OMT Kinesiology & Biomechanics 2

Question 1

Which of the following best defines 'torque' in biomechanics?

Accepted Answer

The tendency of a force to cause rotation around an axis

Answer

Torque is the rotational effect produced by a force applied at a distance from an axis, calculated as force multiplied by the perpendicular moment arm.

Question 2

During normal gait, which phase accounts for approximately 60% of the gait cycle?

Accepted Answer

Stance phase

Answer

The stance phase, during which the foot is in contact with the ground, comprises approximately 60% of the total gait cycle.

Question 3

The center of gravity in an average standing adult is located approximately at which level?

Accepted Answer

Anterior to S2 vertebra

Answer

The center of gravity in a standing adult is located approximately anterior to the second sacral (S2) vertebra, roughly at 55–57% of standing height.

Question 4

Which muscle is considered the primary stabilizer of the scapula during upper extremity elevation?

Accepted Answer

Serratus anterior

Answer

The serratus anterior is the primary stabilizer of the scapula, protracting it and holding the medial border against the thorax during arm elevation.

Question 5

The scapulohumeral rhythm refers to the ratio of glenohumeral to scapulothoracic motion during arm elevation. What is the commonly accepted ratio?

Accepted Answer

2:1

Answer

The scapulohumeral rhythm has an approximate 2:1 ratio, meaning for every 2 degrees of glenohumeral motion, there is 1 degree of scapulothoracic motion.

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OMT - Orthopedic Massage Certification Practice Test

OMT Kinesiology & Biomechanics 2