HUMAN NUTRITION

Detailed explanation-1: -Proteins, fats and carbohydrates are all possible sources of fuel for exercise and muscle contraction. During moderate-intensity exercise, roughly half of the energy is derived from glycogen, while the other half comes from glucose in the blood and fatty acids.

Detailed explanation-2: -Consuming carbohydrates during exercise lasting longer than 60 minutes ensures that the muscles receive adequate amounts of energy, especially during the later stages of the competition or workout. This has also been found to improve performance. The form of carbohydrates consumed does matter.

Detailed explanation-3: -Consuming protein with carbohydrates immediately after exercise will increase the restoration rate of muscle glycogen stores. However, protein does not enhance the restoration rate of muscle glycogen stores when intakes of carbohydrate are insufficient. Most athletes’ regular diets provide ample protein.

Detailed explanation-4: -1–4 Although protein and dietary fat can provide necessary energy to perform physical activity, carbohydrate is the only macronutrient that can be broken down rapidly enough to provide energy during periods of high-intensity exercise.