CPSS Nutrition and Supplementation for Sport Performance 2

Question 1

Beta-alanine supplementation improves performance primarily by increasing muscle concentrations of which compound?

Accepted Answer

Carnosine

Answer

Beta-alanine is a rate-limiting precursor to carnosine, which buffers intramuscular hydrogen ions during high-intensity exercise.

Question 2

Which dietary strategy is most effective for maximizing muscle glycogen stores before a competition?

Accepted Answer

Carbohydrate loading with 8–12 g/kg/day for 1–3 days

Answer

Carbohydrate loading at 8–12 g/kg/day for 1–3 days before competition supersaturates muscle glycogen stores, delaying fatigue in endurance events.

Question 3

Hyponatremia in endurance athletes is most commonly caused by:

Accepted Answer

Overdrinking hypotonic fluids, diluting serum sodium

Answer

Overdrinking plain water or low-sodium fluids during prolonged events dilutes serum sodium below normal levels, causing exercise-associated hyponatremia.

Question 4

What is the primary mechanism by which caffeine enhances endurance performance?

Accepted Answer

Antagonizing adenosine receptors to reduce perceived exertion and fatigue

Answer

Caffeine blocks adenosine receptors in the central nervous system, reducing perceived fatigue and exertion, thereby improving endurance capacity.

Question 5

Which statement best describes periodized nutrition in the context of sport science?

Accepted Answer

Nutritional intake is deliberately varied to align with the training phase, load, and competition schedule

Answer

Periodized nutrition strategically adjusts energy and macronutrient intake to match training phase demands, optimizing both adaptation and performance.

CPSS - Certified Performance and Sport Scientist Practice Test

CPSS - Certified Performance and Sport Scientist Practice Test

CPSS Nutrition and Supplementation for Sport Performance 2