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An Innovative Approach to Reduce ACL Injury Risk: A Four-Week Real-time Feedback Intervention

Ericksen, Hayley Michele
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1393339137

Abstract Details

2014, Doctor of Philosophy, University of Toledo, College of Health Sciences.
ACL injuries are common, affecting females up to six times more often than males. Females have been found to exhibit detrimental lower extremity biomechanics during landing, potentially increasing their ACL injury risk. Feedback has demonstrated promising results in improving landing biomechanics; however the modality has yet to be optimized. The objective of this study was to determine the effectiveness of a four-week, real-time feedback intervention on improving lower extremity biomechanics during a jump landing task and a cutting task. The central hypothesis was that real-time feedback will create sustainable changes in lower extremity biomechanics and was tested using two specific aims: to determine the effect of a four week real-time feedback intervention on 1) knee and hip kinematics and 2) knee and hip kinetics in healthy females during a jump landing and a cutting task. These aims were accomplished by testing traditional and real-time feedback groups and a non-feedback group at baseline, after the 4-week feedback intervention and following a 1-week no feedback retention period with motion-analysis biomechanics. To compare baseline to the 4-week posttest time point, separate 3x2 analysis of variance with repeated measures on time were run to evaluate the rebound and cutting tasks. Post hoc one-way analysis of variance with Fisher's Least Significant Difference were used to determine group differences at pre-and post-test time points. To evaluate retention comparing the 4-week posttest time point to the 5-week posttest time point, separate 2x2 analysis of variance with repeated measures on time were run to evaluate the rebound and cutting tasks. Post hoc t-tests were used to evaluate differences between groups. Following the 4-week feedback intervention, the results demonstrated statistically significant interactions for sagittal plane biomechanics and peak vertical ground reaction force for both intervention groups for the jump landing task. Following the one-week no feedback retention, the RTF group demonstrated a significant interaction for knee flexion and hip adduction. There were no interaction effects for the cutting task, following the 4-week intervention or one-week retention. In conclusion, there were no differences between RTF and TF in changing landing biomechanics following a 4-week intervention and a 1-week retention period. Both interventions appeared to make mostly sagittal plane changes and, overall, those changes were able to be maintained at the 1-week retention follow up. Future investigations should aim to optimize feedback by potentially combining it with other interventions and investigating its ability to make changes in biomechanics in varying populations.
Abbey Thomas (Committee Chair)
Brian Pietrosimone (Committee Member)
Phillip Gribble (Committee Member)
Charles Armstrong (Committee Member)
Martin Rice (Committee Member)
Kinesiology

Recommended Citations

Citations

  • Ericksen, H. M. (2014). An Innovative Approach to Reduce ACL Injury Risk: A Four-Week Real-time Feedback Intervention [Doctoral dissertation, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1393339137

    APA Style (7th edition)

  • Ericksen, Hayley. An Innovative Approach to Reduce ACL Injury Risk: A Four-Week Real-time Feedback Intervention. 2014. University of Toledo, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1393339137.

    MLA Style (8th edition)

  • Ericksen, Hayley. "An Innovative Approach to Reduce ACL Injury Risk: A Four-Week Real-time Feedback Intervention." Doctoral dissertation, University of Toledo, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1393339137

    Chicago Manual of Style (17th edition)

toledo1393339137
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This open access ETD is published by University of Toledo and OhioLINK.