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juta sanoi:joku vaan sanoi että on haitallinen se laite, aiheuttaa pullistumia selkärankaan. en kyseistä liikettä tee, halusin vaan tietää kuinka totta.
Seated spinal twist machines allow the user to flex the lumbar spine while twisting. This results in excessive force on the spinal ligaments. To avoid this problem, remain in an upright position and perform the movement slowly and with a limited range of motion.This machine is a disaster waiting to happen.