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| M | | | Material Intelligence:
Term used to describe materials whose properties change for the benefit of the user during use. Eyeglasses with lenses that darken in sunlight possess this "intelligence", as does the shell of the Equa chair, which flexes to increase lumbar support as the user reclines.Mechanical contact stress:
The contact of the body with a hard surface or edge that results in the compression of tissue. Can also result when using a part of the body as a hammer or striking instrument. Medical management:
The effective use of available health-care resources to prevent or manage work-related musculoskeletal disorders. Medical management is an element of the ergonomics program. Muscle Tonus:
A state of partial contraction characteristic of normal muscle. Loss tonus occurs when there is insufficient stimulation of the muscle for prolonged periods of time, as when maintaining a single seated posture.Musculoskeletal disorders:
Illnesses and injuries that affect one or more parts of the musculoskeletal system. Musculoskeletal system:
The soft tissue and bones in the body. The parts of the musculoskeletal system are bones, muscles, tendons, ligaments, cartilage, nerves, and blood vessels. | | |
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