The Claim

Oral single-dose sodium bicarbonate (0.3 g/kg) has a negligible effect on continuous running performance in mixed-sex human populations, with a standardized mean difference of 0.18 (95% CI: -0.01 to 0.36) after adjusting for gastrointestinal withdrawal and publication bias, indicating no meaningful ergogenic benefit for endurance running events lasting 1–30 minutes.

Source: Negligible benefit of oral single-dose sodium bicarbonate on continuous running performance: systematic review with meta-analysis of randomized, double-blind, placebo-controlled trials

What the research says

Supports is higher

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

Supports
70score
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

Taking a single dose of sodium bicarbonate at 0.3 grams per kilogram of body weight does not meaningfully improve running performance during continuous endurance events lasting 1 to 30 minutes in men and women.

See the scientific wording

Oral single-dose sodium bicarbonate (0.3 g/kg) has a negligible effect on continuous running performance in mixed-sex populations, with a standardized mean difference of 0.18 (95% CI: -0.01 to 0.36) after adjusting for gastrointestinal withdrawal and publication bias, indicating no meaningful ergogenic benefit for endurance running events lasting 1–30 minutes.

Why this might work

Taking sodium bicarbonate increases the blood's ability to neutralize acid produced by muscles during intense running. This acid normally slows down muscle energy production and weakens contractions. Even though the acid is buffered, the muscles still reach the same point of fatigue during continuous running, so performance does not improve.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Negligible benefit of oral single-dose sodium bicarbonate on continuous running performance: systematic review with meta-analysis of randomized, double-blind, placebo-controlled trials

    This study found that taking baking soda before a short, continuous run doesn’t really help men and women run faster together, even after accounting for people who got sick stomachs or studies that might have been biased. So, it supports the idea that it doesn’t work well for most people.

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

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