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According to Siff, the most effective type of plyometrics is what Verkhoshansky calls the shock training method. Siff, who is currently writing a how-to book on this subject for coaches and athletes, says that shock training  is a method of mechanical shock stimulation that forces the muscles to produce as much tension as rapidly as possible. It is characterized by an intense muscular contraction that is preceded by a relaxed state. <br><br>Stepping off a box (not jumping, as the thigh muscles must be relaxed during the fall) and immediatel rebounc-;r!JW4PgZ:~;8  X g;%+`z{b8ՈL*tPh() (`A ;t~srTs?*+<$0(2H1&ۿW3ƌ~g TD$?0# L1|ae ᘁ4݊c]L}P$'Ҋ@_gH0 }qh$4v1⥷܇e~ݸs8n$Ri3[uA:`xdya!1>ҰaܫՑ)X nMV'i)HAʽƾqu"ld80 I]?s?iM' sZ@fAȿ95dUsuҦ{Hf=I=j<#_ L[Sn"_M\/cw0a[ {Z\g{ o4``c?򦙜rR|IvF7,<~Msw/=4r$=K%H'/'Wu|3[nMF t֙*' n./a{3o; y}J6Ce}ؗ OMܪv];sSse \X"*֢X 9o-,F ڭEJ};SH8Ґ9 n@9p0# 4'Urj @1L9;d2W(h&]˱9qA2[.B򀽽%n?j"# dcHǵG;!<ڬcLOr;-4F?mīqxk@OԞ$Fy9AԎ:OBRH2~RB @1ү0 `{P!<iTܻ > s1.I9u%u$X^7rNH.{栏k{=(ݷsi{'8 mPtUiIc{on94 " T AjpqY q}ތ ءc`qfxdJuJlݓm6Kv3bvGr3obM 9ZKqv1$29J@@NԲQIHIܶrˏNjԜ *+s>B+g_^}A4 zeǷOʢ_k?Ωeq%o5.$~k: }Ң\H PgzV!#Ҩ9luUnȢ@D3veloped during the eccentric phase energy that can be refocused to help an athlete jump higher and farther and run faster. As illustrated in Figure 1, a delay as long as .25 seconds would prevent the athlete from being able to use that energy, and the activity would have to be regarded as low- or medium-level plyometrics. Says Siff,  A useful visualization of shock training is to imagine that the surface being touched by the hands or feet during the plyometric contact phase is red hot, so that any prolonged contact would be dangerous. Verkhoshansky s research has revealed that shock training is the most effective type of plyometrics. In one 12-week study, Verkhoshansky divided track and field athletes into two groups. The first group performed 1472 low-and medium-level plyometric activities, including squats. The other group performed 475 jumps using the shock training method. Although the shock training group performed a third less work, these athletes showed greater improvement in reactive ability than the group using traditional methods.<br>Again, this is why you should regard weight training (including the Olympic lifts) nd most forms of commonly used plyometrics as valuable  readiness activities for shock training. <br><br>Shock training is a powerful tool for athletic training, but because it places such high levels of tension on the muscles and stress on the nervous system, it must be approached with caution. This entails first developing a strength base with BFS core lifts, and perfecting the technique of the lower intensity shock training exercises. Accurate visualization of reactive movements, split-second decision making during sporting conditions, proper breath holding patterns, and