How diet affects muscle fat stores and endurance performance

Muscle triglyceride concentration was significantly higher after a high-fat diet compared to a high-carbohydrate diet following a 24-hour fasting period.

• Muscle triglyceride levels before and after a 120-minute cycling bout were not significantly different between the high-carbohydrate and high-fat diets.
• After a 24-hour fasting period, muscle triglyceride levels were higher in the high-fat diet trial than in the high-carbohydrate trial.
• Self-paced cycling time was significantly longer for participants on the high-fat diet compared to those on the high-carbohydrate diet.

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