Supertraining
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[Supertraining] Re: Static Contraction Training JRTELLE Mon Jul 14 07:05:01 2008
In a message dated 6/1/08 1:12:37 AM, [EMAIL PROTECTED] writes: > Greetings all, > The following is a continuation of Yessis Telle isometric (no pun intended) dialogue. Isometrics strength training Dr Yessis original: Eccentrics should be done for > > approximately 15% of the time Telle wrote: -- What is the eccentric protocol? Dr Yessis wrote:-- over 100% for overload [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?] ********************* Dr Yessis original. The isometric contraction plays three important roles. First, it is > > needed for overcoming sticking points which most athletes experience > > in execution of different exercises. ------------------“ > > Telle wrote: -- What about short range movements in a power rack instead of > isometrics -- offering a quick and easy force evaluation. > Dr.Yessis wrote: -- Not the same [Telle writes: -- then why is isometrics more beneficial -- since force cannot be measured -- unless sophisticated load cell equipment is available?] ************** Yessis original. -----------------When you execute the squat, isometric contractions are needed to hold > > the spine (your upper body) in position as the legs do the work. This > > entails contraction of mainly the erector spinae muscles of the > > spine. In the overhead press you need isometric contractions to hold > > the trunk erect and to maintain a strong connection with the legs. ---, etc., > > > Telle wrote: -- and the "stabilization of body parts during > exercise execution" doesn't occur during dynamic lifts? Or are the isometrics > an overload system for max trunk strength? 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] *********************** Yessis original. The third reason for inclusion of isometrics in your workout is to > > strengthen the muscles in this regime to enhance an explosive > > muscular contraction. ------------------------- ----------------- > > The isometric contraction occurs in all exercises when you change > > direction and when you change from one muscle contraction regime to > > the other. It is a momentary contraction, but it still occurs and > > plays a very important role. Thus, you need isometric muscle > > strengthening to enhance the different roles that it plays. > > > Telle wrote: -- do training isometric forces at the bottom position equal those isometric forces of the dynamic movement? 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?] Musings, Jerry Telle Lakewood CO USA