Rotary Torso Machines

I seem to remember reading a warning somewhere about the safety/efficacy of a rotary torso machine - may have been an article by McGill? Chek? Grisaffi? or the like.

Is there any sound reason why, assuming a healthy spine, this exercise should not be employed? Any essential technique tips?
(I’m not looking for alternatives I’m simply curious as to whether it’s a worthwhile tool or a disc injury waiting to happen)

Ste

May have been Chek, but don’t quote me.

The MAIN problem with those machines is that the movement of the machine NEVER matches your natural body movement. So if you’re highly trained, the machine will detrain you, and if you’re not - well, in either case, repeated rotation under load at an unnatural angle will only lead to pain.

Maybe because the rotation is directed to the lumbar spine, which has about 18 degrees of rotation and they try to work it through so much more, inducing motion into an area that is better suited to stability work.

Also, doing unilateral work causes a moment of rotation that the rotatory muscles have to work against.

Is Rotation Even a Good Idea? - rethinking the importance of rotational training

http://www.michaelboyle.biz/documents/articles/Is%20Rotation%20Necessary.pdf

that’s why I do this exercise:

[quote]Wreckless wrote:
Is Rotation Even a Good Idea? - rethinking the importance of rotational training

http://www.michaelboyle.biz/documents/articles/Is%20Rotation%20Necessary.pdf

that’s why I do this exercise:

[/quote]

Rotation is a GREAT idea for me…

[quote]CHEKonIT wrote:
May have been Chek, but don’t quote me.

The MAIN problem with those machines is that the movement of the machine NEVER matches your natural body movement. So if you’re highly trained, the machine will detrain you, and if you’re not - well, in either case, repeated rotation under load at an unnatural angle will only lead to pain.[/quote]

I appreciate that no machine will ever allow “natural” movement to take place but was hoping a resisted rotational movement after making efforts to “centre up” beforehand may have its uses. Would a standing version (HammerStrength?) be more acceptable in that it might allow the body to more safely accommodate the subtle shifts in axis of rotation?

[quote]jp_dubya wrote:
Maybe because the rotation is directed to the lumbar spine, which has about 18 degrees of rotation… [/quote]

Armed with this knowledge then, would it just be a case of controlling ROM i.e. training smarter.

[quote]Wreckless wrote:
Is Rotation Even a Good Idea? - rethinking the importance of rotational training

http://www.michaelboyle.biz/documents/articles/Is%20Rotation%20Necessary.pdf

that’s why I do this exercise:

[/quote]

I very much respect Boyle’s stuff so it would be very interesting to see what Cressey and Robertson would think about this article

[quote]PGA200X wrote:
Wreckless wrote:
Is Rotation Even a Good Idea? - rethinking the importance of rotational training

http://www.michaelboyle.biz/documents/articles/Is%20Rotation%20Necessary.pdf

that’s why I do this exercise:

Rotation is a GREAT idea for me…[/quote]

Crucial I’d imagine.

C’MON EUROPE!!!

[quote]Ste wrote:
C’MON EUROPE!!![/quote]

Blow me!

U S A !

This has dried up but thanks for your input guys.