Sports Nutrition Discussion Board 2

The video discusses the significance of exercise metabolism in sports nutrition, focusing on two main goals: reducing adiposity and muscle hypertrophy. It explains how different exercise intensities and nutrient types affect fat loss and muscle gain. For fat loss, lower intensity and longer duration exercises are recommended, along with a negative energy balance. For muscle gain, a higher caloric intake with sufficient amino acids is essential. The video also highlights the importance of understanding nutrient catabolism and metabolic states in achieving these goals.

Why is exercise metabolism crucial in sports nutrition?

• It provides a universal diet plan for all athletes.

• It focuses only on carbohydrate intake.

• It determines the best time to exercise.

• It helps in understanding the dietary needs of different athletes.

What is the primary fuel source during high-intensity exercise?

• Carbohydrates

• Proteins

• Fats

• Vitamins

Which exercise intensity is most effective for fat oxidation?

• No exercise

• Low intensity

• Moderate intensity

• High intensity

What is a negative energy balance?

• Consuming more calories than burned

• Burning more calories than consumed

• Equal calorie intake and expenditure

• Consuming only carbohydrates

How do simple sugars affect metabolism?

• They have no effect on metabolism.

• They are the best for weight loss.

• They decrease insulin levels.

• They spike insulin and promote lipid synthesis.

What is essential for muscle hypertrophy?

• High carbohydrate intake

• Sufficient amino acids

• Only aerobic exercise

• Skipping meals

Why is leucine important in muscle protein synthesis?

• It inhibits mTOR.

• It activates AMPK.

• It is not involved in protein synthesis.

• It strongly activates mTOR.

What role does AMPK play in muscle protein synthesis?

• It only affects carbohydrate metabolism.

• It has no effect on protein synthesis.

• It promotes protein synthesis.

• It inhibits protein synthesis.

Why are rest periods important in resistance training?

• To avoid muscle fatigue.

• To increase carbohydrate intake.

• To prevent AMPK from inhibiting mTOR.

• To decrease protein synthesis.

Which amino acids are not metabolized by the liver?

• All amino acids

• Only non-essential amino acids

• Branched-chain amino acids

• Essential amino acids