What some Users have said about Nada Chairs
"Your product was recommended by my Osteopath of the Brownswood Osteopathic Practice in Finsbury Park, London, who recommended it and who even lent me his own to see how good it was."
Gareth Walker, London N4
"My husband and I got our Nada Chairs more than 10 years ago and I hate to think what state our backs would be in if we didn't have them. I'm so pleased we are able to get new ones which seem to have improved."
Mollie B. Hitchin, Herts
"The difference my Nada S'port Backer makes on my fishing escapades is immeasurable. Now I can truly enjoy my evenings talking about the catch of the day without being troubled with back pain."
David F. Guernsey
"It's funny how you forget what it was like living without pain until you find your pain has disappeared and you can do things you thought would never be possible again. I have been amazed at the change this has made to my life in just a few weeks. I would recommend the Back-Up to anyone with backache."
Fiona W. Twickenham, Middx
"When I saw the skeletons posters at the Game Fair, I saw myself. I just had to buy a chair. I know my stoop is starting to disappear and I feel younger already."
Rachel O'H. Bristol
"The low back pain I felt working at my computer terminal all day made me feel I would have to give up work as it was affecting my ability to enjoy my kids at the end of the day. I had tried all sorts of rolls and cushions but they never stayed in place. Then my Mum brought a Nada Chair back from her holidays which I tried and have used it ever since and it has worked wonders."
Nicky W. Sherborne, Dorset
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In 2005 the Nada Chair was reviewed by the Product Panel of BackCare (registered as the National Back Pain Association - the UK's charity for healthier backs) which concluded among other things that the Nada Chair "functioned according to to the manufacturer's claims", "was satisfactory in providing pain relief", "was user friendly" and "provided support in several situations including working at the computer and watching television". Their review panel produced an assessment report (click here to see the full report) and also awarded their certificate
The certificate states "The Nada Chair has been assessed by the BackCare Product Panel and is considered suitable for use by back pain sufferers insofar as the product complies with current statutory regulations and achieves the intended purpose claimed by the manufacturer". To find out more about BackCare go to www.backcare.org.uk
Dr. Arthur White is a specialist spine surgeon and Founder of the San Francisco Spine Institute. He is an enthusiastic endorser of the Nada Chair. "One of the most comfortable means of sitting that I have experienced."
Simon Wakefield R.M.T. is a Canadian health-care professional who says "I recommend all my patients use the Nada-Chair for sitting long periods."
Terry A. Rondberg is a practising Chiropractor and President of the World Chiropractic Alliance which recognised the contribution made by Nada Chair to research, ergonomic design and the promotion of spinal health and alignment. "Nada-Chair has won the endorsement of the World Chiropractic Alliance".
What the Press has said
"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".
"Enjoy the outdoors without straining your back-very comfortable where you don't have support."
Fish & Game Finder Magazine
"This user-friendly device keeps the pelvis tilted forward to prevent slouching."
Scientific Studies of Nada Chairs
Since 1989, 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?
Some of the early studies were conducted in a university setting by students earning their medical degrees. Others have been conducted by independent institutes and clinics. At least one foreign study, in Japanese, has not yet been translated into English.
Physical Therapy Studies
In April 1989, two studies were completed at Schools of Physical Therapy in Canada and the 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 EMG (Electromyograph). 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 had sitting subjects tested to make comparisons among
- a standard ergonomic office chair
- the so-called kneeling chair (Balans chair) that has no back
- 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.