When heart muscle fibers stretch less…
A:) Ejection fraction decreases
B:) Ejection fraction increases

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Correct Answer:
A:) Ejection fraction decreases

Explanation:
During exercise, venous return increases. Venous return is the amount of blood returning to the heart from systemic circulation. More blood returning to the heart causes the muscle fibers of the heart (myocardial fibers) to stretch more, increasing their force of contraction. Exercise also increases the actions of catecholamines such as epinephrine and norepinephrine which cause more forceful ventricular contractions. As a result of increased force of ventricular contraction, the heart ejects a greater amount of blood, thus increasing the ejection fraction.

These CSCS exam practice questions were created to help users study for the Certified Strength and Conditioning Specialist certification exam from the National Strength and Conditioning Association (NSCA). Using CSCS exam practice questions is an efficient way to study the most relevant material for the Certified Strength and Conditioning Specialist exam. CSCS exam practice questions and our CSCS study guide can help you to remember important concepts and test your knowledge of the material in a no-pressure environment. The Certified Strength and Conditioning Specialist designates that a fitness professional has the scientific and practical knowledge necessary to assist athletes to improve their physical performance.

If you’re like most strength and conditioning specialists, chances are that you like sports and you have a competitive mindset. For people who are competitive, doing practice questions is awesome because 1) they like to win, and 2) the sting of getting a question wrong burns the correct answer into the mind of a competitive person unlike any other learning method.

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).

Links:
National Strength & Conditioning Association