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Frederick C. Hatfield sanoi:

BACK EXTENSIONS
Picture this: The great Olympic weightlifter Vasily Alexeev’s ponderous body draped over a gymnastics long horse with his feet wedged between the stall bars of an unbelievably archaic training gym in Moscow’s Lenin Institute of Sport. With four hundred pounds precariously perched behind his head, he explodes for five reps of back raises. There is virtually NO hip extensor involvement, only pure erector spinae contraction. That means 1) tremendous low back limit strength and speed-strength is developed far beyond what any other low back exercise could possibly accomplish, and 2) virtually NO trauma to the tenuous intervertebral discs of the lumbar spine, which is something no other low back exercise ever conceived can claim.

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