21_22- Egro/Workstation Flashcards
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
D
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
All of above
What is the ideal monitor position to avoid glare relative to a window? What kind of glare does this avoid?
Perpendicular to window
Direct & Indirect
What is masking glare?
Glare on a screen from overhead light which partially obscures what a worker is trying to see
What is the most efficient workspace distance (for reach)? What about a normal work distance?
Most efficient: 10 inches
Normal: 8 inches
True or false: it is important to focus on the exact positioning of equipment in an ergonomic assessment because this will change behaviour
False - will not automatically change behaviour, doesn’t address habits of slouching and sitting duration
What is the ideal back restangle? A. 70-80 degrees B. 90 degrees C. 93-113 degrees D. 120 degrees
C
What is the most important recommendation wrt workstation layout?
Encourage frequent changes in posture to avoid fatigue
What is the best feature of an ergonomic chair?
Ability to change position frequently
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
B
What problems might a worker encounter if the keyboard position is too low?
Tendency to lean forward, stressing back and arms
Wrists also tend to extend, stressing muscles and tissues
What condition is commonly caused by overuse of a mouse? How can the risk of this be reduced?
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
What are 4 common symptoms of visual discomfort?
Eyyestrain
Burning
Blurred vision
Headaches
True or false: objects on the screen should ideally be at the same height as eye level to reduce eye strain
False - most relaxed line of sight is 10-15deg below horizontal
The maximum sagittal rotation of the eyes is ____ degrees below and ____ degrees above horizontal
70;50
What 2 factors should be taken into account when determining the distance a screen should be away from the worker?
Size of monitor
Font size
What is a challenge that individuals who wear bifocals experience when trying to use a computer? What are 2 solutions?
Tend to tilt head back to use magnification to read, causing neck discomfort
Modifications:
- Low screen
- Single focus lenses (computer glasses)
Seat height can change which of the following factors: A. Eye level B. Elbow/hand level C. Shoulder angle D. Foot level (foot rest)
All of the above
Adjustable height desks are generally preferred, but fixed height desks are suitable if which 3 factors are adjustable?
Chair
Foot stool
Monitor
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
C
True or false: Spacers/cradles are recommended to reduce the amount of effort needed to hold a phone to the ear.
False - static effort still required - instead use speaker phone, headset, or bluetooth
What is the ideal lighting level (in lux) for overhead lighting? In which 2 conditions would you require more light than this?
300-500 lux
More light needed for:
- paper-based work
- older/visually impaired individuals
True or false: on an overcast day, there is not enough sunlight from a window so additional lighting is required when using a computer
False - 1000 lux on overcast day (so more than required 300-500 lux)
Why are anti-glare screens recommended only after other methods are proven unsuccessful?
Tend to attract dust and create more reflections
What is a creative solution for if someone is staying in a hotel room with no desk and needs to work on a computer?
Use an ironing board like a standing desk
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
C
risk factors for developing cumulative trauma disorders
- cyclic loading at high frequency
- long duration work
- short periods of rest
- High # of reps
- Static or cyclic work w heavy loads
how long of work elicited neuromuscular disorder
excess of 30 mins
mod exercise with sufficient rest results in what for ligs
- increase in the strength, size or lig
- increase number of collagen fibrils and fibril diameter
immobilization leads to (3)
decreased:
- Collagen fibre diameter
- Fibril density and fibril number
- Collagen mass and metabolism
best static load:rest
1:1 up to 30:30mins
