Randomized Trialhigh evidence
Application of 13C MRS demonstrates carbohydrate feeding spares muscle but not liver glycogen utilisation during high-intensity interval exercise.
American journal of physiology. Endocrinology and metabolism·August 4, 2026·PMID 42552237
Why it mattersUnderstanding how carbohydrate feeding and multi-ingredient supplements alter substrate utilization during HIIT can guide nutritional strategies to optimize performance and recovery in athletes.
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