If you mean this kind of thing: http://stationary-bike-stand.org/a-b...y-bike-stands/
and if you live in a flat/apartment block,
then I would urge you to investigate the noise factor thorougly.
In our building, some years ago we had someone who used something like this, and people not just one but two storeys away could hear it, as a penetrating, spine-rattling, brain-numbing rumble.
There was quite a lot of discussion, difficult for some to broach, but overall polite and well-intended. When various types of sound insulation matting failed to dampend the sound sufficiently, for the sake of peace with the neighbours, they abandoned the idea.