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NSCA CSCSFree Certified Strength & Conditioning Specialist practice test
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10 real NSCA CSCS practice questions with instant answers and explanations — no account, no credit card, no email. Score yourself, then unlock the full bank of 1,500 questions whenever you’re ready. The NSCA CSCS passing score is 70 / 100 scaled (each section scored independently; both must pass).
Which energy system predominates during a maximal effort lasting less than 10 seconds, such as a single heavy back squat repetition?
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Q1. Which energy system predominates during a maximal effort lasting less than 10 seconds, such as a single heavy back squat repetition?
Correct answer: A. Phosphagen (ATP-PC) system
The ATP-PC system supplies energy rapidly without oxygen for very short, maximal efforts lasting up to about 10 seconds, using stored ATP and phosphocreatine.
Q2. Compared with Type I fibers, Type IIx (fast glycolytic) muscle fibers are characterized by which of the following?
Correct answer: B. Higher force production and faster fatigue rate
Type IIx fibers have high myosin ATPase activity and large motor neuron innervation, producing high force and velocity but fatiguing quickly due to low mitochondrial and capillary density.
Q3. According to the size principle of motor unit recruitment, as force demands increase during a maximal lift, motor units are recruited in which order?
Correct answer: C. Smallest, lowest-threshold units first, progressing to larger units
The size principle states that motor units are recruited in order of increasing size, with smaller, low-threshold units activated first and larger, high-threshold units added as force demand rises.
Q4. A training program using heavy resistance loads (greater than 85% 1RM), moderate volume, and short rest intervals is most associated with which acute endocrine response?
Correct answer: D. Elevated growth hormone and testosterone concentrations
High-intensity resistance training with short rest periods and moderate-to-high volume produces the greatest acute elevations in testosterone and growth hormone, driven largely by metabolic stress.
Q5. In a biomechanical analysis of the squat, increasing forward trunk lean shifts the moment arm and resistive torque predominantly onto which joint?
Correct answer: A. Hip
Greater forward trunk lean increases the horizontal distance between the bar and the hip joint, lengthening the hip moment arm and increasing hip extensor torque demand relative to the knee.
Q6. Chronic heavy resistance training primarily drives long-term strength gains beyond the first few weeks mainly through which adaptation?
Correct answer: B. Myofibrillar protein accretion and neural efficiency
After initial neural adaptations, sustained strength gains are driven largely by increases in contractile (myofibrillar) protein content and improved neural drive, distinct from sarcoplasmic hypertrophy which contributes more to fiber size than force per cross-sectional area.
Q7. During high-intensity glycolytic exercise lasting 30-60 seconds, accumulation of which byproduct is most associated with the acute decline in performance?
Correct answer: C. Hydrogen ions from lactate/pyruvate metabolism
Rapid glycolysis produces pyruvate and hydrogen ions; the accumulation of hydrogen ions lowers muscle pH, impairing enzyme function and cross-bridge cycling and contributing to fatigue.
Q8. According to the sliding filament theory, muscle shortening occurs primarily because of which event?
Correct answer: D. Actin filaments are pulled over stationary myosin cross-bridges
In the sliding filament theory, actin filaments slide past myosin filaments as cross-bridges cycle, pulling the Z-lines closer together without the filaments themselves changing length.
Q9. Long-term aerobic endurance training increases maximal oxygen uptake primarily through which central cardiovascular adaptation?
Correct answer: A. Increased left ventricular chamber size and stroke volume
Chronic aerobic training increases left ventricular end-diastolic volume, enhancing stroke volume so that more blood and oxygen is delivered per heartbeat, raising VO2max.
Q10. The principle of progressive overload states that continued strength adaptation requires which of the following?
Correct answer: B. Systematically increasing training demands over time as the body adapts
Progressive overload requires gradually increasing volume, intensity, or another training variable so the neuromuscular system continues to be challenged beyond its current capacity.
Exam facts and objectives sourced from the official NSCA certification page. Last reviewed June 2026.
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