I want an exercise bike without seat to exercise legs

shopndrop

I am trying to find something like an exercise bike but without a seat. It is for my dad who has been using something similar when he has been for physiotherapy to help build up leg muscles. You can use it sitting on a chair and it exercises your legs. Any idea what they are called or where I can buy one?

flea72

http://www.betterlifehealthcare.com/view_product.php?prodID=127

is this it?

flea

shopndrop

Brilliant, thanks.