Figure 2-1. Standing position.
Figure 2-2. Sitting position.
b. Body Mechanics. Body mechanics is the coordinated use of the body parts
to produce motion and to maintain balance. The use of good body mechanics promotes
the efficient use of muscles and conserves energy. The following principles apply to
any moving or lifting activity:
Face the direction of movement.
(2) Use large muscle groups of the legs, arms, and shoulders to lessen the
strain on the back and abdominal muscles.
(3) Bring the object to be lifted or carried as close to the body as possible
before lifting. (This keeps both centers of gravity close together.)
Bend the knees and keep the back straight when leaning over at work
(5) Kneel on one knee, or squat, and keep the back straight when working
at the floor level.
(6) Push, pull, slide, or roll a heavy object on a surface to avoid
Obtain help before attempting to move an obviously unmanageable
(8) Work in unison with an assistant. Give instructions and agree on the
signal to start the activity.