Analysis Version
v1
History
Back to Study: Acute L-arginine supplementation reduces the O2 co...
correlational
Analysis v1
39
Pro
0
Against

Taking 6 grams of L-arginine might help young men exercise harder for longer before getting tired, by about a quarter more time than usual.

Claim Language

Language Strength

association

Uses association language (linked to, correlated with)

The claim uses the phrase 'is associated with', which indicates a statistical relationship without asserting causation. This language implies correlation rather than direct cause-and-effect.

Context Details

Domain

exercise_science

Population

human

Subject

L-arginine supplementation (6 g) in healthy young men (aged 19–38 years)

Action

is associated with

Target

a 26% increase in time to exhaustion during severe-intensity exercise, indicating enhanced exercise tolerance

Intervention Details

Type: supplement
Dosage: 6 g

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Evidence from Studies

Supporting (1)

39
39

Acute L-arginine supplementation reduces the O2 cost of moderate-intensity exercise and enhances high-intensity exercise tolerance.

Randomized Controlled Trial
Human
2010 Nov

Scientists gave 6 grams of L-arginine to young men and found they could exercise longer before getting tired — exactly 26% longer — which is what the claim says.

Contradicting (0)

0
No contradicting evidence found

Source Study

Acute L-arginine supplementation reduces the O2 cost of moderate-intensity exercise and enhances high-intensity exercise tolerance.

Score: 39
DOI: 10.1152/japplphysiol.00503.2010

Similar Assertions

Taking 6 grams of L-arginine might help young men use less oxygen when they exercise at a steady pace, which could mean their body works more efficiently.

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Taking 6 grams of L-arginine might help young men exercise harder without getting as out of breath, because their bodies use oxygen more steadily during tough workouts.

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Taking arginine supplements for just three days won’t make you stronger or more powerful during short, intense workouts like sprinting or lifting heavy weights—even if you’re already a well-trained athlete.

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Taking a specific amino acid supplement called L-arginine every day for three weeks might make people feel less tired when they exercise, after having a heart attack and while doing heart rehab — compared to taking a sugar pill.

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Taking a daily L-arginine supplement for two weeks might help young men recover faster from bike workouts by reducing a chemical in their blood that signals muscle damage.

0
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