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UBC Theses and Dissertations
Eccentric kinetic chain exercise as a conservative means of functionally rehabilitating chronic isolated cruciate ligament insuffiency MacLean, Christopher Lawrence
Abstract
Chronic, isolated posterior cruciate ligament (PCL) insufficiency can present several complications including patellofemoral pain, difficulty with stair descent and sudden changes in direction. The purpose of the present study was to develop a home, eccentric kinetic chain exercise program that improves strength, function and symptomatology. Thirteen, isolated posterior cruciate ligament (PCL) injured subjects and thirteen, healthy sedentary individuals were included in the study. The PCL group underwent 12 weeks of prescribed eccentric squat exercise. The healthy, sedentary group did not undergo exercise intervention. Both groups executed: the Tegner Hop Test, Lysholm Knee Scale Score and Kinetic Communicator isokinetic testing. All tests were administered at 0, 6, and 12-weeks of the investigation. Four relationships were explored to analyze the effectiveness of the "eccentric rehabilitation program and to define significant differences (p<0.05) between healthy and PCL-injured subjects. Subject X Treatment data analysis clearly indicated that there were significant increases in eccentric quadricep and hamstring torque over the twelve week period. Tegner Hop Test and Lysholm Knee Scale scores also increased significantly following the eccentric squat program. Quadricep, eccentric/concentric ratios (@ 60 & 120 degrees per second) increased significantly after twelve weeks of rehabilitation. Significant strength differences did not exist between either extremity in the PCL group at any time throughout the course of this study. Prior to rehabilitation, there were no significant differences between eccentric and concentric torque values in the quadriceps, or hamstrings, of the PCL-injured group. Following the eccentric squat program, the injured extremity, quadriceps did exhibit a significantly greater eccentric torque than concentric torque. The PCL group was significantly weaker than the control group in quadriceps, eccentric torque (@60 & 120 degrees per second), at week 0. The 12-week program resulted in there being no significant differences between PCL and control groups in eccentric, quadriceps torque. The results of this investigation strongly support the eccentric squat program as a viable means of functionally rehabilitating chronic PCL-insufficiency with eccentric kinetic chain exercise.
Item Metadata
Title |
Eccentric kinetic chain exercise as a conservative means of functionally rehabilitating chronic isolated cruciate ligament insuffiency
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1995
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Description |
Chronic, isolated posterior cruciate ligament (PCL) insufficiency can present several
complications including patellofemoral pain, difficulty with stair descent and sudden
changes in direction. The purpose of the present study was to develop a home,
eccentric kinetic chain exercise program that improves strength, function and
symptomatology.
Thirteen, isolated posterior cruciate ligament (PCL) injured subjects and thirteen,
healthy sedentary individuals were included in the study. The PCL group underwent
12 weeks of prescribed eccentric squat exercise. The healthy, sedentary group did not
undergo exercise intervention. Both groups executed: the Tegner Hop Test, Lysholm
Knee Scale Score and Kinetic Communicator isokinetic testing. All tests were
administered at 0, 6, and 12-weeks of the investigation. Four relationships were
explored to analyze the effectiveness of the "eccentric rehabilitation program and to
define significant differences (p<0.05) between healthy and PCL-injured subjects.
Subject X Treatment data analysis clearly indicated that there were significant increases
in eccentric quadricep and hamstring torque over the twelve week period. Tegner Hop
Test and Lysholm Knee Scale scores also increased significantly following the eccentric
squat program. Quadricep, eccentric/concentric ratios (@ 60 & 120 degrees per
second) increased significantly after twelve weeks of rehabilitation. Significant strength
differences did not exist between either extremity in the PCL group at any time
throughout the course of this study.
Prior to rehabilitation, there were no significant differences between eccentric and
concentric torque values in the quadriceps, or hamstrings, of the PCL-injured group. Following the eccentric squat program, the injured extremity, quadriceps did exhibit a
significantly greater eccentric torque than concentric torque.
The PCL group was significantly weaker than the control group in quadriceps,
eccentric torque (@60 & 120 degrees per second), at week 0. The 12-week program
resulted in there being no significant differences between PCL and control groups in
eccentric, quadriceps torque.
The results of this investigation strongly support the eccentric squat program as a viable
means of functionally rehabilitating chronic PCL-insufficiency with eccentric kinetic
chain exercise.
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Extent |
6404043 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-01-27
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0077244
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1995-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.