Supertraining
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[Supertraining] Re: Static Contraction Training Dr. Michael Yessis Mon Jul 14 07:07:51 2008
[Telle writes: -- Practitioners recommend anywhere from 100-140% 1 RM. Most recommend using a weight that can be voluntarily halted or at least lowered at a 3-6 second rate -- does anyone use a weight that cannot be slowed and descends at a 180° a second rate?] ********************* Reply by Yessis: Not that I know of. An altitude jump may do this. [Telle writes: -- then why is isometrics more beneficial -- since force cannot be measured -- unless sophisticated load cell equipment is available?] ************** Reply by Yessis: more beneficial than what? The force can be measured. ****************************************************** Dr. Yessis wrote: -- All exercises are dynamic. Isometrics is never for max strength of any body part. [Telle writes: I can see the reason for isometrics for those body parts that remain stable during exercise though I would still tend to believe that loading the trunk inertially would be more effective than statically] *********************** Reply by Yessis: I don't believe I ever said or implied that you should load the trunk isometrically. It gets loaded when doing isometrics in a position that requires trunk stabilization. Dr Yessis wrote: -- of the parts stabilized?? [Telle writes: -- At the isometric phase of an E-I-C (eccentric-isometric- concentric) dynamic lift wouldn't all "parts" be stabilized? Isometric forces are quite a bit greater as a function of eccentric history. I'm thinking a static isometric effort is non specific to dynamic E-I-C actions?] REPLY -- I agree Michael Yessis, Ph.D Professor Emeritus, CSUF President, Sports Training, Inc. [EMAIL PROTECTED] www.dryessis.com <http://www.dryessis.com/> 760-480-0558