Potassium (K) and sports


Potassium is the main intracellular mineral as opposed to sodium, the main extracellular mineral.

Where to find potassium?

Potassium is mainly found in legumes, tubers, vegetables, bananas and chocolate.

Potassium and sports

Potassium is involved in many functions essential to athletes: transmission of nerve impulses, muscle contraction, carbohydrate metabolism, protein synthesis and acid-base balance.

It regulates water exchanges through the cell walls and has an hypotensive action on blood pressure.

Potassium needs

Needs amount to around 0.4 to 0.6g / day.

Our modern diet creates an imbalance between sodium and potassium with increased sodium and reduced potassium intakes. A diet rich in fruits and vegetables, and a reduced salt intake, will correct this imbalance.

In athletes, a loss of potassium due to sweat can occur during intensive workouts in warm conditions. 


Detailed information about:

Marie Fauchille
Dietician | Nutritionist
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