NASM-CPT Exercise Science Fundamentals 4

Question 1

During a box jump, which phase of the stretch-shortening cycle is the brief transition between landing (eccentric loading) and takeoff (concentric force)?

Accepted Answer

Amortization phase

Answer

The amortization phase is the dynamic stabilization period between the eccentric and concentric phases, and shorter amortization produces more power.

Question 2

A client training for a marathon will rely most on which muscle fiber type, characterized by high mitochondrial and capillary density?

Accepted Answer

Type I

Answer

Type I (slow-twitch) fibers are small, fatigue-resistant, and rich in mitochondria and capillaries, making them ideal for endurance.

Question 3

According to Henneman's size principle, how are motor units recruited as force demands increase?

Accepted Answer

Smallest to largest

Answer

The size principle states that smaller, low-threshold motor units are recruited first, followed by larger, high-threshold units as force needs rise.

Question 4

Which principle explains why bone density increases in response to the mechanical loads placed on it during resistance training?

Accepted Answer

Wolff's law

Answer

Wolff's law states that bone adapts and remodels according to the loads placed upon it.

Question 5

The elbow joint during a biceps curl is an example of which class of lever, the most common type in the human body?

Accepted Answer

Third-class lever

Answer

In a third-class lever the effort (biceps insertion) lies between the fulcrum (elbow) and the resistance (weight in the hand).

NASM Practice Test

NASM Practice Test

NASM-CPT Exercise Science Fundamentals 4