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What is Exercise-Associated Hyponatremia?

Introduction Exercise-associated hyponatremia (EAH) is a fluid-electrolyte disorder caused by a decrease in sodium levels (hyponatremia) during or up to 24 hours after prolonged physical activity. This disorder can develop when marathon runners or endurance event athletes drink more fluid, usually water or sports drinks, than their kidneys can excrete. This excess water can severely… Read More

by Andrew Marshall

Running Injuries & Illness 07

Running Illness Hyponatraemia and Fluid Replacement Individuals who attempt long distance events such as marathons will recognise the need to maintain adequate hydration. Over-hydration can, however, lead to severe illness in the form of exercise-associated hyponatraemia (EAH), which is defined as serum sodium of less than 135 mmol/l during or up to 24 hours after… Read More