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Old 01-24-2013, 05:18 PM   #10
ChrisHein's Avatar
Dojo: Aikido of Fresno
Location: Fresno , CA
Join Date: Apr 2005
Posts: 1,646
Re: A simple mechanical model of body use.

Hunter Lonsberry wrote: View Post
With your arm resting at your side, raise it up over your head.---

Now try and see if you can use the triceps, and the area underneath the armpit while relaxing and not activating the shoulder.
I've been trying this for a few minutes only, but I can't do it. I'm usually pretty good at figuring these things out, and I'll keep trying.

But by thinking about how my muscles work, I can't figure out how I can raise my arm like this, and not activate the shoulder. Because muscles only contract, I can't figure out how the muscles below my arm can raise my arm. When holding weight, I can activate my lat for more support, but there is no doubt, when I try it, that my shoulder has to activate.

Can you (or anyone) make a video of this, so we can see the shoulder muscles? If I touch my shoulder, I keep feeling it activate when I raise my arm.

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