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MedSport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
Department of Mechanical Engineering at the University of Michigan, Ann Arbor, Michigan
MedSport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
MedSport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
To determine if the height of a basketball shoe alters the maximal inversion and eversion moment that can be actively resisted by the ankle in the frontal plane, we tested 20 healthy, young adult men with no recent ankle injuries. Subjects underwent unipedal functional ankle strength testing under weightbearing conditions at 0°, 16°, and 32° of ankle plantar flexion using a specially designed testing apparatus. Testing was performed with the subject wearing either a low- or a three quarter- top basketball shoe. Shoe height did not significantly affect an individual's ability to actively resist an eversion moment at any angle of ankle plantar flexion. However, tests at 0° of ankle plantar flexion demonstrated that the three quarter-top basketball shoe we tested significantly increased the maximal resistance to an inversion mo ment by 29.4%. At 16° of ankle plantar flexion, inversion resistance was also significantly improved by 20.4%. These results show that athletic shoe height can signifi cantly increase the active resistance to an inversion mo ment in moderate ankle plantar flexion. The findings apply to a neutral foot position in the frontal plane, an orientation equivalent to the early phase of a potential ankle sprain.
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