In Reply To:
In Reply To:
In Reply To:
Since not a single person has mentioned them yet as an
alternative to running (link is to video of someone who won first race after 6 months of zero running) I will:
PowerCranks.
Maybe the reason no one has mentioned them is becuase they are not a substitute for running. They are cycling.
You're sure of that, are you?
Things you have to ask yourself:
1) Am I replicating the shock loads of running with PCs?
2) Am I replicating the full range leg muscle motion with PCs?
3) Am I replicating the upper body muscle motion with PCs?
4) Or, combining 3 and 4, am I replicating the overall muscle kinematics with PCs (how about lateral stability?)?
5) Is my motion unconstrained as in real running or fully constrained as in cycling with PCs?
From an aerobic perspective, there are several parallels, but aerobics is but a part of the overall picture. The big one, IMO, is #5 above. With running you can change your stride length. With PCs, you are constrained and the response is COMPLETELY different (again, IMO).
Heck, even cycling isn't a good substitute for cycling! Cycling in a road vs. tri vs. 'bent position all work slightly different ways.
FWIW, for astronauts the weekly exercise is primarily composed of 3 types of exercise: cycling, running, and weights. The running and weight machines are designed to give a similar response as in a 1-g ground environment.
BTW, did you get feedback from the others in the PC study? It's been several weeks now and haven't seen any details.