21_22- Egro/Workstation

Question 1

Which of the following aspects of chiropractic care focuses on 'up stream' preventionof MSK issues?
A. Spinal manipulation
B. Soft tissue therapy
C. Anti-inflammatory treatments
D. Ergonomics

Answer 1

D

Question 2

What analysis could be related to a worker's complaint of shoulder/upper trapezius tension? (Choose all that apply)
A. Shoulder flexion angle
B. Viewing distance
C. Font size
D. Screen height

Answer 2

All of above

Question 3

What is the ideal monitor position to avoid glare relative to a window? What kind of glare does this avoid?

Answer 3

Perpendicular to window

Direct & Indirect

Question 4

What is masking glare?

Answer 4

Glare on a screen from overhead light which partially obscures what a worker is trying to see

Question 5

What is the most efficient workspace distance (for reach)? What about a normal work distance?

Answer 5

Most efficient: 10 inches

Normal: 8 inches

Question 6

True or false: it is important to focus on the exact positioning of equipment in an ergonomic assessment because this will change behaviour

Answer 6

False - will not automatically change behaviour, doesn’t address habits of slouching and sitting duration

Question 7

What is the ideal back restangle?
A. 70-80 degrees
B. 90 degrees
C. 93-113 degrees
D. 120 degrees

Answer 7

C

Question 8

What is the most important recommendation wrt workstation layout?

Answer 8

Encourage frequent changes in posture to avoid fatigue

Question 9

What is the best feature of an ergonomic chair?

Answer 9

Ability to change position frequently

Question 10

What is a potential issue with akeyboard and mouse position that is too high?
A. External shoulder impingement
B. Continuous muscle effort and fatigue at shoulder and arms
C. Decreased productivity
D. Tennis elbow

Answer 10

B

Question 11

What problems might a worker encounter if the keyboard position is too low?

Answer 11

Tendency to lean forward, stressing back and arms

Wrists also tend to extend, stressing muscles and tissues

Question 12

What condition is commonly caused by overuse of a mouse? How can the risk of this be reduced?

Answer 12

Tennis elbow

• Make sure forearm and elbow are supported
• Make sure mouse button activation force is not too high or low, mouse is light, and bottom of mouse is clean
• Switch hands and switch mouse types (e.g. stylus instead) to decrease overuse

Question 13

What are 4 common symptoms of visual discomfort?

Answer 13

Eyyestrain
Burning
Blurred vision
Headaches

Question 14

True or false: objects on the screen should ideally be at the same height as eye level to reduce eye strain

Answer 14

False - most relaxed line of sight is 10-15deg below horizontal

Question 15

The maximum sagittal rotation of the eyes is ____ degrees below and ____ degrees above horizontal

Answer 15

70;50

Question 16

What 2 factors should be taken into account when determining the distance a screen should be away from the worker?

Answer 16

Size of monitor

Font size

Question 17

What is a challenge that individuals who wear bifocals experience when trying to use a computer? What are 2 solutions?

Answer 17

Tend to tilt head back to use magnification to read, causing neck discomfort

Modifications:

• Low screen
• Single focus lenses (computer glasses)

Question 18

Seat height can change which of the following factors:
A. Eye level
B. Elbow/hand level
C. Shoulder angle
D. Foot level (foot rest)

Answer 18

All of the above

Question 19

Adjustable height desks are generally preferred, but fixed height desks are suitable if which 3 factors are adjustable?

Answer 19

Chair
Foot stool
Monitor

Question 20

Why do most desks have noback panel near the bottom?
A. Access to electrical outlets
B. To increase horizontal knee space
C. To increase horizontal toe space
D. Aesthetic design

Answer 20

C

Question 21

True or false: Spacers/cradles are recommended to reduce the amount of effort needed to hold a phone to the ear.

Answer 21

False - static effort still required - instead use speaker phone, headset, or bluetooth

Question 22

What is the ideal lighting level (in lux) for overhead lighting? In which 2 conditions would you require more light than this?

Answer 22

300-500 lux
More light needed for:
- paper-based work
- older/visually impaired individuals

Question 23

True or false: on an overcast day, there is not enough sunlight from a window so additional lighting is required when using a computer

Answer 23

False - 1000 lux on overcast day (so more than required 300-500 lux)

Question 24

Why are anti-glare screens recommended only after other methods are proven unsuccessful?

Answer 24

Tend to attract dust and create more reflections

Question 25

What is a creative solution for if someone is staying in a hotel room with no desk and needs to work on a computer?

Answer 25

Use an ironing board like a standing desk

Question 26

How can you reduce the chiropractor’s reaction moment in the lumbopelvic region when performing soft tissue therapy on a patient’s neck?

A. Core exercises
B. Treat more slowly
C. Use a stool
D. Wear high friction shoes

Answer 26

C

Question 27

risk factors for developing cumulative trauma disorders

Answer 27

1. cyclic loading at high frequency
2. long duration work
3. short periods of rest
4. High # of reps
5. Static or cyclic work w heavy loads

Question 28

how long of work elicited neuromuscular disorder

Answer 28

excess of 30 mins

Question 29

mod exercise with sufficient rest results in what for ligs

Answer 29

• increase in the strength, size or lig

- increase number of collagen fibrils and fibril diameter

Question 30

immobilization leads to (3)

Answer 30

decreased:

1. Collagen fibre diameter
2. Fibril density and fibril number
3. Collagen mass and metabolism

Question 31

best static load:rest

Answer 31

1:1 up to 30:30mins