Ergonomics Flashcards Preview

BOARDS: Functional Training, Equipment, and Technologies > Ergonomics > Flashcards

Flashcards in Ergonomics Deck (6)
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1
Q

For a patient that needs to return to a heavy intensity of work, what is their lifting # protocol?

A

occasionally lifting 100lbs
frequently lifting 50lbs
>7.5 METS

2
Q

What are the different variations of work intensity?

A
sedentary (up to 10 lbs weight lifted)
light (up to 20 lbs)
medium (up to 50 lbs)
heavy (up to 100 lbs)
very heavy (>100 lbs)
3
Q

What forces are largely believed to be responsible for vertebral end-plate fractures, disc herniations, and nerve root irritation?

A

disc compressive forces
shear force
torsional forces

4
Q

T/F: Compression forces with a subject standing are significantly lower than when the subject is sitting without support.

A

true

5
Q

If a patient is experiencing low back pain with sitting, how can you adjust their backrest to reduce lumbar disc pressure?

A

change backrest angle from 90-110d

6
Q

If the seat of a chair is too low to the ground, this can increase knee flexion angle to greater than 90 deg. How does this impact the back?

A

excessive knee flexion = results in excessive spinal flexion -> posterior tilt of back