John Ziegler, M.D., is often credited with inventing functional isometrics, but this is not, strictly speaking, true. It was a classic case of throwing the baby out with the bath water. When someone went on steroids, his lifts increased regardless of the type of training system he was used, so many people assume that the isometric program was just a smoke screen that allowed Bob Hoffman of the York Barbell Company to market thousands of power racks - and that isometrics were useless. The main reason isometrics fell from favor in the strength training community was the disclosure some years after the concept's introduction that those who had made fantastic gains on the isometric system were using steroids at the same time. On the contrary, isometric exercise - done correctly - is a terrific way to build strength. The concept has never been proven false, and the isometric contraction system is not at all worthless.
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