russ_watters
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Cycling is just one example of a low-impact aerobic activity. Rowing, eliptical machine, etc. - same diff, really.
Ice, the other wik link on interval training is more descriptive and says:
That fits with other things I've read about interval training, namely that if you are out of shape and can't sustain a high exertion level for very long, interval training will get you into shape faster than a low exertion for the same (or even somewhat longer) time. But if you are in decent shape and want to get in better shape (ie, a 15 mile per week runner and want to train for a marathon), there is no substitute for extremely long duration cardio.
Ice, the other wik link on interval training is more descriptive and says:
http://en.wikipedia.org/wiki/Interval_trainingIt is believed by many in the fitness industry that this method of training is more effective at inducing fat loss than simply training at a moderate intensity level for the same duration. This has been confirmed in at least two studies.[1] [2] It has been said that in some instances—like long-distance running—moderate-intensity exercise for long durations may actually preferentially burn muscle tissue as opposed to adipose. At present, however, there is no conclusive research to support any of these claims.
That fits with other things I've read about interval training, namely that if you are out of shape and can't sustain a high exertion level for very long, interval training will get you into shape faster than a low exertion for the same (or even somewhat longer) time. But if you are in decent shape and want to get in better shape (ie, a 15 mile per week runner and want to train for a marathon), there is no substitute for extremely long duration cardio.