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J Sport Rehabil. 2019 Jan 30:1-9. doi: 10.1123/jsr.2017-0391. [Epub ahead of print]

Injury Risk Factors Integrated Into Self-Guided Real-Time Biofeedback Improves High-Risk Biomechanics.

Abstract

CONTEXT:

Existing anterior cruciate ligament (ACL) injury prevention programs have failed to reverse the high rate of ACL injuries in adolescent female athletes.

OBJECTIVE:

This investigation attempts to overcome factors that limit efficacy with existing injury prevention programs through the use of a novel, objective, and real-time interactive visual feedback system designed to reduce the biomechanical risk factors associated with ACL injuries.

DESIGN:

Cross-over study.

SETTING:

Medical center laboratory.

PARTICIPANTS:

A total of 20 females (age = 19.7 [1.34] y; height = 1.74 [0.09] m; weight = 72.16 [12.45] kg) participated in this study.

METHODS:

Participants performed sets of 10 bodyweight squats in each of 8 training blocks (ie, 4 real-time and 4 control blocks) and 3 testing blocks for a total of 110 squats. Feedback conditions were blocked and counterbalanced with half of participants randomly assigned to receive the real-time feedback block first and half receiving the control (sham) feedback first.

RESULTS:

Heat map analysis revealed that during interaction with the real-time feedback, squat performance measured in terms of key biomechanical parameters was improved compared with performance when participants squatted with the sham stimulus.

CONCLUSIONS:

This study demonstrates that the interactive feedback system guided participants to significantly improve movement biomechanics during performance of a body weight squat, which is a fundamental exercise for a longer term ACL injury risk reduction intervention. A longer training and testing period is necessary to investigate the efficacy of this feedback approach to effect long-term adaptations in the biomechanical risk profile of athletes.

KEYWORDS:

ACL injury; injury prevention; neuromuscular training; real-time feedback

PMID:
29952696
PMCID:
PMC6667313
[Available on 2020-07-30]
DOI:
10.1123/jsr.2017-0391

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