HUMNNTR 2210 Lecture Notes - Lecture 20: Glycogen, Phosphocreatine, Performance-Enhancing Substance

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Main fuel source for many types of activities. Consume about 60% of total kcal from carbohydrate. At least 6g of carbohydrate/kg of body weight. Sports nutrition experts recommend up to 1. 7 g/kg for athletes. Needs are easily met by a normal diet: protein supplements are not necessary, excessive protein has not been shown to be beneficial. Section 10. 5: specialized advice for endurance, strength, and power athletes. Tapering of exercise while increasing carbohydrate intake. Strength and power athletes: strategies to enhance muscle gain. Due to additional lean muscle mass, calories need to be higher. Phosphocreatine (pcr) and carbohydrates for brief bursts of activity, little protein. Tends to be emphasis on protein: most needed early, in building phase, reduced need in maintenance. Consuming more protein than recommended offers no advantage. Adequate carbohydrate ingestion, immediately before/after exercise: 4-7 g/kg body weight. Creatine supplements an option in power sports.

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