The Claim

Multi-day low-dose sodium bicarbonate intake (0.2 g/kg/day for four days) in male recreational cyclists is associated with an approximately 9% increase in time-to-exhaustion compared to placebo, but this change does not reach statistical significance after FDR correction (FDR-adjusted p=0.040), indicating a trend without conclusive evidence of a performance benefit.

Source: Effects of acute and multi-day low-dose sodium bicarbonate intake on high-intensity endurance exercise performance in male recreational cyclists

What the research says

Supports is higher

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

Supports
74score
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.

Quantitative
1 study reviewed
In plain English

Male recreational cyclists who took sodium bicarbonate for four days at a dose of 0.2 grams per kilogram of body weight showed a 9% increase in time-to-exhaustion during exercise compared to those who took a placebo, but this difference was not statistically significant after adjusting for multiple comparisons.

See the scientific wording

Multi-day low-dose sodium bicarbonate intake (0.2 g/kg/day for four days) in male recreational cyclists increases time-to-exhaustion by approximately 9% compared to placebo, but this improvement does not reach statistical significance after correction for multiple comparisons (FDR-adjusted p=0.040), indicating a trend rather than a proven performance benefit.

Why this might work

When sodium bicarbonate is taken, it increases the level of bicarbonate in the blood. During intense exercise, muscles produce acid, which lowers pH and causes fatigue. The extra bicarbonate in the blood captures this acid and turns it into carbon dioxide and water. The carbon dioxide is then breathed out, which keeps the blood and muscles less acidic. This allows the muscles to keep working harder for longer before fatigue sets in.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Effects of acute and multi-day low-dose sodium bicarbonate intake on high-intensity endurance exercise performance in male recreational cyclists

    Taking baking soda for four days helped cyclists ride a little longer in a tough test — about 9% longer on average — but the result wasn't strong enough to say for sure it wasn't just luck. So it might help, but we can't be certain.

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

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