If you are looking for an upright exercise bike for serious training and workouts you will probably be most interested in this type of exercise bikes. Indoor Cycling bikes are upright bikes that are mostly mechanical and use a friction based resistance mechanism although some models have electronic panels to monitor your workout.

An indoor spinning bike is a cycle that is designed to make you feel as if you are cycling outdoors. You can simulate different terrains to get a good cardio workout. Spin workouts typically involve instructor-led interval training with climbs and sprints. Spinning works the quads, hamstrings, buttocks and back muscles. The main difference between a spinning bike and stationary exercise bike is a spinner has a flywheel used to simulate momentum. These bikes are usually provide easy access to unlimited resistance levels and easy riding position adjustments.