CDR Sports Nutrition Flashcards

Caffeine is classified as an ergogenic aid. What is its primary mechanism for enhancing endurance performance?

Answer: Blocks adenosine receptors, reducing perception of fatigue

Caffeine competes with adenosine at its receptors in the brain, reducing the sensation of fatigue and effort during exercise.

An athlete following a vegan diet is MOST at risk for deficiency in which nutrient critical for red blood cell formation?

Answer: Vitamin B12

Vitamin B12 is found almost exclusively in animal products, making vegan athletes highly susceptible to deficiency and subsequent megaloblastic anemia.

Which type of dietary fat is most beneficial for reducing exercise-induced inflammation in athletes?

Answer: Omega-3 polyunsaturated fatty acids

Omega-3 fatty acids (EPA and DHA) have anti-inflammatory properties that may help reduce muscle soreness and support recovery.

A sports dietitian is counseling a high school cross-country runner who restricts food to improve performance. Which screening tool is MOST appropriate to assess disordered eating risk?

Answer: LEAF-Q (Low Energy Availability in Females Questionnaire)

The LEAF-Q was specifically designed and validated to identify low energy availability and disordered eating risk in female athletes.

During a marathon, a runner consumes a 6% carbohydrate sports drink. What is the primary benefit of this concentration compared to plain water?

Answer: Maintains blood glucose and delays glycogen depletion

A 6% carbohydrate solution provides exogenous glucose to working muscles, helping to spare muscle glycogen and delay fatigue.

Which amino acid is conditionally essential during periods of intense athletic training due to increased demand for intestinal repair and immune function?

Answer: Glutamine

Glutamine becomes conditionally essential under the physiological stress of intense training, supporting gut integrity and lymphocyte proliferation.