Anushka Banister. chairs. August 21st , 2017.
Measuring to the back-rest upholstery may result in an incorrect measurement. Most back-upholstery is stretched and hung between two, free-standing, swinging supports (like a hammock), so measuring from the center of the seat to the center of the back-upholstery will result in a longer and incorrect dimension, as well. Some wheelchairs have add-on backs. Many of these mount forward of the back-uprights thus making unusable any seat surface located behind the add-on back.
What I like less is the company's marketing pitch. Its really does go on about its 'antigravitational properties' and how you sit in it in exactly the same way as NASA astronauts do when blasting off to who knows where. For the ordinary man on the street, what it really means by 'antigravity' is that when fully reclined, your ankles and feet are slightly more elevated than your head. This is undeniable a comfortable position for many, so why the company couldn't just say this and spare us the NASA techie stuff, I don't know. It just kind of insults my intelligence.
At any rate, the chairs should be ergonomically designed so that they give good lumbar support and they should also have sturdy arm rests. Some chairs will have a swivel and wheels, whilst others will be static. Which you choose depends upon several things including what surface your floor is. Make sure the chairs are well padded for extra comfort and that they conform to your country's safety laws.
Most of the exercises are very simple and easy to pick up, although some are slightly harder and need more practise they become easier as you go along and become more stronger and more used to them.
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