Peter Chopelas wrote >Last year George Dyson wrote and article for >Scientific American about native Aleut adaptation >to specialized kayaking skills. In it there was a >picture of an upper arm bone from a ancient >archeological site showing the mass and thickness >compared to a modern Aleut upper arm bone. The >implication was that repeated daily padding developed >bone mass in the arms. G'day Peter, Thanks very much for that reference I'll definitely be looking it up and my training regime now includes half an hours jogging 3 times a week - something I used to do fanatically. I already use the rowing machine - we did have a kayaking machine but it was nothing like paddling a kayak and you couldn't roll it:~)! I wonder whether it was paddling or the hunters lifting their quarry, (or both) which caused the arm strengthening? IE do I have to start hunting walrus to get a benefit? The effect is piezoelectric ie flexion in the bone produces a tiny electrical current, which alters calcium movement into bone cells. If you're right about the leg stiffness then stretches before and after should help, though I must confess to being a bit disappointed as I hoped it might have been the leg pumping action and indicate better paddling style. Thanks to everyone who provided feedback! All the best, PeterO *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Jul 19 2002 - 01:32:18 PDT
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