Statistical modelling of knee valgus during a continuous jump test |
| |
| Authors: | Y Nagano M Sakagami H Ida M Akai T Fukubayashi |
| |
| Institution: | 1. Graduate School of Sports Science, Waseda University , Saitama, Japan yasu-nagano@moegi.waseda.jp;3. Graduate School of Sports Science, Waseda University , Saitama, Japan;4. Kanagawa Institute of Technology , Kanagawa;5. National Rehabilitation Center for Persons with Disabilities , Saitama, Japan;6. Faculty of Sports Sciences, Waseda University , Saitama, Japan |
| |
| Abstract: | Landing with the knee in a valgus position is recognized as a risk factor for anterior cruciate ligament (ACL) injury. Using linear and non-linear regression analyses, the purpose of this study was to examine the correlation between two-dimensional (2D) knee valgus and three-dimensional (3D) knee kinematics measured during a jump landing task. Twenty-eight female collegiate athletes participated. All participants were required to perform a continuous jump test. The average maximum angles of abduction and internal tibial rotation during landing were measured using the Point Cluster Technique. Average peak knee valgus angle was measured using a 2D approach. Linear and non-linear regression analyses between 2D valgus and 3D knee abduction, and between 2D valgus and 3D internal tibial rotation, were performed. The R 2 value between 2D valgus and 3D knee abduction was significantly different from zero and had a moderate correlation for all models, whereas the R 2 value between 2D valgus and 3D internal tibial rotation was not significantly different from zero. The 2D approach could be used to screen a specific group of individuals for risk of ACL injury; however, using frontal plane 2D analysis of valgus motion to evaluate internal tibial rotation is not advised. |
| |
| Keywords: | Injury kinematics knee landing motion analysis |
|
|
