NCBTMB Kinesiology and Biomechanics 2

Question 1

Which muscle acts as the primary synergist to the gluteus maximus during hip extension?

Accepted Answer

Biceps femoris

Answer

The biceps femoris (long head) assists the gluteus maximus as a synergist in hip extension.

Question 2

When the scapula moves away from the spine, this motion is called:

Accepted Answer

Protraction

Answer

Protraction (abduction) of the scapula is movement away from the vertebral column, performed primarily by the serratus anterior.

Question 3

A client has weak hip abductors. Which gait deviation would you expect?

Accepted Answer

Trendelenburg gait

Answer

Trendelenburg gait occurs when weak hip abductors (primarily gluteus medius) fail to stabilize the pelvis during single-leg stance, causing the contralateral hip to drop.

Question 4

The term 'closed kinetic chain' refers to movement where:

Accepted Answer

The distal segment is fixed and the proximal segment moves

Answer

In a closed kinetic chain, the distal segment (such as the foot) is fixed to a surface, causing the proximal segments to move.

Question 5

Which type of muscle contraction produces the greatest force?

Accepted Answer

Eccentric

Answer

Eccentric contractions, where the muscle lengthens under load, produce greater force than both concentric and isometric contractions.

NCBTMB Exam Practice Test

NCBTMB Exam Practice Test

NCBTMB Kinesiology and Biomechanics 2