@article{ref1,
title="Sport-dependent variations in arm position during single-limb landing influence knee loading: implications for anterior cruciate ligament injury",
journal="American journal of sports medicine",
year="2005",
author="Chaudhari, Ajit M. and Hearn, Brenna K. and Andriacchi, Thomas P.",
volume="33",
number="6",
pages="824-830",
abstract="BACKGROUND: Increased valgus loading at the knee has been previously identified as a possible risk factor for noncontact anterior cruciate ligament injuries, which are common in sports. Arm position variation may affect risk of injury by altering valgus knee loading. HYPOTHESIS: Sport-dependent variations in arm position increase valgus loading of the knee during run-to-cut maneuvers. STUDY DESIGN: Controlled laboratory study. <br><br>METHODS: Eleven subjects performed a sidestep cutting maneuver, first with no arm constraints and then with 3 sports-related arm positions in random order (holding a lacrosse stick, holding a football on the plant side, and holding a football on the cut side). The analysis focused on the knee valgus moment relative to the arm positions during the landing phase of the activity. <br><br>RESULTS: Arm position significantly influenced the valgus moment with an increase in the lacrosse trials and in the plant-side football trials but not in the cut-side football trials (alpha =.05). <br><br>CONCLUSIONS: Constraining the plant-side arm results in increased valgus loading at the knee during run-to-cut maneuvers, which suggests the possibility of greater risk of anterior cruciate ligament injury during these conditions. CLINICAL RELEVANCE: These results suggest that training methods that consider arm position as a risk factor could help reduce the risk of anterior cruciate ligament noncontact injury.  Keywords: American football; Lacrosse   <p /> <p>Language: en</p>",
language="en",
issn="0363-5465",
doi="10.1177/0363546504270455",
url="http://dx.doi.org/10.1177/0363546504270455"
}