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Ergonomics OER > Risk Factors, Sources, Guidelines, Recommendations > Flashcards

Risk Factors, Sources, Guidelines, Recommendations Flashcards

1
Q

Risk Factor: Shoulder Abduction

A

Definition: Shoulders rotated away from the midline, arms reaching out from body

Guideline: Shoulders should be in a neutral position when using work tools and arm rests.

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2
Q

Risk Factor: Neck Flexion

A

Definition: Neck FLEXING forward (no wrinkles in back)

Guideline: Adjust posture, seat, monitors, and work tools to ensure neutral neck position while working.

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3
Q

Risk Factor: Neck Rotation

A

Definition: Neck is turned so head faces in a direction misaligned with shoulders, hips and midline

Guideline: Main monitor should be at arm’s length, with center of screen slightly below line of sight. If using 2 screens equally, the “seam” between screens should be centered.

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4
Q

What is the risk factor displayed in this image?

A

Neck Rotation

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5
Q

What is the risk factor displayed in this image?

A

Neck Flexion

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6
Q

What is the risk factor displayed in this image?

A

Neck Extension

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7
Q

What is the risk factor displayed in this image?

A

Trunk rotation

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8
Q

What is the risk factor displayed in this image?

A

Trunk Flexion

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9
Q

What is the risk factor displayed in this image?

A

Shoulder Adduction

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10
Q

What is the risk factor displayed in this image?

A

Shoulder Abduction

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11
Q

What is the risk factor displayed in this image?

A

Elbow Extension

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12
Q

What is the risk factor displayed in this image?

A

Shoulder Shrugging

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13
Q

What is the risk factor displayed in this image?

A

Forearm Supination

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14
Q

What is the risk factor displayed in this image?

A

Radial Deviation

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15
Q

What is the risk factor displayed in this image?

A

Wrist Flexion

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16
Q

What is the risk factor displayed in this image?

A

Forearm Pronation

17
Q

What is the risk factor displayed in this image?

A

Ulnar Deviation

18
Q

What is the risk factor displayed in this image?

A

Wrist Extension

19
Q

How many hours does the average worker sit per week?

A

64, according to Sullivan and Horwitz-Bennett

20
Q

What percentage of employees work in an open-plan office?

A

70%, according to fox business

21
Q

At what rate does LPL enzyme production decrease after 1 hour of continuous citting?

A

90%, according to Ergonomics In Design

22
Q

Overall, how are desk and workspace allocation trending per employee?

A

Decreases in desk size and in work space.

23
Q

What are some common indicators of physical discomfort at a workstation?

A
  • Lumbar Support
  • Wrist rests
  • Monitor Risers
  • Antifatigue mats
24
Q

Why are after-market lumbar supports generally not recommended with a task chair?

A

Lumbar supports reduce seat pan depth and reduces the effectiveness of a task chair’s backrest

25
Q

Why are mouse wrist rests typically ineffective to help those with intra-carpal tunnel pressure?

A

Due to how folks use the wrist, it typically doubles the pressure on the intra-carpal muscles.

26
Q

How can a poorly positioned monitor riser cause discomfort?

A

It promotes neck extension for most users.

27
Q

Why are antifatigue mats potentially promblematic?

A

They mask fatigue in joints and muscles, and can negatively effect someone’s sit/stand utilization.

28
Q

Define Ergonomics.

A

Ergonomics is the science of fitting the task to the worker to maximize productivity while reducing discomfort, fatigue, and injury.

29
Q

Name 6 INJURY risk factors.

A

1) Posture
2) Duration
3) Repetition
4) Force
5) Ambient Environment
6) Psychosocial

30
Q

What is the ideal resting neck angle when sitting or standing?

A

0*

31
Q

How many pounds of gravitational force is associated with flexion at 15*?

A

27 lbs

32
Q

How many pounds of gravitational force is associated with flexion at 30*

A

40 lbs

33
Q

How many pounds of gravitational force is associated with flexion at 45*

A

49 lbs

34
Q

How many pounds of gravitational force is associated with flexion at 60*?

A

60 lbs

35
Q

What are four common sources of Contact Stress?

A

1) Desk edge
2) Chair armrests
3) Unsupported feet
4) Seat edge

36
Q

What type of slope is recommended for keyboards?

A

Negative slope.

37
Q

Why are keyboard tabbies bad?

A

They create a positive incline and increase pressure to wrists and strain on joints.

38
Q

What is the first solution to an ergonomic problem?

A

Education and training!

39
Q

Why is behavioral adjustment key?

A

Without proper understanding of why something doesn’t work, backed up by evidence, folks are extremely unlikely to make a change.

Ergonomics OER (1 decks)

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