound · 1 endpoint

04 · To cite this finding

This address does not change

https://catalystproject.ai/e/01M6ZVSG0PA4X0YAN88G03Y87H