Endurance performance: what the evidence supports

3 graded interventions for endurance performance, ranked by strength of evidence.

Overall grade: Grade A
Last revised: Jul 10, 2026; 3
graded outcomes: 0
references listed

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

1 at grade A · 2 at grade C — 3 graded rows

What is known

Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.

Outcome	Grade	Effect size	Agreement
CaffeineWell established	Evidence grade A	Moderate	high
L-CitrullineLess consistent	Evidence grade C	Small	low
TaurineSmall, inconsistent	Evidence grade C	Small	mixed

CaffeineEvidence grade A
Well established
Moderatehigh
L-CitrullineEvidence grade C
Less consistent
Smalllow
TaurineEvidence grade C
Small, inconsistent
Smallmixed

What is uncertain

Read off the same rows as above. Nothing here is added that the entry does not itself record.

Thin evidence: L-Citrulline (grade C); Taurine (grade C).

The evidence in words

The evidence map

This is the ranked evidence for endurance performance: every compound in the knowledge base with a graded effect, best-supported first. Grades reflect replication and effect size, not popularity or marketing.

Best-supported

Caffeine (grade A) — Well established

Weaker or unproven

L-Citrulline (grade C) — Less consistent · Taurine (grade C) — Small, inconsistent

Goes with

CaffeineGrade AEvidence grade A
L-CitrullineGrade CEvidence grade B
TaurineGrade CEvidence grade C

Entries that share this one's tags or conditions.

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Antibiotic-associated diarrhea: what the evidence supports2 graded interventions for antibiotic-associated diarrhea, ranked by strength of evidence.Evidence grade B
Anxiety: what the evidence supports6 graded interventions for anxiety, ranked by strength of evidence.Evidence grade B
Benign prostatic hyperplasia: what the evidence supports3 graded interventions for benign prostatic hyperplasia, ranked by strength of evidence.Evidence grade C

Sources

This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.

Last revised Jul 10, 2026. A grade is this entry's reading of the evidence, not medical advice.