Tomporowski, P. D., Cureton, K. J., & Stueck, M. (2003). Effects of fluid intake during prolonged exercise on cognitive thinking. Medicine and Science in Sports and Exercise, 35(5), Supplement abstract 129.

This investigation attempted to determine if the detrimental effects of prolonged exercise can be offset by carbohydrate-electrolyte (CHO-E) supplements ingested during exercise. The cognitive performance of highly trained women (N = 10) was assessed on four occasions before and following moderate exercise (115 min of cycling alternating 15-min periods of 60% and 75% VO2max) and a 5-min maximal performance test. Ss were given one of three CHO-E or a placebo drink before exercising. The Paced Auditory Serial Addition task was completed before and 30-min after exercise and during a non-exercise control session.

Cognitive performance improved significantly after exercise and was independent of the supplement consumed. It was also better than in the non-exercise condition.

Implication Cognitive performance after prolonged exercise is facilitated and may be assisted by fluid intake.

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