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A long Achilles is good for the standing vertical jump, whereas a short Achilles is good for a one-leg jump because it allows a shorter (quicker), more powerful rebound.

The thing with the highly attached Achilles (high cut calves) is that they are usually present in people that also have a bunch of other structurally advantageous factors (narrow hips, long legs etc etc). So it's not just the long Achilles in these people, the long Achilles is just a good indicator of a overall "solid" structure for jumping advantage.

Check this out

http://www.liveleak.com/view?i=752_1386951921

Amazing

I've read it now... what can I say... anything that improves muscular irradiation is good in my books. It doesn't matter if it's a belt or you actively squeeze the bar (tense the forearms), squeeze the abs and squeeze the glutes.

All these three things will increase the power output in any other major muscles in the body simply because of the irradiation effect - the CNS will recognize the event as a more "stable" environment if you will and will allow more CNS power output in the main movers.

I am going through a physics course and I had to cut a segment of it and paste it here, I thought you guys might be interested:

<a href="http://www.youtube.com/watch?v=dr-_Vk3lDSE" target="_blank">http://www.youtube.com/watch?v=dr-_Vk3lDSE</a>

Looks good ^^^

Quote from: Raptor on December 11, 2013, 07:22:04 am

Yeah they're really not... that's another one of your crazy self-imposed ideas based on nothing.

Not nothing, guilt from association with those who do heavy belted squat mornings but can't front squat (=leg and athletic check) for shit.

Well, then you'd be right haha

What a belt does is improving intra-abdominal pressure and CAN give you some proprioceptive feedback. I always wear a belt at heavy weights (think 130 kg+).

Why? Because 1) my core strength sucks and 2) this will allow me to use heavier weights and target my legs more.

The problem with the belt is when you wear it all the time.

Also, the reason why it creates more intraabdominal pressure is because you have something to push against with your belly. I don't actively "push against" when I wear it though, I just flatted my abs.

It's similar to this: imagine you make a fist in the air and try to get the best possible contraction in your triceps. Then do the same thing while pushing against a wall or something. You will get a better triceps contraction. Same with the abs and the belt.

http://www.youtube.com/user/catoaspmo