The Effects of an Integrated Exercise Program on Lower Extremity Biomechanics in Females with Medial Knee Displacement

Public Deposited
Analytics

Downloadable Content

Download PDF
Request Version for Screen Reader
Last Modified
  • March 19, 2019
Creator
  • Goto, Shiho
    • Affiliation: College of Arts and Sciences, Department of Exercise and Sport Science
Abstract
  • Knee injury prevention exercise programs are aimed to correct knee valgus alignment during functional activities. Various factors are associated with knee valgus, including altered flexibility, muscle strength, and neuromuscular factors. However, the exercise programs that were used in previous studies did not consider these factors, which may have resulted in inconsistent finding. In addition, although lower extremity bony alignment has been associated with faulty movement patterns, little is known whether the bony alignment abnormalities influence individual's response to the exercise program. Lastly, effectiveness of exercise program was tested within the tasks that were part of the exercise program; therefore, it is unclear if improvement in the trained task transfers to untrained task. The purpose of this investigation was to examine the effects of an integrated exercise program on lower extremity biomechanics while accounting for bony alignment measures in females displaying high risk movement pattern. Thirty-two active females completed the study and randomly assigned to either the integrated exercise program group (INT=17, Age=21.0±3.1 yrs, Ht=161.1±5.0 cm, Mass=63.6±8.4 Kg) or the control group (CON=15, Age=20.8±3.0, Ht=162.3 ± 7.8 cm, Mass = 64.9± 18.9 Kg). The participants in the INT group went on a 6-week exercise training. Lower extremity joint range of motion, muscle strength, and hip, knee, and ankle kinetics and moment during the double-leg squat, single-leg squat, jump-landing, and running were assessed before and post-training. The frontal plane knee kinematics was improved during the single-leg squat, jump-landing, and running tasks following the intervention (p<0.05). These improvements were influenced by combined effects of bony alignments as greater femoral antetorsion, external tibial rotation while the magnitude of change was small. Peak knee valgus moment was also improved during the jump-landing task (p<0.05). The results indicate that the exercise program utilized in this study is effective in improving frontal plane knee kinematics in females present with knee valgus during the jump-landing, single-leg squat, and running tasks while no improvements were observed during the double-leg squat. This study also demonstrated motor learning transfer as frontal plane knee kinematics during running improved while this task was not a part of the exercise program during intervention.
Date of publication
Keyword
Subject
DOI
Identifier
Resource type
Rights statement
  • In Copyright
Advisor
  • Blackburn, J. Troy
  • Padua, Darin A.
  • Gross, Michael T.
  • Berkoff, David
  • Boling, Michelle
Degree
  • Doctor of Philosophy
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2015
Language
Publisher
Place of publication
  • Chapel Hill, NC
Access right
  • There are no restrictions to this item.
Date uploaded
  • June 23, 2015

Relations

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details Goto_unc_0153D_15132.pdf 2019-04-12 Public Download