"...The Nada-Chair Back-Up is an ideal product for individuals with back pain as it supports the spine in an aligned position, relieving the pressure placed on the lumbar spine. This allows individuals to sit comfortably for long periods of time -...Being a long-range back pain sufferer, ... I personally find the Nada-Chair Back-Up one of the most comfortable back supports available and am particularly pleased with its portability...I wholeheartedly endorse the use of the Nada-Chair Back-Up for patients and individuals who wish to prevent back pain.
Arthur H. White MD
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REHAB THERAPIST TESTIMONIAL
"The Back-Up is effective primarily, because it allows the ILIOPSOAS muscle to relax. It takes the job over for this muscle and helps put a stop to this potentially serious sequence of events...I now recommend to all my patients that if they must sit for prolonged periods that they use the Back-Up support."
Simon Wakefield R.M.T., Rehabilitation Therapist
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World Chiropractic Alliance Endorses Nada Chair
"Congratulations! Your Nada-Chair/Back-Up has won the endorsement of the World Chiropractic Alliance. We are pleased to offer you this Special Achievement Award for your company’s unique contribution to research, ergonomic design and the promotion of spinal health and alignment."
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NASA - Used by astronauts in space
"The crew members of the Shuttle liked the Back-Up for relieving micro-G induced back pain." Marsha Ivins, NASA Astronaut
"Is S'port-Backer covered by medical insurance?
This all depends on the condition that is being treated and the insurance company in question. Many insurance companies will cover the expense as long as it is prescribed by your physician to remedy a back ailment. In the United States you can tell your doctor to apply for coverage as a spinal orthosis under CPT code 99070." (p. 16)
"Oh, my aching back! Now comes the Back-up that ensures proper posture. Used by physicians to help back pain sufferers learn better posture."
"Nada-Chair reduces muscle strain when you sit for long periods. The results: improved posture, fewer backaches."
"Nada-Chair helps stabilize the pelvis and relieve muscular stress. It can be used in conjunction with conventional seats such as office chairs, couches, passenger seats in cars, buses, airplanes or trains."
"Enjoy the outdoors without straining your back - very comfortable where you don't have support."
"Alleviate lower back pain and tight neck muscles with Back-up. The back support secures the lower back and relieves stress on upper area muscles caused by long periods of sitting. The Back-up is easy to use - ideal when sitting on benches and stools, at ball games or concerts."
"Keep your back from aching during stints at the ballpark or in a fishing boat. This sling tilts the pelvis forward and helps reduce slouching. It will keep your back from aching."
"Real losers are the fans with problem backs sitting in the stands. The Nada-Chair gives lower back support to these masses."
"Back-Up is a natural, drugless solution to lower back pain. It promotes good posture and alleviates back pain caused by stress on the muscles and ligaments that support the spine. The Back-Up gave instant relief. Impressive!"
"Nada-Chair has impressed professionals & laypeople alike--clinical studies provide evidence supporting the use of the product."
"This user-friendly device keeps the pelvis tilted forward to prevent slouching."
"Sheer bliss! It puts the pelvis in the right position so the rest of the body can’t go wrong."
There have been a number of scientific studies conducted to test various aspects of Nada-Chair's back support system addressing the following questions:
Do Nada-Chair's back supports improve posture and restore natural back curves?
Can these products prevent musculoskeletal disorders?
Is there a decrease in muscle activity in the back pointing to a more relaxed posture?
How do users experience the difference in posture with and without the supports?
Is the pressure placed on the knees acceptable?
Physical Therapy Studies:
In April 1989, two studies were completed at Schools of Physical Therapy in Canada and US. Both were designed to test the manufacturer's claims regarding their products improving posture. The Canadian study analysed photographs of subjects sitting with and without the Nada-Chair. Further, subjects filled in a questionnaire regarding their experience of the product. The US study measured the lumbar curve of subjects first while standing and then while sitting both with and without the Nada-Chair. Both of these studies prove the manufacturer's claims that the Nada-Chair provides a significant improvement in lumbar lordosis which, in turn, leads to better sitting posture.
Clinical Resources Study:
In 1995, the Journal of Occupational Rehabilitation published a study by two California researchers in the field of sEMG. The Effects of Chair Design on Back Muscle Fatigue were studied by use of electromyographic instruments that measure the activity of paraspinal muscles on seated subjects. The researchers were interested in what effect the use of the Nada-Chair would have on the level of muscle activity required for sitting. They made comparisons of people sitting on 1) a standard ergonomic office chair, 2) the so-called kneeling chair (Balans chair) that has no back and 3) the Nada-Chair. The results showed a significant reduction in muscle activity in the mid and upper back as well as a reduction in the lumbar area when using the Nada-Chair.
A Dutch institute in Leiden conducted a study, Evaluation of a Sitting Aid: the Back-Up, including both objective and subjective measures. While some of the EMG findings of this study stand challenged by a study published later with larger samplings, (this study's subject sampling involved only 2 healthy males in the first study and 5 each, males and females in the second), it does include a useful study of knee pressures. Results led to a modification and re-test of the Back-Up using cushions (now sold as accessory CushShins) that widened the area of pressure dispersion on the knee/shin. This improvement resulted in a significant perceived increase in comfort on the knees as well as"positive objective and subjective effects on the posture of the neck and upper back and no unacceptable effects on the other parts of the body...."
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