The Claim

Sodium bicarbonate at a dosage of 0.3 g/kg body weight increases post-exercise blood lactate levels in non-professional cyclists, and the timing of this lactate elevation is not correlated with improvements in exercise performance, indicating that lactate serves as a marker rather than a direct mediator of fatigue delay.

Source: High doses of sodium bicarbonate increase lactate levels and delay exhaustion in a cycling performance test.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
49score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Taking sodium bicarbonate at 0.3 grams per kilogram of body weight raises blood lactate levels after cycling in non-professional athletes, but the timing of this rise does not match when performance improves, meaning lactate levels reflect physiological changes without directly causing reduced fatigue.

See the scientific wording

Sodium bicarbonate at 0.3 g/kg body weight increases post-exercise blood lactate levels in non-professional cyclists, but the timing of lactate elevation does not correlate with performance improvement, suggesting lactate is a marker rather than a direct cause of fatigue delay.

Why this might work

When sodium bicarbonate is consumed, it increases the blood's ability to neutralize acid. During intense cycling, muscles produce acid and lactate as they burn sugar without oxygen. The extra bicarbonate pulls the acid out of the muscles and into the blood, which lets the muscles keep working harder for longer. The lactate in the blood rises because it is produced along with the acid, but it does not cause the improved performance — it just shows that the acid is being removed.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: High doses of sodium bicarbonate increase lactate levels and delay exhaustion in a cycling performance test.

    Taking a specific dose of baking soda helped cyclists ride longer and raised their lactate levels, but a smaller dose raised lactate just as much without helping performance — so lactate isn’t what’s making them stronger, it’s just a sign that the baking soda is working.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.