One with a more upright riding position, like a cruiser or a townie.
If you can find one, try a recumbent.
There's no set answer to that, it depends on what your preferences are. If you want a bike that's easier to get moving - get a lower gearing(bigger sprocket). If you want a higher top speed - get asmaller sprocket.
Lumbar is the adjective used to describe the lower back. For instance, "The lumbar support in that chair makes it easier to use it for long periods of time."
Go to your nearest bike shop and they will do it for you. You just pull the clip thing on the side/under the seat and push the seat down and then push the clip back.
no it is a pos
A light bike is easier to get moving.
The person who rides on the back of a bike is a passenger.
Any bike can be turned into a fixie, at varying degrees of difficulty. But if the rear wheel can be moved back & forth to adjust chain tension it'll be so much easier.
make it breathe easier. free-er flowing air intake, exhausts and alter carburation to suit. lower the weight of bike and or rider.
its the fracture of the lumbar spine at the level of the lower back above the sacral spine its caused by sitting or falling down on your back people with osteoporosis have fractures of the lower back easier due to their bones being brittle.
it is easier to pedal with longer cranks because you have more leverage but it is not necessarily better to have really long cranks.
The difference in the elliptical work both the upper and lower body, arms and legs and the bike only works the lower body and legs choose the one you like.
A home exerciser bike is a great purchase to help you keep in shape, be it a standard or recumbent. If you have back problems, a recumbent might be easier for you to use without injury.