The Claim

Higher body mass is associated with greater performance benefit from sodium bicarbonate supplementation in endurance runners.

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.

Correlation
1 study reviewed
In plain English

Endurance runners with higher body mass show greater performance improvements when taking sodium bicarbonate compared to runners with lower body mass.

See the scientific wording

Higher body mass is associated with greater performance benefit from sodium bicarbonate in endurance runners, suggesting that larger athletes may derive more ergogenic advantage from this supplement.

Why this might work

Larger athletes produce more acid during intense running because they have more muscle mass generating energy without oxygen. Sodium bicarbonate in the blood soaks up this acid, keeping muscles from getting too acidic. This lets muscles keep contracting strongly for longer, so bigger athletes gain more benefit from the supplement.

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

    The study found that heavier runners tended to get a bigger performance boost from baking soda than lighter ones, which supports the idea that bigger athletes benefit more because they produce more acid during hard exercise.

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.