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The effects of functional ankle instability on performance of the single-limb hurdle and single-limb hopping course in a braced and non-braced conditionWilson, Amanda Susanne. January 2006 (has links)
Thesis (M.S.)--Indiana University, 2006. / Includes bibliographical references.
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Effect of ankle stabilizers on vertical jump, agility, and dynamic balanceAmbegaonkar, Jatin P. January 2003 (has links)
Thesis (M.S.)--Springfield College, 2003. / Includes bibliographical references. Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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Prophylactic ankle brace deterioration an analysis of range of motion /Brown, Erik R. January 2008 (has links)
Thesis (M.S.)--Indiana University, 2008. / Includes bibliographical references.
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Prophylactic ankle stabilizers and their effect on lower extremity landing mechanics during drop jump landings to fatigueClanton, Tameka A. January 2009 (has links)
Thesis (M.S.)--Ball State University, 2009. / Title from PDF t.p. (viewed on May 07, 2010). Includes bibliographical references.
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Effect of ankle stabilizers on vertical jump, agility, and dynamic balanceAmbegaonkar, Jatin P. January 2003 (has links)
Thesis (M.S.)--Springfield College, 2003. / Includes bibliographical references.
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Influence of ankle orthoses on ankle joint motion and postural stability before and after exerciseJorden, Ryan A. 05 May 2000 (has links)
Ankle injuries comprise more than 15% of all sports injuries worldwide. The efficacy of the ankle taping for injury prevention has long been under scrutiny as numerous studies have shown that tape rapidly loses its ability to constrain ankle motion with exercise. Consequently, ankle braces (orthoses) are being used with increasing frequency for the prevention and functional management of ankle injuries. However, the motion restraining qualities of ankle orthoses have not been widely evaluated in closed kinetic chain environments under physiologic loads. The primary purpose of this study was to compare the abilities of four ankle orthoses (ankle taping, lace-up brace, semirigid orthosis and hybrid brace) against a control condition (no brace or tape) to control subtalar and talocrural motion during running on a laterally-tilted treadmill at 16.2 km/h before and after exercise. It has been hypothesized that ankle orthoses make a secondary contribution to injury prevention through enhanced proprioception. The secondary purpose of this study was to quantify the effects of the aforementioned ankle orthoses on
postural stability during single-limb stance following a bout of exercise. Fifteen healthy university students (8 men and 7 women) with no history of significant ankle injuries (age, mean �� SD: 22.9 �� 3.9 years) volunteered to participate in this study. Three-dimensional kinematic data were captured with an active infrared digital camera system sampling at 120 Hz. To address the first question, data analyses were performed using 2way univariate (Ankle Orthoses x Pre/Post-Exercise x Subjects) (5 x 2 x 15) repeated measures analysis of variance (ANOVA) to determine the existence of differences among three closed and four open kinematic chain dependent measures before and after exercise. Maximum inversion angles (MAXINV) were similar for all ankle orthoses, with no orthosis limiting inversion during tilted treadmill running significantly more than another, or compared to the control condition, either before or after exercise (p>.05). Pre-exercise MAXINV group means and standard deviations during treadmill running ranged from 6.8 �� 3.4 deg with the Royce Medical Speed Brace to 9.5 �� 4.1 deg in the tape condition; post-exercise MAXINV mean values ranged from 7.6 �� 3.2 deg for the Aircast Sport Stirrup to 9.1 �� 4.6 deg with closed basketweave tape. While not statistically significant (p=0.10), ankle taping provided the least amount of inversion restraint, both before and after the exercise bout. The MAXINV angles measured during treadmill running (8.2 �� 4.0 deg) and open chain inversion AROM measured with a goniometer
(34.5 �� 6.2 deg) were not related (r=-0.0003). The compressive forces present during closed kinetic chain activity are known to increase joint stability and thus may explain why MAXINV under dynamic varus loads was so much less in magnitude than inversion AROM measured under open kinetic chain conditions. The nonlinear relationship of these two variables supports our contention that reports of the motion controlling properties of ankle orthoses measured in open kinetic chain environments should not be used to infer the response characteristics of these same orthoses under dynamic, physiologic loads. To address the second question, data were analyzed using 3-way univariate (Ankle Orthoses x Pre/Post-Exercise x Eyes Open/Closed x Subjects) (5 x 2 x 2 x 15) repeated measures ANOVAs. Subjects' postural stability was assessed using a Biodex Balance System with eyes open and eyes closed conditions, before and after an exercise bout. The ankle orthoses evaluated did not influence postural stability as measured by mediolateral sway index, anteroposterior sway index, and overall sway index. Removal of visual perception via blindfolding resulted in significant decreases in all three measures of postural stability (p=.001). There was poor association among the closed chain postural stability parameters and the open chain AROM measures. These correlations ranged from r=.04 to .17, indicating minimal relationship between the amount of AROM permitted by the orthoses and postural stability as quantified by this method. / Graduation date: 2000
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The effect of a prophylactic ankle brace on knee torque during a drop landing onto a slanted surfaceFaber, Kandy. January 2005 (has links)
Thesis (M.S.)--Indiana University, 2005. / Includes bibliographical references. Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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The effect of protective knee braces on agility and muscle performancePolascik, Michael A. 08 September 2012 (has links)
Thirty-two Virginia Tech varsity football players served as subjects to examine the effect of protective knee braces on agility and selected isokinetic strength, power, and endurance measures. Each subject performed the Semo agility test in each of three experimental conditions: braced with the Anderson knee stabler (B,An); braced with the Arco knee guard (Bâ Ar); and unbraced (Un). The order of agility tests was randomized. The subjects were than administered a Cybex knee extension/flexion test at 60 deg/sec and 300 deg/sec. Each subject performed the Cybex tests in each of the three experimental conditions (B-An, B-Ar, and Un). The order of Cybex tests was randomized. The test protocol consisted of three maximal repetitions at 60 deg/sec and 40 maximal repetitions at 300 deg/sec. The following isokinetic variables were recorded: (1) peak torque/body weight ratio of the quadriceps and hamstrings at 60 deg/sec and 300 deg/sec; (2) average range of motion for knee extension/flexion at 60 deg/sec and 300 deg/sec; (3) average power, torque acceleration energy, and endurance ratio of the quadriceps and hamstrings at 300 deg/sec. Repeated measures analysis of variance revealed no significant difference (p > .05) in agility test scores between the three experimental conditions. Repeated measures analysis of variance also revealed no significant difference (p > .05) in the isokinetic responses of subjects as they were tested within the three experimental conditions. The investigator concluded that protective knee braces had no effect on agility, isokinetic strength, power, and endurance. / Master of Science
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The clinical effectiveness of therapeutic exercises alone and in combination with orthotic bracing in the treatment of lateral epicondylalgiaFlanders, Megan January 2012 (has links)
Dissertation submitted in partial compliance with the requirements for the
Master’s Degree in Technology: Chiropractic, Durban University of Technology, 2012. / Lateral epicondylalgia (L.E) is a common diagnosis in elbow pathology. The aetiology is poorly understood but it is generally accepted to be as a result of repetitive microtrauma, affecting the proximal end of the extensor carpi radialis brevis tendon. Elbow bracing and exercise modification are often utilised by sufferers in order to reduce symptoms. In addition, there have been multiple treatment regimes used in practice to treat L.E, but none has stood out as being more effective than another. Thus, the aim of this study was to investigate the relative clinical effectiveness of therapeutic exercises alone and in combination with orthotic bracing, in terms of subjective and objective clinical findings.
Methods
This stratified, quantitative, prospective clinical trial consisted of two equal groups (n=15) diagnosed with L.E. Group One consisted of a strengthening and stretching programme alone, and Group Two consisted of a combination of the same programme and an orthotic brace. The participants performed the programme daily at home for six weeks, and the brace was worn throughout the day for six weeks. Each participant was assessed before, during and after the programme, in terms of subjective and objective clinical data which was then statistically analysed using SPSS version 18. Repeated measures ANOVA testing was also used to compare the outcomes between the groups over the time points.
Results
Both groups showed significant statistical improvement in terms of all the outcome measures. The groups also showed a clinically significant improvement for all the outcome measures except pressure pain threshold where Group Two showed clinically significant improvement over Group One.
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Conclusion
The results show that there was negligible benefit when combining an orthotic brace with therapeutic exercises as opposed to performing the therapeutic exercises alone.
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A comparison of the protective characteristics of selected ankle bracesComer, Shawn January 1992 (has links)
The purpose of this study was to compare the protective characteristics of four different ankle braces and one form of ankle taping. An inversion and plantar flexion platform was used to induce ankle movements. The subjects used in this study consisted of 10 volunteer male students. The subjects had no sprains five months prior to testing. All subjects were tested in the same size 10 shoes, high tops and low tops. A Certified Athletic Trainer applied all ankle braces and ankle tapings. A closed basketweave with heel locks, adherent spray, and pre-wrap was used for all taping conditions.After the application of the ankle braces or taping, each subject performed two tests on the inversion and plantar flexion platform. A random order was used among the subjects. An ankle inversion platform was modified to induce 30 degrees of inversion and 35 degrees of plantar flexion simultaneously. The subjects will be filmed using a Locam 16mm at 200 frame/second. All subjects were filmed from the posterior plane with markings on the posterior aspect of the lower leg to help analyze the movement at the subtalar joint. A Calcomp 9100 series digitizer that was interfaced with a VAX computer was used to analyze the data and calculate the amount of angular displacement at the subtalar joint. An ANOVA with repeated measures was used to determine significant differences between support techniques. University procedures for the protection of human subjects was followed. ANOVA procedures indicated no significant difference in angular displacement between braces. A statistical analysis indicated that low top shoes provided significantly more support than high top shoes in braced ankles. / School of Physical Education
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