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An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
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The relationship between single-limb squat and jump-cut kinematics.
Samantha E Scarneo-Miller1, Jarrett E Sorge2, Eleanor M Beltz3
1Department of Kinesiology, Korey Stringer Institute, University of Connecticut, Storrs, CT, USA.
Sports Biomechanics
|November 12, 2019
Summary
The single-limb squat (SLS) may predict jump-cut (JC) performance in athletes after anterior cruciate ligament reconstruction (ACLR). Deficits in SLS control correlate with poorer JC biomechanics, aiding rehabilitation progression.
Area of Science:
- Biomechanics
- Orthopedics
- Sports Medicine
Background:
- Objective criteria are lacking for advancing athletes post-anterior cruciate ligament reconstruction (ACLR) to cutting maneuvers.
- Assessing functional movement patterns is crucial for safe return to sport.
Purpose of the Study:
- To investigate the relationship between the single-limb squat (SLS) and jump-cut (JC) tasks in individuals with and without ACLR.
- To identify potential biomechanical predictors for return-to-sport readiness.
Main Methods:
- A case-control laboratory study compared 23 participants with ACLR to 23 healthy controls.
- Bilateral kinematic data were collected during SLS and JC tasks.
- Correlations and independent sample t-tests analyzed kinematic data between tasks and groups.
Main Results:
- Peak trunk rotation and medial knee displacement during JC were strongly correlated with SLS performance (r² = 0.63).
- The ACLR group exhibited less sagittal plane motion during both SLS and JC compared to controls.
- Reduced frontal and transverse plane control during SLS was associated with increased lateral trunk flexion, hip adduction, and medial knee displacement during JC.
Conclusions:
- The single-limb squat (SLS) demonstrates potential as a clinical predictor for jump-cut (JC) task performance in ACLR rehabilitation.
- Biomechanical deficits in the SLS may translate to increased injury risk during cutting maneuvers.
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