Massage Therapist FREE Massage Therapist Kinesiology and Biomechanics Questions and Answers 2 — Questions and Answers
Question 1: Which type of muscle contraction occurs when a muscle generates force while lengthening, such as slowly lowering a weight?
- Eccentric contraction (Correct answer)
- Concentric contraction
- Isometric contraction
- Isokinetic contraction
Correct answer: Eccentric contraction
An eccentric contraction occurs when a muscle lengthens under tension, controlling the speed of movement against an external force.
Question 2: What is the primary role of the rotator cuff muscles during shoulder abduction?
- Stabilizing the humeral head in the glenoid fossa (Correct answer)
- Producing the main force of abduction
- Retracting the scapula
- Elevating the clavicle
Correct answer: Stabilizing the humeral head in the glenoid fossa
The rotator cuff muscles act as dynamic stabilizers, keeping the humeral head centered in the shallow glenoid fossa during shoulder movements.
Question 3: In biomechanics, what does a first-class lever system have in common with a seesaw?
- The fulcrum is located between the effort and the resistance (Correct answer)
- The effort is located between the fulcrum and the resistance
- The resistance is located between the fulcrum and the effort
- The effort and resistance are on the same side of the fulcrum
Correct answer: The fulcrum is located between the effort and the resistance
A first-class lever has the fulcrum positioned between the effort force and the resistance force, just like a seesaw.
Question 4: Which plane of motion divides the body into front and back halves and includes movements such as lateral flexion?
- Frontal (coronal) plane (Correct answer)
- Sagittal plane
- Transverse plane
- Oblique plane
Correct answer: Frontal (coronal) plane
The frontal plane divides the body into anterior and posterior sections, and movements like lateral flexion and abduction occur within this plane.
Question 5: What term describes the point at which a muscle attaches to the more movable bone?
- Insertion (Correct answer)
- Origin
- Belly
- Tendon
Correct answer: Insertion
The insertion is the muscle attachment site on the bone that typically moves during contraction, as opposed to the origin on the more stationary bone.
Question 6: During gait, what phase occurs when both feet are in contact with the ground simultaneously?
- Double support phase (Correct answer)
- Swing phase
- Single limb stance
- Terminal swing
Correct answer: Double support phase
The double support phase is the brief period during walking when both feet are on the ground, providing maximum stability.
Massage Therapist FREE Massage Therapist Kinesiology and Biomechanics Questions and Answers 2
Which type of muscle contraction occurs when a muscle generates force while lengthening, such as slowly lowering a weight?