CNS Sports Nutrition & Exercise Physiology

Question 1

Which energy system provides the primary fuel source during a 400-meter sprint lasting approximately 45–60 seconds?

Accepted Answer

Glycolytic system

Answer

Oxidative phosphorylation

Answer

Phosphocreatine (ATP-PCr) system

Answer

Beta-oxidation

Question 2

Current evidence-based protein recommendations for strength-trained athletes seeking muscle hypertrophy suggest a daily intake of approximately:

Accepted Answer

1.6–2.2 g/kg body weight

Answer

0.8 g/kg body weight

Answer

1.2–1.4 g/kg body weight

Answer

3.0–3.5 g/kg body weight

Question 3

A competitive cyclist plans to compete in a 3-hour road race. Which carbohydrate strategy best supports endurance performance during the event?

Accepted Answer

Consume 60–90 g carbohydrate per hour from multiple transportable carbohydrate sources

Answer

Consume 20–30 g carbohydrate per hour from a single source

Answer

Rely exclusively on fat oxidation and avoid carbohydrates during exercise

Answer

Consume 120 g carbohydrate per hour to fully saturate absorption

Question 4

The American College of Sports Medicine recommends athletes drink enough fluid during exercise to prevent body weight loss exceeding:

Accepted Answer

2% of body weight

Answer

0.5% of body weight

Answer

5% of body weight

Answer

No specific threshold exists

Question 5

Which of the following female athletes is at GREATEST risk for developing iron-deficiency anemia?

Accepted Answer

An elite distance runner training 80 miles per week on hard surfaces

Answer

A recreational golfer training 3 hours per week

Answer

A competitive swimmer training 10 hours per week

Answer

A collegiate field hockey player training 6 hours per week

Question 6

Creatine monohydrate is most well-supported by evidence for enhancing performance in which type of activity?

Accepted Answer

Repeated short bouts of high-intensity exercise (e.g., sprint intervals)

Answer

Marathon running

Answer

Steady-state aerobic cycling at 60% VO2max

Answer

Flexibility and stretching protocols

Question 7

For optimal muscle glycogen resynthesis after exhaustive endurance exercise, what is the recommended carbohydrate intake during the first 4 hours of recovery?

Accepted Answer

1.0–1.2 g/kg/hr

Answer

0.5 g/kg/hr

Answer

2.5 g/kg/hr

Answer

Carbohydrate timing does not affect resynthesis rate