Page 123 - IT_Play_V1.0 Class9
P. 123
Key aspects of typing ergonomics are given below:
Sitting Posture
Maintain a neutral posture with feet flat on the floor or on a footrest, and knees at a right angle. Sit up straight
with the lower back supported.
Elbows should be slightly higher than wrists
when operating keys/mouse
The desk should
be approx.
680-720 mm high
The back support should be at an
angle of 90 to 100° and supporting
the lumbar curve
Hips should be slightly
higher than knees
Feet should be There should be approximately 2-3
supported on the finger width clearance between the
floor or by footrest front edge of the seat and the back
of knee
Sitting posture while working on computer
Position of Hands
Place your forearms parallel to the keyboard with your palms facing downward. Ensure your wrists are kept
straight and allow your elbows to hang naturally. Keep your elbows neither touching your body nor too far
away from it. Maintain an approximate 90-degree angle at the elbows.
Correct position of the hands and body while typing:
too close ideal range
back pain
tilted monitor
straight
back
relaxed arm
knee pain
arm rest relaxed foot
ankle pain
ideal sitting posture
wrong sitting posture
The chair and table height should be such that the shoulder, arm, and wrist muscles are free from any
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The wrists can touch the tabletop. However, do not put even a small portion of your body weight on your
wrists.
Use Keyboard and Mouse for Data Entry 121

