Episode 71 - Does taking sodium during exercise improve my hydration? | Dr Alan McCubbin

Fueling Endurance - Nutrition for Runners, Cyclists & Triathletes

Does replacing the sodium lost in sweat actually influence our thirst, our drinking and our hydration? If so, how much is enough? And do we need to measure our sweat sodium losses to give us the answers? In this episode Alan describes his recently published study where ultra-runners replaced 100% or 0% of their sodium losses during 5 hours of running in the heat, and what happened.

The study:

McCubbin AJ, Costa RJS. Effect of Personalized Sodium Replacement on Fluid and Sodium Balance and Thermophysiological Strain During and After Ultraendurance Running in the Heat. Int J Sports Physiol Perform. 2023;19(2):105-115. DOI: 10.1123/ijspp.2023-0295

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