hintlNutrition & energyessential amino acids
essential amino acids and nutrition & energy: what the evidence shows
EAA（必須アミノ酸） · essential amino acids · Last updated:
hintl editorial team / Nutrition Desk
Nutrition genre desk — research review
Key points
No clear difference has been shown.
For fatigue · 4 studies · 167 participants
hintl Evidence Score 33/100 (4 studies, confidence low).
Evidence at a glance
How does essential amino acids affect fatigue?
not supported by evidenceHow the 33 is built
- Study design base
- randomized controlled trial
- +30/40
- RCT bonus
- 2 RCTs
- +10/15
- Study count bonus
- 4 studies
- +8/10
- Participants bonus
- Total 167 participants
- +5/20
- Consistency bonus
- results differ
- 0/10
- Contradiction penalty
- human studies mix benefit with no effect or harm
- -20/20
No clear difference has been shown.
- 3 human studies (167 participants total)
- Studies disagree with each other
References
This page's evaluation is based on the following peer-reviewed studies (3). Each link goes directly to the primary source (PubMed / DOI).
- Effects of Essential Amino Acids on High-Intensity Interval Training Performance, Fatigue Outcomes, and Workload Progression.randomized controlled trial (RCT) · Journal of the American Nutrition Association · 2023
- Branched-Chain Amino Acids Depletion during Hemodialysis Is Associated with Fatigue.cross-sectional study · American journal of nephrology · 2020
- Branched-chain amino acids and central fatigue.other study · The Journal of nutrition · 2006
Things to keep in mind
- The amount and quality of research is still limited, so the findings are not conclusive.
- For some outcomes, studies do not fully agree.
- Nutrients and foods are not medicines. If you have a medical condition, are pregnant, or take medication, check with your doctor or pharmacist.
Related items
Evidence Scores are computed mechanically from the published research (PubMed / Semantic Scholar / OpenAlex): study design, participant numbers, and consistency across studies. An LLM is used only to extract study data, never to decide a score.
This is research-based information, not medical advice, and not a diagnosis. Consult a qualified professional about your own situation.
hintl editorial team / Nutrition Desk
Nutrition genre desk — research review
We continuously check the published research and translate the technical language into plain terms. The policy is to report a trend in the research, never a flat claim that something "works".
This article was produced by an editorial system from published research and is managed by the editor-in-responsibility (Takuya Hirata, representative of AJARA LLC).