Ergonomics consists of six branches, namely anthropometry, biomechanics, labor physiology, environmental physiology, engineering psychology and time and work research.
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Related terms
1, functional size
Functional size refers to the dynamic human body size, which is the spatial range that a person can reach when carrying out some functional activities. It is measured in a dynamic human state. It is the amplitude produced by the coordination between the angle produced by joint activity and rotation and the length of limbs. This is very useful for solving many problems with spatial scope and location.
2. Racial differences
Different countries, different races, due to different geographical environment, living habits and genetic characteristics, the difference of human body size is very obvious.
3. Knee popliteal height
Knee height refers to the vertical distance from the ground to the back of the knee (leg bending) when people sit up straight. When measuring, the knee is aligned with the condyle in the vertical direction, and the exposed bottom of the thigh and the back of the knee contact the seat surface.
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