NSCA-CPT Biomechanics 2

Question 1

Which plane of motion does a lateral raise exercise primarily occur in?

Accepted Answer

Frontal plane

Answer

Lateral raises involve shoulder abduction, which occurs in the frontal (coronal) plane.

Question 2

What term describes the rotational effect a force has around an axis?

Accepted Answer

Torque

Answer

Torque (moment of force) is the rotational equivalent of linear force and equals force multiplied by the perpendicular moment arm.

Question 3

During a barbell squat, which joint action occurs at the ankle during the descent phase?

Accepted Answer

Dorsiflexion

Answer

The ankle dorsiflexes (toes move toward shin) as the tibia moves forward over the foot during squat descent.

Question 4

The mechanical advantage of a lever system is BEST defined as:

Accepted Answer

The ratio of effort arm to resistance arm

Answer

Mechanical advantage equals effort arm divided by resistance arm; a value greater than 1 means less force is needed to move the load.

Question 5

Which type of muscle contraction produces the greatest force output?

Accepted Answer

Eccentric

Answer

Eccentric contractions generate the highest force because cross-bridges remain attached longer and passive elastic structures (titin) contribute additional tension.

NSCA-CPT Exam Practice Test

NSCA-CPT Exam Practice Test

NSCA-CPT Biomechanics 2