Gym Trainer Anatomy & Physiology

Question 1

Which muscle is the primary mover during a barbell squat?

Accepted Answer

Quadriceps

Answer

The quadriceps are the primary movers during the ascending phase of a barbell squat.

Question 2

What is the term for the ability of a muscle to exert force through its full range of motion?

Accepted Answer

Functional strength

Answer

Functional strength refers to a muscle's ability to produce force throughout its complete range of motion.

Question 3

Which energy system is primarily used during a 10-second all-out sprint?

Accepted Answer

ATP-PCr system

Answer

The ATP-PCr (phosphocreatine) system provides immediate energy for maximal efforts lasting under 10 seconds.

Question 4

The biceps brachii performs which two primary joint actions?

Accepted Answer

Elbow flexion and forearm supination

Answer

The biceps brachii flexes the elbow and supinates the forearm due to its attachment at the radius.

Question 5

Which term describes the phase of a muscle contraction where the muscle lengthens under load?

Accepted Answer

Eccentric

Answer

Eccentric contraction occurs when a muscle produces force while lengthening, such as lowering a weight.

Gym Trainer Practice Test