Zero Gravity Chair

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The term zero gravity is the brainchild of NASA and is used to describe the stance astronauts are placed in during takeoff for a space mission. When placed in this reclined position - with legs higher than the heart, the pressure is eliminated from the spine, thereby neutralizing the strain placed on the body during blast-off.

Zero Gravity The Perfect Chair - Manual Recline

In the upright position, gravity puts pressure on the spine, forcing the discs to squeeze and the spinal muscles to shrink to retain balance.

Under these circumstances, the heart has to work more to get the blood back from the legs to the heart. This has to be done to overcome the forces of gravity that cause blood to pool in the legs. This phenomenon also explains why people tend to be taller in the morning than at the end of the day. With the elevated position of the legs, the workload on the heart is reduced.

Using the NASA strategy, the zero gravity chair was developed. There are two different trains of thought in relation to what zero gravity means on planet Earth. One school of thought believes that the idea is to distribute the weight more evenly, while the other school adheres to the idea of elevating legs at or above the heart level. Either way, the chairs recline to bring the spine parallel to the ground and the legs just above the heart and to do away with vertical pressure on the spine and the ribcage. This creates the feeling of weightlessness, or floating in comfort, while promoting good circulation and helping to reduce swelling in the legs. The concept is well suited to the needs of people with back pains or heart problems.

A zero gravity chair is usually adjustable in a variety of positions, so the use of the chair is not limited to just relaxing. The zero gravity chairs can be used in the upright position, thus making them functional chairs for office use. A zero gravity chair can also be positioned to lean forward, so focusing on projects is easier or it can be used as regular lounge chair in the living room for the comfort of visitors or residents.

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