2015.12.21 CSCS Daily Study Question:
An athlete is performing the 300-yard shuttle run, which takes them approximately 60 seconds. Regarding the athlete’s primary energy system during this activity, which of the following statements are true?
(A) NAD+ is reduced
(B) NADH is oxidized
(C) Pyruvate is oxidized
(D) Pyruvate is converted to Acetyl CoA
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Correct Answer:
(B) NADH is oxidized
Explanation:
The 300-yard shuttle is a high intensity activity that lasts about 60 seconds for this athlete. High intensity activities lasting 30 seconds to 2 minutes primarily use fast glycolysis (lactic acid fermentation) as their energy source.
During fast glycolysis, pyruvate is converted to lactate by being reduced (given an electron) by NADH. The NADH molecule is oxidized (gives up an electron / H+) and becomes NAD+ in the process. The regenerated NAD+ can be used again in the first part of glycolysis (oxidizing glyceraldehyde-3-phosphate).
Reference:
Essentials of Strength Training & Conditioning 3rd edition p. 25 – 32
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The Certified Strength and Conditioning Specialist (CSCS) exam by the National Strength and Conditioning Association (NSCA) is a four-hour-long, pencil and paper or computer-based examination. The Certified Strength and Conditioning Specialist exam has two sections: “Scientific Foundations” and “Practical / Applied.” Each of these sections consist of questions that the National Strength and Conditioning Association (NSCA) feels are relevant to test the knowledge and experience of a candidate for the Certified Strength and Conditioning Specialist (CSCS) professional credential. Certified strength conditioning specialist comprehensive questions from the Scientific Foundations section include anatomy, exercise physiology, biomechanics, and nutrition. certified strength conditioning specialist comprehensive questions from the Practical / Applied section include program design, exercise techniques, testing and evaluation, and organization / administration (NSCA, 2015).
2015.12.21 CSCS Daily Study Question