CDR CDR Sports Nutrition 1 — Questions and Answers
Question 1: What is the recommended daily protein intake range for endurance athletes according to current sports nutrition guidelines?
- 0.6–0.8 g/kg body weight
- 1.2–1.6 g/kg body weight (Correct answer)
- 2.0–2.5 g/kg body weight
- 3.0–3.5 g/kg body weight
Correct answer: 1.2–1.6 g/kg body weight
Endurance athletes typically need 1.2–1.6 g/kg body weight per day to support muscle repair and glycogen synthesis.
Question 2: Which carbohydrate intake strategy is recommended for athletes performing high-intensity exercise lasting more than 90 minutes?
- Carbohydrate restriction
- Carbohydrate loading (supercompensation) (Correct answer)
- Protein-only fueling
- Fat loading
Correct answer: Carbohydrate loading (supercompensation)
Carbohydrate loading maximizes muscle glycogen stores to delay fatigue during prolonged high-intensity exercise.
Question 3: What is the primary fuel source for high-intensity anaerobic exercise lasting 10–30 seconds?
- Free fatty acids
- Muscle glycogen via glycolysis
- Phosphocreatine (PCr) (Correct answer)
- Blood glucose
Correct answer: Phosphocreatine (PCr)
Phosphocreatine provides rapid ATP resynthesis for very short bursts of maximal-intensity activity.
Question 4: An athlete reports muscle cramps during prolonged endurance events. Which electrolyte imbalance is MOST commonly implicated?
- Calcium deficiency
- Magnesium toxicity
- Sodium deficit (hyponatremia) (Correct answer)
- Potassium excess
Correct answer: Sodium deficit (hyponatremia)
Sodium loss through sweat during prolonged exercise can lead to hyponatremia, contributing to muscle cramping.
Question 5: What is the recommended timing for consuming protein after resistance exercise to maximize muscle protein synthesis?
- Immediately before exercise only
- Within 30–60 minutes post-exercise (Correct answer)
- 6–8 hours post-exercise
- Timing does not matter
Correct answer: Within 30–60 minutes post-exercise
Consuming 20–40 g of high-quality protein within 30–60 minutes post-exercise optimizes the anabolic window for muscle repair.
Question 6: Which vitamin is most critical for bone health in female athletes at risk for the Female Athlete Triad?
- Vitamin C
- Vitamin D (Correct answer)
- Vitamin B12
- Vitamin K
Correct answer: Vitamin D
Vitamin D is essential for calcium absorption and bone mineralization, making it critical for athletes at risk of stress fractures.
CDR CDR Sports Nutrition 1
What is the recommended daily protein intake range for endurance athletes according to current sports nutrition guidelines?