The Claim
Ingesting 0.3 g·kg⁻¹ of sodium bicarbonate in a carbohydrate hydrogel 90 minutes before exercise improves 40 km cycling time trial performance by approximately 1.2% in trained male cyclists under acute normobaric hypoxia (~1850 m) due to enhanced extracellular buffering capacity that delays acidosis-induced fatigue during prolonged high-intensity effort.
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.
Trained male cyclists who consume 0.3 grams of sodium bicarbonate per kilogram of body weight in a carbohydrate gel 90 minutes before cycling 40 kilometers under simulated high-altitude conditions complete the ride 1.2% faster because the sodium bicarbonate reduces the buildup of acid in their blood during intense effort.
See the scientific wording
Ingesting 0.3 g·kg⁻¹ of sodium bicarbonate in a carbohydrate hydrogel 90 minutes before exercise improves 40 km cycling time trial performance by approximately 1.2% in trained male cyclists under acute normobaric hypoxia (~1850 m), likely due to enhanced extracellular buffering capacity that delays acidosis-induced fatigue during prolonged high-intensity effort.
Sodium bicarbonate in the blood neutralizes acid produced by muscles during hard exercise, allowing muscles to keep contracting strongly for longer. This happens because the bicarbonate pulls acid out of muscle cells and turns it into gas that is breathed out, while also improving the electrical balance in muscle cells so they respond better to nerve signals.
What the research says
1 studyCyclists who took a baking soda gel 90 minutes before a 40-km ride in thin air finished 1.2% faster because the baking soda helped neutralize the acid that builds up during hard exercise, without causing stomach problems.
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.