2024 NSCA CSCS Exam Review All New Qs & As for A++ Exam - Pass Guaranteed!
- Which of the following substances regulates muscle actions?
potassium calcium troponin tropomyosin
Answer: calcium
- Which of the following substances acts at the NMJ to excite the muscle fibers of a motor unit?
acetylcholine ATP creatine phosphate serotonin
Answer: acetylcholine
- When throwing a baseball, an athlete's arm is rapidly stretched just before throwing the ball.
Which of the following structures detects and responds to that stretch by reflexively increasing muscle activity?
golgi tendon organ muscle spindle extrafusal muscle pacinian corpuscle
Answer: muscle spindle
- From which of the following is the heart's electrical impulse normally initiated?
AV node SA node the brain the sympathetic nervous system
Answer: SA node
- Which of the following occurs during the QRS complex of a typical ECG?
- depolarization of the atrium
- repolarization of the atrium
- repolarization of the ventricle
- depolarization of the ventricle
- 1 and 3 only
- 2 and 4 only 1 / 3
- 1, 2, and 3 only
- 2, 3, and 4 only
Answer: b. 2 and 4 only
- Which of the following is the definition of power?
mass x acceleration force x distance force x velocity torque x time
Answer: force x velocity
- To compare performances of Olympic weightlifters of different body weights, the classic
formula divides the load lifted by the athlete's body weight body weight squared lean body weight body weight to the two-thirds power
Answer: body weight to the two-thirds power
- During a free weight exercise, muscle force varies with which of the follow ing?
- perpendicular distance from the weight to the body joint
- joint angle
- movement acceleration
- movement velocity squared
- 1 and 2 only
- 1 and 4 only
- 1, 2, and 3 only
- 2, 3, and 4 only
Answer: a. 1 and 2 only (perpendicular distance from the weight to the body joint AND joint angle)
- A vertical jump involves knee, hip, and shoulder movement primarily in which of the
following anatomical planes?
sagittal perpendicular frontal transverse
Answer: sagittal
- / 3
- An athlete is performing a concentric isokinetic elbow flexion and exten- sion exercise. Which
of the following type(s) of lever occur(s) at the elbow during this exercise?
- 1st class
- 2nd class
- 3rd class
- 1 only
- 2 only
- 1 and 3 only
- 2 and 3 only
Answer: c. 1 and 3 only
- Which of the following substances can be metabolized anaerobically?
glycerol glucose amino acids free fatty acids
Answer: glucose
- Which of the following reactions is the primary cause of metabolic acidosis (decrease in
intramuscular pH during high-intensity, fatiguing exercise)?
ATP = ADP + Pi + H+ pyruvate + NADH = lactate + NAD+ ADP + creatine phosphate = ATP + creatine fructose-6-phosphate = fructose-1,6-biphosphate
Answer: ATP = ADP + Pi + H+
- Which of the following energy systems produces ATP at the quickest rate?
phosphagen aerobic glycolysis fat oxidation fast glycolysis
Answer: phosphagen
- Approximately how many net ATP are produced via the oxidative energy system from the
metabolism of one molecule?
27 34 38 41
- / 3