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Office ergonomics

Setting up your office workstation

Proper ergonomics is important to prevent musculoskeletal pain.

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What can I do?

  • Get familiar with adjustment of the chair, table and electronic devices. Please contact your line manager if you discover faulty equipment. Start by adjusting the chair before adjusting the table and electronic devices. 

The chair

Follow this order when applying the chair settings.

Seat height:

  • Sit down on the seat with feet placed flat on the floor.
  • The seat height should be so that you have 90°-110° flexion in the knee joint.

Seat debth:

Pull the correct lever and push the seat so that:

  • The lower part of your back is in contact with the back support. 
  • There's should be a small gap between your knees and the seat, apporixmately 5-10 cm. Add a cushion behind your back in case of not achieving this.

Back support:

Adjust the height so that:

  • The back support is helping you to sit with a good posture/ neutral spine. Add a cushion if needed.

Tilt:

The tilt is used to variate position and to relax. It is also used to incline the seat slightly forward. It’s generally recommended that you keep the tilt locked in «regular» (upright) back position whilst working. 

  • The tilt is usually controlled by two features: The lever for locked/ open, and the handle for tilt resistance.
  • The tilt is locked by a lever. When the lever is unlocked, the back support leans backwards. On some chairs, the seat can tilt  forwards as well.
  • Turn the handle regulating resistance (often found under the seat). Turn the handle right or left to increase or decrease the tilt resistance.
  • Test tilt resistance: Lean back and move arms in a semi-circle forwards and upwards. The chair should follow your movements by softly leaning you back. Lower your arms the oppisite way and try to sit upright again. The resistance is correct if the chair follows your movement back up again.
  • For chairs that allow forward tilting of the seat: Make sure the seat is tilted somewhat forward while in locked position. This allows for better circulation to the legs. 

Armrests:

Can be used to provide support for the forearms. Alternatively, you can use the tabletop as support. In case of the latter, place the armrests low enough so that you can sit close to the table.

  • Height: So that you have 90° flexion in the elbow joint. Upper arms should be held close to the torso. 
  • Width: As close to the body as possible. Note: Not all chairs allows this adjustment. 

Table

  • Sit close to the table. 
  • Height:
    • Approximately 2/3 of the forearms should be supported on the table and/or armrests.
    • The elbow should be in about 90° flexion. If the table is too high the shoulders will elevate (while seated in the chair close to the table).
    • Manual adjustment of table height is done by turning the adjustment piece placed distally on the table legs.
    • If the table is too high for the feet to rest on the floor - add a foot rest. 
  • Debth:
    • Should be 80-90 cm, due to the recommended viewing distance to the monitor, room for the keyboard and forearm support.

Monitor

Distance:

  • The monitor should be between 50-80 cm, depending on your vision and monitor size. 
  • Rule of thumb: Approximately an arm length away.

Height:

  • The centre of the screen should be 15°-30° down compared to looking straight ahead.
  • Rule of thumb 1: Upper monitor edge at eyebrow or eye level. 
  • Rule of thumb 2: Gaze rests primarily at the upper 1/3 of the screen.

Angle:

  • Tilt the monitor slightly backwards (so that it's not perpendicular to the table top).
     

More than one monitor:

If you have several monitors, they should be placed right next to each other.

  • The main screen is right in front of you, the secondary screen is right next to it (no gap between).
  • In case of two (or multiple) screens being used, the midline of the screens should be right in front of you (or symmetrically placed from the screen in the middle).
  • Consider tilting one of the monitors in the vertical position. This reduces the amount of scrolling while working, which again prevents mouse arm syndrome. However, be mindful that this positioning can lead to extra strain on the eyes or neck. 

Mouse and keyboard

  • Place the mouse right next to the keyboard and rest your forearm on the table. That way your shoulder muscles relaxes the most.
mus
Photo:
Kjersti Nygård
mus
Photo:
Kjersti Nygård
  • Place the keyboard flat on the table (avoid using the tilt). An angled wrist leads to constant muscle activation in your forearm, thus increasing the risk of mouse arm syndrome.

mus
Photo:
Kjersti Nygård

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Photo:
Kjersti Nygård

Shortcuts

Learn the most common shortcuts.

Shortcuts on the keyboard
Photo:
Kjersti Nygård
mus
Photo:
Kjersti Nygård

 

Lighting

  • Reduce glaring and blinding sunlight by placing the workstation 90° to the window.
  • Ensure sufficient general lighting.
  • Add a desk lamp if needed. Be mindful that the need of lighting increases with age.
  • Avoid high contrasts between dark and light surfaces in the room.

Take frequent breaks and change position!

A well adjusted ergonomic workstation is important. However, a "perfect" ergonomic working posture does no good if you spend too much time in it. The ergonomic setup is therefore only a part of the equation. Our body's needs variation. The next position is the best position! Change position often. You can even lean back and place your legs on the table from time to time – this is ok! Also, try the following tips as a minimum recommendation:

  • The 30-60-rule: For every 30 to 60 minutes, take a 30-60 second brake where you get up on your feet and move around.
  • The 20/ 20/ 20-rule: Rest your gaze: For every 20th minute, look 20 seconds on a place 20 feet away.

avslappet
Photo:
www.colourbox.com