Effect of selected ankle supports on resistance to inversion force and range of motion.

Abstract

The purpose of this study was to determine if the ankle supports chosen were able to provide increased resistance to inversion, as measured by moment of force, without limiting plantar flexion or dorsiflexion. Resistance to inversion moment of force was measured on an isokinetic dynamometer (KinCom) in passive mode, for six support conditions (low-top (LT) and midcut (MC) shoes with semi-rigid and flexible orthoses). The braces used were the Active Ankle T1 Trainer (AA) and the Ankle Stabilizing Orthosis (ASO). The shoes were ASICS Gel Airier volleyball shoes in low-top and midcut models. It was found that there was a significant difference in resistance to inversion moment of force mean, between the MC alone and the LT with AA. It was concluded that the best support condition was the combination of LT and AA. It decreased sagittal range of motion the least and provided increased force to resist inversion as compared to the control condition (LT). (Abstract shortened by UMI.)