| |
 |
| Selecting The Right Chair |
 Back |
Febuary 24th, 2007
Consider your work tasks, and your body size and shape, when choosing a
chair. A single size or type of chair is not appropriate for all tasks,
and cannot suit all body shapes and sizes.
When you sit to perform a task, your spine is most comfortable when it's
in "neutral posture", a slightly reclined sitting position. The
following adjustment options can help you maintain "neutral posture".
SEAT:
- Height: Seat height should adjust to fit the height of the user and/or
the work surface.
- Tilt: The seat should adjust at a variety of angles to allow for
changing positions and postures for different tasks. A rocking mechanism
can provide continuous active repositioning while working.
- Depth: The seat should support your hips and legs, and provide a
1-2" space between the front edge of the seat and the back of your
knees. Sliding seat options can help you set the proper depth position.
BACKREST:
- Height: The backrest should adjust up and down to fit the curves
of your spine. Adjustable lumbar support is often necessary to accommodate
flat, average or deep low back curves.
- Contour: The backrest of the chair should support your upper and
lower back, while allowing free arm movement. If you recline, you may
need a backrest that extends up to your shoulders or neck.
- Angle: The backrest should adjust independently from the seat tilt
to provide optimal support for a variety of work positions, such as
reclining or leaning forward.
ARMREST:
- Armrest: Armrests can provide additional upper extremity and back
support when taking breaks or pauses between writing or keying tasks.
- Height: If you have armrests, they should be adjustable. Your forearms
should be able to rest on the armrests with your shoulders relaxed.
- Width: Inward and outward adjustment provides additional personal
fit. This is especially important with large and small stature individuals.
- Pivot: Pivoting armrests provide both width and angle adjustment
of the armrests.
SOURCE: UCLA Ergonomics |
| |
