Dr. Johnny Benjamin stated his belief that soccer kicks could cause serious injury, based on the assumption that an MMA fighter would be able to generate the same amount of force in a soccer kick as a professional association football player. Some MMA fans argue that no-one has ever been seriously injured from a soccer kick and stated that there were already equally dangerous moves allowed in MMA. Dr. Johnny Benjamin argued that soccer kicks could result in broken necks and paralysis if performed with the wrong positioning and high velocity.