Here is an exercise equipment designed specifically to strengthen your legs from a sitting position. Leg Press comes with a large foot support, allowing a variety of moves. It has shock absorbers to stop the seat smoothly. There is also a display to give feedback on your performance.
More gadgets like this: here
Leg Press measures 82″ long, 48″ wide, and 77″ high. It weighs 638kg. The above video shows what you can do with it.
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