CSSD Supplements and Ergogenic Aids 4 — Questions and Answers
Question 1: A competitive swimmer asks about nitrate supplementation via beetroot juice. What is the proposed primary mechanism for its ergogenic effect?
- Increasing muscle glycogen storage capacity
- Reducing the oxygen cost of exercise by improving mitochondrial efficiency via nitric oxide (Correct answer)
- Directly increasing red blood cell production
- Enhancing sodium-potassium pump activity in muscle cells
Correct answer: Reducing the oxygen cost of exercise by improving mitochondrial efficiency via nitric oxide
Dietary nitrate is reduced to nitric oxide, which improves mitochondrial efficiency and reduces the oxygen cost of submaximal exercise, enhancing endurance performance.
Question 2: Which thermogenic supplement ingredient has been banned by the FDA due to cardiovascular adverse events and deaths in otherwise healthy individuals?
- Synephrine
- Ephedrine (from ephedra) (Correct answer)
- Yohimbine
- Guarana
Correct answer: Ephedrine (from ephedra)
The FDA banned ephedra-containing dietary supplements in 2004 following reports of serious cardiovascular events and deaths in healthy individuals using them for weight loss or athletic performance.
Question 3: An athlete is considering rhodiola rosea as an adaptogen. Which outcome does research most consistently support for rhodiola in athletes?
- Significant improvements in VO2max with supplementation
- Modest reductions in perceived exertion and fatigue during prolonged exercise (Correct answer)
- Substantial increases in muscle hypertrophy
- Prevention of overtraining syndrome in elite athletes
Correct answer: Modest reductions in perceived exertion and fatigue during prolonged exercise
While evidence is still emerging, rhodiola research most consistently shows modest reductions in perceived effort and fatigue during endurance exercise rather than large performance gains.
Question 4: A collegiate baseball player asks about using androstenedione ('andro') for improved muscle gains. What is the most accurate counseling point?
- Androstenedione effectively increases testosterone and builds lean muscle mass
- Androstenedione is a banned prohormone that does not reliably increase testosterone and carries significant health risks (Correct answer)
- Androstenedione is a legal and safe alternative to anabolic steroids
- Androstenedione is only banned in professional sports, not collegiate athletics
Correct answer: Androstenedione is a banned prohormone that does not reliably increase testosterone and carries significant health risks
Androstenedione is a WADA-prohibited prohormone that research shows does not reliably increase testosterone levels and is associated with adverse effects including reduced HDL cholesterol.
Question 5: What is the most evidence-based recommendation regarding protein supplement timing for maximizing muscle protein synthesis?
- Consuming protein must occur within 30 minutes post-exercise or the anabolic window is entirely missed
- Distributing protein evenly across 3–4 meals throughout the day is the most important factor, with post-exercise timing playing a supporting role (Correct answer)
- All protein should be consumed in one large meal before bedtime
- Pre-workout protein consumption is significantly more important than post-workout intake
Correct answer: Distributing protein evenly across 3–4 meals throughout the day is the most important factor, with post-exercise timing playing a supporting role
Current evidence emphasizes that total daily protein intake and even distribution across meals (every 3–4 hours) are more important than rigid post-exercise timing for maximizing muscle protein synthesis.
Question 6: A female runner asks about iron supplementation to improve her endurance performance. What is the most appropriate initial recommendation?
- Begin iron supplementation immediately since female endurance athletes always benefit from additional iron
- Assess iron status via serum ferritin, hemoglobin, and transferrin saturation before recommending supplementation (Correct answer)
- Recommend dietary iron sources only, as iron supplements never improve performance
- Recommend intravenous iron as the first-line intervention
Correct answer: Assess iron status via serum ferritin, hemoglobin, and transferrin saturation before recommending supplementation
Iron status must be assessed through appropriate biomarkers before supplementation, as excessive iron can be harmful and supplementation is only beneficial when deficiency or insufficiency is confirmed.
Question 7: Colostrum is marketed to athletes for immune and recovery benefits. What active components are primarily responsible for these proposed effects?
- High carbohydrate content and rapid glycemic index
- Immunoglobulins, growth factors (IGF-1, TGF-β), and lactoferrin (Correct answer)
- Branched-chain amino acids and tryptophan
- Probiotics and digestive enzymes
Correct answer: Immunoglobulins, growth factors (IGF-1, TGF-β), and lactoferrin
Bovine colostrum's proposed benefits are attributed to its immunoglobulins, growth factors like IGF-1 and TGF-β, and antimicrobial proteins like lactoferrin.
CSSD Supplements and Ergogenic Aids 4
A competitive swimmer asks about nitrate supplementation via beetroot juice.
What is the proposed primary mechanism for its ergogenic effect?