PTHA 1409 INTRO: Exam 2 || All Questions Answered Correctly.
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Course
PTHA 1409
Institution
PTHA 1409
Body Mechanics correct answers Use of ones body to produce motion that is safe, energy conserving and anatomically and physiologically efficient.
What are the benefits of good body mechanics? correct answers Reduce stress and strain on body structures, reduce risk of injury, and conserve energy....
PTHA 1409 INTRO: Exam 2 || All Questions Answered
Correctly.
Body Mechanics correct answers Use of ones body to produce motion that is safe, energy
conserving and anatomically and physiologically efficient.
What are the benefits of good body mechanics? correct answers Reduce stress and strain on body
structures, reduce risk of injury, and conserve energy.
What age group is most likely to acquire back pain? correct answers People in their 30-40s.
What is the most common cause of back injuries? correct answers Lifelong history of poor
posture and bad body mechanics.
At what part of the spine does the most common injury happen? correct answers The lumbar
region (L4,L5) is the most common. The cervical region is the second most common.
Why is it bad when patients hold their breathe (Valsalva Phenomenon)? correct answers Air gets
trapped in the thorax, which increases the intrathoracic pressure. Venous blood flow into the
right side of the heart decreases. Cardiac output decreases and peripheral blood pressure
increases. Cerebral vessel could rupture.
What are the five L's for lifting? correct answers Load- Weight, make sure you can move it.
Lever- How close you hold it: as close as you can.
Lordosis- A little more lordotic, tilt hips a little forwards or keep neutral.
Legs- Lift with legs not with your back.
Lungs- Remember to breathe.
What are some good techniques for proper body mechanics? correct answers Position your COG
close to the objects COG. Tighten your core muscles. Avoid simultaneous trunk flexion and
rotation.
Where is an adult's COG? correct answers Slightly anterior of S2.
Vertical Line of Gravity (VLG) correct answers Imaginary line that bisects the body in the
Sagittal plane beginning at the head and continuing through the COG. Must fall between feet for
balance and stability.
What changes a persons COG? correct answers Adding ADs, standing on one foot, reaching for
an object, and adjusting BOS.
Deep squat lift correct answers Hips below knees, feet straddling the object, arms parallel to each
other, grasp opposite sides/handles/ or under bottom, and maintain vertical trunk and lumbar
spine in lordosis with anterior pelvic tilt.
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