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Several possible studies

Story checked

Feeling the burn? It's not lactic acid (opens in a new tab)

medicalxpress.com · 2026-09-25

Short answerEvidenceSource

Short answer

Several possible studies

No clear answer.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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NewsLink checks it

Several studies could be the source of this story.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

Open claim evidence
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Several studies could fit.

More than one paper fits the article's details, and none fits well enough to single out. Checking claims against the wrong study would be worse than not checking them at all.

Source paper

Source layer

The 15 papers the story cites

Source study separated from background citations.

The research anchor for the report.

Related research

Research nearby

The papers it could be

Nearby papers when the source is unclear.

and 26 more considered

Then inspect each claim

Evidence layer

Claim by claim

What the story asserts. With no source study, there is nothing to check these against.

Claim 1 of 8Not checkedThe familiar burning sensation felt during exercise is not caused by lactic acid, despite the long-standing common explanation.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 2 of 8Not checkedEarly work on electrically stimulated amphibian muscle led scientists to associate lactic acid accumulation with fatigue, but the article says that work did not explicitly prove lactic acid caused muscle fatigue.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 3 of 8Not checkedThe article says lactic acid cannot exist in the body in that form; instead, exercise produces lactate and hydrogen.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 4 of 8Not checkedThe article says lactate does not make muscles more acidic; it reduces acidity by consuming hydrogen and can help people exercise harder for longer.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 5 of 8Not checkedThe article says lactate is produced and used even when oxygen is abundant, including at rest, and can serve as fuel for muscles, the heart, and the brain.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 6 of 8Not checkedThe article says lactate plays only a small part in muscle fatigue and has very little detrimental effect on exercise performance by itself.View evidenceHide evidence

As statedsmall part; very little detrimental effect

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 7 of 8Not checkedThe article says the burning sensation during intense exercise is due to specialized nerves responding to a combination of substances produced during exercise, not to a single chemical such as lactate.View evidenceHide evidence

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Claim 8 of 8Not checkedThe article says post-workout muscle soreness is not caused by lactic acid or lactate, because lactate returns to resting levels within about 30–90 minutes while soreness peaks one to three days later.View evidenceHide evidence

As statedwithin about 30–90 minutes; one to three days after a hard or new workout

Not checked

NewsLink could not identify one source study, so this claim was not compared against a paper.

Finally, the search trail

Method layer

No single source study was found.

NewsLink still surfaces nearby research so you can inspect the field instead of a single paper.

Nearby research

No exact source, but these papers are close.

Crossref, PubMed, Europe PMC · 29 candidate papers

And 24 more candidates considered.