@article{ref1,
title="Biomechanical effects of a 6-week change-of-direction technique modification intervention on anterior cruciate ligament injury risk",
journal="Journal of strength and conditioning research",
year="2021",
author="Dos'Santos, Thomas and Thomas, Christopher and Comfort, Paul and Jones, Paul A.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="The aim of this study was to evaluate the biomechanical effects of a 6-week change-of-direction (COD) technique modification intervention on anterior cruciate ligament (ACL) injury risk (i.e., multiplanar knee joint loads) during 45° (CUT45) and 90° (CUT90) side-step cutting. A nonrandomized, controlled 6-week intervention study was administrated. Fifteen male multidirectional sport athletes formed the intervention group (IG) who participated in two 30-minute COD technique modification sessions per week, whereas 12 male multidirectional sport athletes formed the control group and continued their normal training. Subjects performed 6 trials of the CUT45 and CUT90 task whereby pre-to-post intervention changes in lower-limb and trunk kinetics and kinematics were evaluated using three-dimensional motion and ground reaction force analysis. Two-way mixed analyses of variance revealed no significant interaction effects of group for CUT45 and CUT90 multiplanar knee joint loads (p ≥ 0.116, η2 ≤ 0.096); however, considerable individual variation was observed (positive (n = 5-8) and negative responders (n = 7-8)). Based on IG group means, COD technique modification resulted in no meaningful reductions in multiplanar knee joint loads. However, individually, considerable variation was observed, with &quot;higher-risk&quot; subjects generally responding positively, and subjects initially considered &quot;low-risk&quot; tending to increase their multiplanar knee joint loads, albeit to magnitudes not considered hazardous or &quot;high-risk.&quot; Change-of-direction technique modification training is a simple, effective training method, requiring minimal equipment that can reduce knee joint loads and potential ACL injury risk in &quot;higher-risk&quot; subjects without compromising performance.<p /> <p>Language: en</p>",
language="en",
issn="1064-8011",
doi="10.1519/JSC.0000000000004075",
url="http://dx.doi.org/10.1519/JSC.0000000000004075"
}