How much sodium per hour in endurance sports?
Sodium for endurance is controlled first by the concentration of the drink, then by conversion to mg/h according to the volume actually drunk.
Article outline
Key takeaways
Point 1
The main operational benchmark is the mg/L concentration.
Point 2
The conversion to mg/h depends directly on the volume drunk per hour.
Point 3
Adjustments must be gradual, especially in heat.
Point 4
The goal is water balance, not a promise of performance.
1) Practical framework: starting from mg/L
Thinking first in mg/L allows you to control the drink concentration and avoid risky estimates.
Then, the actual hourly dose is obtained by multiplying this concentration by the volume actually drunk per hour.
2) Adjust according to conditions
When heat and sweating increase, water volume increases. The sodium concentration must then remain consistent to avoid dilution.
In cooler conditions, keeping the concentration too high can harm palatability and execution.
3) Field verification
Validate on comparable sessions with simple monitoring: volume drunk, actual intake, digestive sensations and consistency of energy.
Changing a single parameter at a time gives more reliable corrections than a global change.
4) Integrate into the overall plan
Sodium should be related to carbohydrate intake and total drink. An isolated approach often creates inconsistencies.
The calculator helps convert this data into directly executable time targets.
FAQ
Why not think only in mg/h?
Because the concentration of drink influences tolerance and drinkability; mg/L remains essential.
Does sodium prevent all cramps?
No. Cramps are multifactorial; sodium is one lever among others.
Can I add drinks, gels and capsules?
Yes, but you must calculate the total hourly sodium to avoid concentration errors.
Should I change the concentration each time out?
No. Stabilize a base then adjust only when conditions really change.
References
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