Semester

Spring

Date of Graduation

2010

Document Type

Thesis

Degree Type

MS

College

College of Physical Activity and Sport Sciences

Department

Athletic Training

Committee Chair

Michelle A Sandrey

Abstract

Context. Rehabilitation for chronic ankle instability is constantly evolving in an attempt to determine the correct course to reduce the deficits associated with chronic ankle instability. Research has shown that balance training over a 4 week period was beneficial in improving self-reported function, dynamic postural control and static postural control. With results still unclear on whether balance and coordination training will increase dynamic postural control or joint position sense, dynamic balance training program may be beneficial in decreasing the deficits associated with chronic ankle instability. Objective. The present study aims to investigate the affects of a dynamic balance training program compared to traditional balance rehabilitation on dynamic postural control, joint position sense and self reported function with subjects who experience chronic ankle instability. Design. A 2x3 factorial design (time x group), time being pre-post measures and group including control, traditional rehab, and dynamic balance rehab, was used for all independent variables (FAAM, FAAM Sport, SEBT A, PM, PL, and JPS DF, PF, IV, and EV). Setting. A AAA High School in North Central West Virginia. Patients or Other Participants. Twenty-six subjects (3 female, 23 male; Age 19.65+/-2.91 yrs; Height 175.56+/-7.27cm) with a history of chronic ankle instability as determined by an instability questionnaire and orthopedic special tests volunteered for this study. Interventions. Subjects were randomly assigned to the Dynamic Balance-Training program (DBTP), Traditional Rehabilitation Program (TRP) or control group. The DBTP and TRP groups participated in two different 4wk programs 3x a week. The DBTP group performed a battery of dynamic hop to stabilization exercises 3x a week over a 4 week period. The 4-week TRP group performed a series of single leg balance exercises three times a week, with exercises being advanced throughout the 4 week period for both groups. Pre- and Post-test measurements were taken using the Foot and Ankle Ability Measures (FAAM), FAAM Sport, the SEBT in three directions, and weight bearing JPS. Main Outcomes Measures. A significant improvement in dynamic postural control and joint position sense in both groups with the DBTP group having a greater improvement. Also a significant increase in self reported function with DBTP group having a greater improvement. Results. There was a significant interaction for time by group with FAAM (F2,23=7.17, P=.003, eta2=.402, 1-beta=.918), SEBT A (F2,23=24.469, P<.001, eta2=.680, 1-beta= 1.00), SEBT PM (F2,23=19.461, P<.001, eta2=.629, 1-beta=1.00), and SEBT PL (F2,23=25.764, P. There was a significant main effect for time with FAAM (F1,23=31.99, P<.001, eta 2=.582, 1-beta=1.00), FAAM Sport (F1,23=31.85, P<.001, eta2=.581, 1-beta= 1.0), SEBT A (F1,23 =128.56, P<.001, eta2=.848, 1-beta=1.00), SEBT PM (F1,23=108.216, P<.001, eta2=.825, 1-beta=1.00), SEBT PL (F1,23=149.25, P<.001, eta2=.866, 1-beta=1.00), JPS DF (F1,23=12.85, P=.002, eta2=.358, 1-beta=.929), JPS PF F1,23=12.194, P=.002, eta2=.346, 1-beta=.917), JPS IV (F1,23=10.954, P=.003, eta2=.323, 1-beta=.887) with post test scores > pre test, except for JPS where post test scores were <. There was a significant main effect for group was FAAM Sport (F 2,23=15.65, P<.001, eta2=.576, 1-beta=.998). Conclusions. A four week dynamic or traditional balance training program can increase self reported function, dynamic postural control, and joint position sense in athletes who are experiencing chronic ankle instability.

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