Proper Body Mechanics

Question 1

Importance of Body Mechanics

Answer 1

Energy Sonservation
Reduce Stress and Strain on the body
Prevent Injury
Produce safe movements of the Spine

Question 2

Percentage increase in L3 during coughing

Answer 2

5-35%

Question 3

Percentage increase in L3 during laughing

Answer 3

40-50%

Question 4

Percentage increase in L3 during walking

Answer 4

15%

Question 5

Percentage increase in L3 during side bending

Answer 5

25%

Question 6

Percentage increase in L3 during bending forward

Answer 6

150%

Question 7

Percentage increase in L3 during rotation

Answer 7

20%

Question 8

Percentage increase in L3 during lifting a 20-kg weight wtih the back straight and knees bent

Answer 8

73%

Question 9

Percentage increase in L3 during lifting a 20-kg weight with the back straight and knees straight

Answer 9

169%

Question 10

Performed by forcible exhalation against closed airway

Answer 10

Valsalva

Question 11

Physiological effects of Valsalva

Answer 11

Increases pressure and decreases cardiac output
Increases peripheral BP

Question 12

Valsalva may result in

Answer 12

Ruptured blood vessel/CVA

Question 13

What segment of the spine may be injured due to poor lifting techniques?

Answer 13

Lumbar spine

Question 14

Where the mass of you or an object is concentrated

Answer 14

Center of Gravity

Question 15

Ideal body mechanic

Answer 15

Low COG
Wide BOS

Question 16

Rather than lifting and twisting, what should be done?

Answer 16

Pivot

Question 17

Lifting techniques

Answer 17

Deeps squats
Power lift
Strait leg
One-leg (golfer’s)
Half-kneeling
Traditional
Stoop lift

Question 18

Hips below the knees
Lifters feet straddle the object

Answer 18

Deeps squat