A recent study published in Medicine & Science in Sports & Exercise examined carbohydrate intake during endurance cycling. Marathon Handbook reports that the study found no significant performance benefit from consuming 150 grams of carbs per hour compared to 120 grams.

Eight endurance-trained cyclists tested carb intakes of 10, 90, 120, and 150 grams per hour. The study found that while higher intake increased carbohydrate oxidation, it did not improve exercise capacity. The average estimated optimum was 107 grams per hour, though this was not tested directly. Read more culture coverage.

The study highlights the importance of personalizing fueling strategies. Individual responses varied widely, and higher intakes sometimes coincided with gastrointestinal discomfort. The findings suggest that increasing carb intake should be based on specific training needs and individual tolerance. Related: Couple Engaged During Toronto Waterfront Marathon.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.