Treadmill Sports Specificity, Overweight, and Biomechanics
The biggest concern is the degree to which I'm leaning on the treadmill for the bulk of workouts. I need to find a way to get good enough on the exercise bike to start enjoying it.
I think here I also have to recognize that a given beats per minute of heart rate on the bike might not be 100% equivalent to the same on the treadmill. This might be for a variety of reasons, but a big one is sports specificity. I have been essentially training myself to be a good treadmill walker over the past months.
What's the concern with the treadmill? It stems from a kind of lay understanding of biomechanics: I'm carrying an extra 100 pounds, and the weight-bearing, repetitive motion of a treadmill isn't 100% benign.