title: Fuel utilization in marathons: implications for performance.
mesh_terms: D001786:Blood Glucose / Q000378:metabolism; D004734:Energy Metabolism; D005230:Fatty Acids, Nonesterified / Q000378:metabolism; D006003:Glycogen / Q000378:metabolism; D006801:Humans; D009132:Muscles / Q000378:metabolism; D012420:Running; D014280:Triglycerides / Q000378:metabolism
chemical_list: D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D014280:Triglycerides; D006003:Glycogen