Free MBLEx Test Kinesiology and Biomechanics Questions and Answers

Question 1

A client is performing a bicep curl. The action of lowering the weight in a controlled manner involves which type of muscle contraction in the biceps brachii?

Accepted Answer

Eccentric

Answer

An eccentric contraction occurs when a muscle lengthens under tension. In the case of lowering a weight during a bicep curl, the biceps brachii is actively engaged to control the movement, but it is elongating rather than shortening. Concentric contractions involve muscle shortening (lifting the weight), and isometric contractions involve tension without a change in muscle length.

Question 2

A client is standing and performs abduction of the hip by lifting their leg out to the side. This movement occurs primarily in which cardinal plane?

Accepted Answer

Frontal

Answer

The frontal (or coronal) plane divides the body into anterior and posterior (front and back) halves. Movements in this plane are side-to-side, such as hip abduction and adduction. The sagittal plane involves forward and backward movements (flexion/extension), and the transverse plane involves rotational movements.

Question 3

During a proprioceptive neuromuscular facilitation (PNF) stretching technique, a therapist asks the client to contract the quadriceps to encourage the hamstrings to relax. This physiological principle is known as:

Accepted Answer

Reciprocal inhibition

Answer

Reciprocal inhibition is the neuromuscular process where muscles on one side of a joint relax to accommodate the contraction of muscles on the other side of that joint. When the agonist muscle (quadriceps) contracts, the antagonist muscle (hamstrings) is neurologically signaled to relax, allowing for a deeper stretch.

Question 4

Which of the following describes a closed kinetic chain movement?

Accepted Answer

Performing a squat

Answer

In a closed kinetic chain exercise, the distal segment (hand or foot) is fixed and remains in constant contact with a surface. During a squat, the feet are fixed to the floor, and the rest of the body moves. The other options are open kinetic chain movements, where the distal segment moves freely in space.

Question 5

For upward rotation of the scapula to occur efficiently, the upper trapezius, lower trapezius, and serratus anterior must work together synergistically. This type of muscular teamwork is known as a:

Accepted Answer

Force couple

Answer

A force couple refers to two or more muscles pulling in different directions on an object to create a rotational movement. For upward rotation of the scapula, the upper trapezius pulls up, the lower trapezius pulls down, and the serratus anterior pulls forward, all contributing to the same rotational motion.

Massage and Bodywork Licensing Examination Practice Test

Massage and Bodywork Licensing Examination Practice Test

Free MBLEx Test Kinesiology and Biomechanics Questions and Answers