Sodium Bicarbonate to Enhance Sports Performance

Javier Colomer 4 min. of reading Sport Performance Leave a comment

Beyond creatine or beta-alanine, there’s a lesser-known but fascinating ergogenic aid: sodium bicarbonate. During intense (anaerobic) exercise, your muscles produce lactate, increasing acidity (lowering pH) and causing that ‘burn’ which limits your performance.

Although your body has its own buffer systems (like carnosine and phosphate) to neutralise this acidity, they are not always sufficient during maximal efforts. This is where sodium bicarbonate comes into play:

This natural compound acts as a powerful buffer, helping to counteract muscle acidity, delay fatigue, and enable you to perform at your best for longer, whether you’re a beginner or a professional athlete.

Index

1 How Does Sodium Bicarbonate Work?
2 Scientific Evidence
3 How to Integrate Sodium Bicarbonate into Your Sports Routine
4 Side Effects of Bicarbonate

How Does Sodium Bicarbonate Work?

1 Buffers Acidity

When ingested, bicarbonate raises blood pH (alkalisation), creating a chemical gradient that facilitates the removal of lactic acid from muscles into the bloodstream. This directly reduces muscle acidosis (low pH in tissues).

2 Shields Metabolic Processes

It neutralises the acidic environment that inhibits phosphofructokinase (a key glycolysis enzyme). By preserving this energy pathway:

It maintains optimal ATP production.
Delays the onset of fatigue.

3 Boosts High-Intensity Performance

By buffering lactate accumulation:

It increases time to exhaustion.
Allows you to sustain peak intensities for longer.
It’s particularly effective in efforts lasting 1–7 minutes (400–1500m, short-distance swimming, HIIT, cross-training).

4 Strengthens Natural Buffers

Enhances the body’s buffer systems (carnosine and phosphate), acting as an external ally against acid build-up during sprint intervals or explosive exercises.

Scientific Evidence

Research into the benefits of sodium bicarbonate dates back to the 1930s. More recent studies have shown that sodium bicarbonate supplements enhance athletic performance during short-duration activities, according to an article published in the journal ‘Food and Nutrition Sciences’.

Examples of such events include 400 to 1500 metre races, 100 to 400 metre swimming events, rowing, and team sports that involve repeated bouts of high-intensity activity.

Of course, it’s also worth noting that as we improve our athletic capacity through proper training, we become better at managing lactic acid.

How to Integrate Sodium Bicarbonate into Your Sports Routine

If you’re looking to maximise endurance and delay fatigue, RawSeries powdered sodium bicarbonate is a simple and effective option to prepare your own pre-workout supplement.

Sodium Bicarbonate Powder by RawSeries

For those who prefer a stimulant-free pre-workout formula, with complementary ingredients (such as creatine), Evostamina by SportSeries offers an all-in-one solution designed for intense efforts.

Evostamina by SportSeries

The optimal dose of sodium bicarbonate ranges between 0.2–0.3 g/kg of body weight, split into 3–4 servings and taken 60–90 minutes before training. However, these amounts may cause gastrointestinal discomfort (nausea, diarrhoea, cramps), so it is recommended to:

Gradually adjust the dose to assess tolerance.
Take it with plenty of water and sip slowly to minimise adverse effects.
Evaluate individually whether the benefits outweigh the possible discomfort, as effectiveness varies from person to person.

Side Effects of Bicarbonate

High doses of bicarbonate may cause gastric and intestinal discomfort. That’s why initial doses should be moderate to assess tolerance. The taste is not everyone’s favourite either…

Theoretically, it is possible to induce a state of metabolic alkalosis with sodium bicarbonate (just as dangerous as acute acidosis), so recommended doses should never be exceeded.

Another potential side effect is the high amount of sodium intake, which may influence blood pressure. Sodium bicarbonate should not be used by people with kidney failure unless supervised by a doctor.

Excessive consumption of sodium bicarbonate may increase potassium excretion, leading to potassium deficiency; it’s advisable to consume potassium-rich foods if used long-term.

Sources

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