Ergonomy: Lumbar and Thigh Support
The lumbar is the region of the spine between the diaphragm and the pelvis; it supports the most weight and is the most flexible. The adjustable lumbar mechanisms in seats allow the user to change the seat back shape in this region, to make it more comfortable. Some seats are long enough to support full thigh.
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Famous quotes containing the word support:
“War ... should only be declared by the authority of the people, whose toils and treasures are to support its burdens, instead of the government which is to reap its fruits.”
—James Madison (1751–1836)