Carbohydrate ingestion attenuates cognitive dysfunction following long-duration exercise in the heat in humans.

Introduction: To determine if electrolyte or carbohydrate supplementation vs. water would limit the magnitude of dehydration and decline in cognitive function in humans following long-duration hyperthermic-exercise.

Methods: 24 subjects performed 3 visits of 2 h walking (3mph/7% grade) in an environmental chamber (33 °C/10% relative humidity).