Endurance is greatest when the diet contains a higher proportion of calories from:
A)individual amino acid supplements.
B)protein.
C)carbohydrate.
D)fat.

Question

Quizplus · Accepted Answer

Carbohydrates are the primary energy source for the body during exercise, especially endurance exercise. Carbohydrates are broken down into glucose, which is then stored in the muscles as glycogen. During exercise, glycogen is broken down to release energy for the muscles to use. Studies have shown that a diet high in carbohydrates can improve endurance performance by increasing glycogen stores in the muscles. In contrast, diets high in protein or fat do not provide as much energy as carbohydrates and can even impair endurance performance by causing fatigue and muscle breakdown.

Endurance Is Greatest When the Diet Contains a Higher Proportion