The Claim
Ingestion of sodium bicarbonate at a dosage of 0.3 g·kg⁻¹ body mass is associated with higher preexercise gastrointestinal symptom scores in highly trained female CrossFit athletes compared to placebo and sodium citrate.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Highly trained female CrossFit athletes who consume sodium bicarbonate at 0.3 grams per kilogram of body weight report more gastrointestinal symptoms before exercise than those who take a placebo or sodium citrate.
See the scientific wording
Sodium bicarbonate ingestion at 0.3 g·kg⁻¹ body mass is associated with higher preexercise gastrointestinal symptom scores compared to placebo and sodium citrate in highly trained female CrossFit athletes, suggesting a trade-off between performance benefit and gastrointestinal discomfort.
When someone swallows a large dose of sodium bicarbonate, it draws water into the stomach and releases carbon dioxide gas as it reacts with stomach acid. This stretches the stomach wall and creates a local chemical imbalance, which activates pain-sensing nerves in the gut, causing nausea, bloating, and discomfort before exercise.
What the research says
1 studyThe study found that taking this specific dose of baking soda before exercise made female CrossFit athletes faster but also gave them more stomach upset than taking nothing or another supplement called sodium citrate. So yes, it helps performance but hurts your stomach.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.