by the extreme speed at which the astronauts blast into space.
During take-off, astronauts recline with their feet higher than their hearts with a torso to leg angle of 126 degrees +/- 7. The reason zero-gravity is a preferred posture for astronauts is any slight amount of disc compression will be exemplified by the speed and force of take off.
Normal sitting postures can load 150 pounds of compression into the lower back, while standing can load 100 pounds of compression, and lying in a horizontal position can load 25 pounds of compression. Even a minor back or spinal disc problem can be exacerbated with 25 pounds of compression.
Zero-Gravity Recliners (ZGR) are designed to relieve the body of the pressures that cannot be relieved in a standing, seated or laying position or with other recliners that position the torso parallel to the horizon.
The spine is allowed to unload the compressional forces with a ZGR by raising the lower legs above the heart which has the following benefits:
* Less pressure on the spine
* Reduced muscle tension
* Less pressure on the heart and expanded lung capacity
* Increased circulation and increased blood oxygen levels Getting key information on products to make an informed selection decision can be confusing and time consuming.
Our Ergonomic Assessment System Index (EASI™) is a proprietary tool developed in conjunction with Health Practitioners and research to give you a simplified research based consumer perspective into product selection.
