Chronic ankle instability (CAI) after ankle sprains has been shown to cause foot and ankle disability. Although rehabilitation programs for patients with CAI have been performed in related studies, few researchers have studied overall performance including pain, balance, and isokinetic torque. The purpose of this study was to determine if a short-term rehabilitation program that addressed range of motion (ROM), functional muscular performance, and neuromuscular control, can improve the foot/ankle disability index (FADI), FADI-Sport, ROM, star excursion balance test (SEBT), and isokinetic torque for patients with CAI. Prior to the experiment, we investigated the principal injury site through an administered questionnaire on 236 potential participants, and selected 18 male subjects aged between 21 and 23 years. 9 subjects (rehabilitation group, RG) with unilateral CAI took part in the rehabilitation program for 4 weeks, whereas 9 subjects (control group, CG) did not participate in that program. The results were as follows; the RG significantly increased FADI, FADI-Sport scores, and ROM on the injured limb compared with the CG. Also, the RG had greater SEBT reaches and improvements in isokinetic torque compared with the CG. In conclusion, these results demonstrate that a short-term rehabilitation program can improve functional limitations in patients with CAI.
Balance Brain Lesions Eccentric Muscle Contraction Walking The purpose of this study was to identify the effects of eccentric muscle contraction program on walking and balance ability of children with brain Lesion disorder. Two children with brain Lesion disorder were participated in this study. The subjects are spasticity, which makes the body too tight or difficult to adjust. The numbness of the limbs or numbness of the muscles of the legs due to involuntary exercise paralysis is frequently changed, and excessive shaking occurs in addition to the intended actions. The intelligence estimated by the Intelligence Test and Visual-Motor Integration Development Test (VMI) is equivalent to Severe Mental Retardation Level (IQ / VMI: less than 35). The test was conducted for 12 weeks and the subjects had eccentric muscle contraction program for 50 minutes a day and twice a week. To assess the walking and balance ability subjects were tested on following items: Walking ability for 6 m forward walk test, 10 m forward walk test, 3 m backward walk test, stair up 4 steps and stair down 4 steps. Balance ability for single leg stand in opened eyes and closed eyes were measured. In the case of subject A and B, 6 m forward walk test was reduced by 6.2%(A), 3.2%(B) and 10 m forward walk test was reduced by 6.6%(A), 6.2%(B). 3 m backward walk test reduced by 4.2%(A), 1.3%(B) compared to the pre-test. Stair up 4 steps was reduced by 2.9%(A), 4.3%(B) and stair down 4 steps was reduced by 6.7%(A), 3.2%(B) than the pre-test. Single leg stand in opened eyes was increased by 21.6%(A), 24.6%(B) in the right foot and the left foot was increased by 20.2%(A), 35.8%(B). Single leg stand in closed eyes increased by 8.1%(A), 17.5%(B) in the right foot and the left foot was increased by 10.9%(A), 11.1%(B). Those result show that the eccentric muscle contraction exercise program had positive influence in the walking and balance ability for children with brain lesion disorder.
Song, Sang-Hyup, Park, Woo-Young. The Effects of Figure Skating Training on Equilibrium Sensory Organization and Vestibular-Ocular Reflex. Exercise Science, 22(4):319-327, 2013. In order to determine the effect of figure skating on the functional plasticity of the vestibular system and sensory organ, we quantified sensory organization and vestibular-ocular reflex(VOR) in intensity in 12 female figure skating and 12 matched control subjects. Sensory organization test were conducted by posturography in neuroCom EquiTest and vestibular stimulation consisted of four cycle of sinusodial rotation(.01 Hz, .04 Hz, .16 Hz, .64 Hz, 60 °/s). The results are as follows. Balance score and balance strategy score were higher than control, but were not significantly different. And figure and control group used somatosensory system to balance. During sinusodial stimulations, the skaters' VOR, as compared with that of the controls, demonstrated a significantly lower gain(p<.05), and phase advance(p<.05). Symmetry was significantly lower(p<.05) than in control subjects. Quantitative alterations in VOR parameters observed in figure skaters probably result from vestibular habituation induced by repeated unusual stimulations when practicing figure skating.
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