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Noise-enhanced dynamic single leg balance in subjects with functional ankle instability

Journal of Sport and Health Science 2012年第2期1卷 102-106页

作者： Scott Ross brent arnold Virginia Commonwealth University

Background:Stochastic resonance stimulation(SRS) transmits subsensory electrical Gaussian white noise into the body to enhance sensorimotor *** therapy has improved static single leg balance in subjects with functional ankle ***,the effect of this stimulation on dynamic single leg balance is not *** in dynamic single leg balance with SRS may have implications For enhancing functional rehabilitation for ankle ***,the purpose of this study was to determine the effects of SRS on dynamic single leg balance in subjects with functional ankle instability. Methods:This study was an experimental research design and data were collected in a sports medicine research *** subjects with functional ankle instability(69±15 kg;173±10 cm;21±2 years) reported a history of ankle sprains and instability at the ankle with physical activity.A single leg jump-landing test was used to assess dynamic *** were required to jump between 50% and 55% of the maximal vertical jump height,land on a single leg atop a force plate,and stabilize as quickly as ***-landing tests were performed with and without *** trials were performed for each treatment condition(SRS and control).A randomized block design was used to determine test ***/posterior and medial/lateral time-to-stabilization were computed to assess dynamic *** time indicated better ***-tailed paired samples t tests were used for analysis(α≤0.05). Results:SRS improved anterior/posterior time-to-stabilization(stochastic resonance = 1.32±0.31 s,control = 1.74±0.80 s,p = 0.03),but did not enhance medial/lateral time-to-stabilization(stochastic resonance = 1.95±0.40 s,control = 1.92±0.48 s,p = 0.07). Conclusion:Clinicians might use SRS to facilitate balance improvements with sagittal plane dynamic single leg balance exercises that patients may not be able to perform otherwise.

关键词： Chronic Posture Sprain Stochastic resonance

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