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Our purpose was to examine the combined effects of thrust mobilization of the proximal and distal ankle joints in conjunction with a six-week rehabilitation program on ankle function in subjects reporting chronic ankle instability (CAI).
Joint mobilizations are reported to increase range of motion (ROM), postural control and proprioception, and decrease pain in individuals with CAI. There is no research supporting the combined effects of thrust mobilization and exercise on function in this population.
Inclusion and exclusion criterion were established and a convenience sample was performed. 19 subjects were randomized into the exercise only or mobilization (experimental) and exercise group. Both groups underwent 12 supervised training sessions across a six-week period. The mobilization (experimental) group also received high-velocity-low-amplitude (HVLA) thrust mobilizations at the talocrural, proximal, and distal tibiofibular joints prior to the first three treatment sessions.
An examiner blinded to involved limb and group allocation performed a baseline and six-week follow-up examination of muscle strength, joint mobility, range of motion, and/or functional performance. The participants completed subjective outcome measures at baseline, 2 weeks, 4 weeks, and finally at 6 weeks including the Functional Ankle Disability Index (FADI), FADI-Sport, and the Ankle Joint Functional Assessment Tool (AJFAT). Participants also completed baseline and a six-week follow up assessments of the figure-of-8 hop test, side hop test, and three directions of the Star Excursion Balance test (SEBT).
The exercise protocol is a modified version of the balance training program described by McKeon et al. Participants completed this protocol twice a week, for six weeks. Treatment sessions lasted approximately 30 minutes. Participants were individually progressed on particular exercises if zero errors were observed. In addition, all participants were given a home exercise program (HEP) to complete every day of the week excluding treatment days.
The mobilization (experimental) group received HVLA thrust mobilizations at the three joints stated above for the first three sessions prior to completing the exercise protocol. Each mobilization was performed one time at each joint. The order of joint mobilizations was randomized prior to administering.
Data analysis was performed using International Business Machines Statistical Package for the Social Sciences (SPSS) version (22). Alpha level was set p<0.05. Separate 2 x 2 repeated measures analysis of variance (ANOVA) were used to assess changes in the FADI, FADI-Sport, figure-of-8 hop test, side hop test, and three directions of the SEBT.
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment
High Velocity Low Amplitude mobilization, Exercise Protocol
Shenandoah University Division of Physical Therapy
Published on BioPortfolio: 2016-10-27T05:38:22-0400
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