Cliff Eaton, MSC PGC MCSP, Chartered Physiotherapist


As part of our commitment to fully exploring the positive benefits of using the GRAVITY system, we carried out a series of research projects.

One of these involved a patient with a ten-year history of low back pain. Living with pain for such a long period of time has a mental impact as well as a physical one.

We wanted to test the extent to which using GRAVITY could improve his posture, and the effect this would have on his levels of pain.

The photos below show him on the Chattanooga Huber 360 Neuromuscular assessment system.

Huber Analysis before and after



Before using GRAVITY (left) the patient can be seen bent over to the right-hand side.


After using GRAVITY (right), he has a more upright posture.





The Huber system is useful because it collects data through force sensors built in to its platform and handles about the patients’ strength, coordination, balance capacity, and mobility restriction.

The data from this is displayed in the two circular graphs, which show the range of pain-free movement in his lumbar spine.

Huber system before data




Before using GRAVITY, the graph shows that this is unevenly distributed. This can lead the patient to favour one side of his body over the other, which can cause more problems, and does not give the pain opportunity to disperse.





Huber system after data




After using GRAVITY, the circular graph shows a more even distribution, and a greater range of pain-free movement than before using the device.





We also used gait analysis technology as part of our device testing.

This studies the way that the body reacts and behaves, usually during a forward movement such as walking. When you walk, this generates different forces.

The ground reaction force is the amount of force exerted on the body in reaction to your foot landing on the floor.

The pink line on the charts below shows the distribution of the ground reaction force throughout the body.

Gait analysis ground reaction force before




Analysis shows that before using GRAVITY, the pink line is not very symmetrical, which means that the ground reaction forces were all being transmitted through his right side.










Gait analysis ground reaction force after




After using GRAVITY, the force distribution was equalled out between the left and right sides of the body.

A more central distribution of force means that there is not just one part of the body doing all the work, and therefore getting tired more quickly and experiencing more pain.










This test is one of several research projects undertaken by GRAVITY, and the results are very promising.