NSCA CSCS Exercise Science Principles 5

Question 1

The stretch-shortening cycle (SSC) enhances force and power output primarily through:

Accepted Answer

Storage and reutilization of elastic energy in tendons and potentiation of contractile elements

Answer

The SSC enhances concentric force and power by pre-loading elastic structures (particularly tendons) and potentiating the contractile apparatus through the stretch reflex.

Question 2

Arterial blood pressure is determined by which two primary factors?

Accepted Answer

Cardiac output and total peripheral resistance

Answer

Mean arterial pressure = cardiac output × total peripheral resistance, reflecting the two primary determinants of systemic blood pressure.

Question 3

Which of the following physiological variables shows the greatest improvement with endurance training?

Accepted Answer

Lactate threshold (as a percentage of VO2max)

Answer

Endurance training dramatically shifts lactate threshold to a higher percentage of VO2max, allowing athletes to sustain higher intensities aerobically.

Question 4

The concept of 'specificity of training' (SAID principle) most directly implies that:

Accepted Answer

Physiological adaptations are specific to the type, intensity, and pattern of exercise performed

Answer

The SAID (Specific Adaptation to Imposed Demands) principle states that the body adapts specifically to the nature of the training stress applied.

Question 5

Venous return to the heart during exercise is enhanced by all of the following EXCEPT:

Accepted Answer

Increased arterial vasoconstriction in active muscles

Answer

Arterial vasoconstriction in active muscles would impede blood flow delivery, not enhance venous return; the other three mechanisms actively promote blood return to the heart.

NSCA CSCS - NSCA Certified Strength and Conditioning Specialist Practice Test

NSCA CSCS - NSCA Certified Strength and Conditioning Specialist Practice Test

NSCA CSCS Exercise Science Principles 5