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Lower Extremity Energy Absorption Strategies at Different Phases During Single and Double-Leg Landings With Knee Valgus in Pubertal Female Athletes Publisher Pubmed



Dadfar M1, 2 ; Soltani M2, 3, 4, 5, 6 ; Novinzad MB2 ; Raahemifar K7, 8
Authors
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Authors Affiliations
  1. 1. Department of Corrective Exercise and Sports Injuries, Faculty of Physical Education and Sport Sciences, Allameh Tabataba’i University, Tehran, Iran
  2. 2. Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran
  3. 3. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada
  4. 4. Center for Biotechnology and Bioengineering (CBB), University of Waterloo, Waterloo, ON, Canada
  5. 5. Advanced Bioengineering Initiative Center, Computational Medicine Center, K. N. Toosi University of Technology, Tehran, Iran
  6. 6. Cancer Biology Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. College of Information Sciences and Technology (IST), Data Science and Artificial Intelligence Program, Penn State University, State College, Pennsylvania, 16801, PA, United States
  8. 8. School of Optometry and Vision Science, Faculty of Science, Department of Chemical Engineering, Faculty of Engineering, University of Waterloo, 200 University Ave W, Waterloo, N2L 3G1, ON, Canada

Source: Scientific Reports Published:2021


Abstract

Dynamic knee valgus (DKV) malalignment affects the biomechanical characteristic during sports activities. This cross-sectional study was conducted to evaluate mechanical energy absorption (MEA) strategies at initial contact (IC) and total landing (TL) phases during single-leg landing (SLL), and double-leg landing (DLL). Twenty-eight female athletes with DKV (age 10–14) were invited. MEA analysis of lower extremity joints was done in sagittal and frontal motion planes employing 8 Vicon motion capture cameras and 2 Kistler force plates. Statistical analysis was done using IBM Statistics (version24) by Bivariate Pearson Correlation Coefficient test. Knee extensors MEA during SLL (IC: P = 0.008, R = 0.522/TL: P < 0.001, R = 0.642) and DLL (IC: P < 0.001, R = 0.611/TL: P = 0.011, R = 0.525), and knee abductors during SLL (IC: P = 0.021, R = 0.474) were positively correlated with increased DKV angle. Ankle plantar flexors during SLL (TL: P = 0.017, R = − 0.477) and DLL (TL: P = 0.028, R = − 0.404), and hip extensors during SLL (TL: P = 0.006, R = − 0.5120) were negatively correlated with increased DKV angle. Compensated MEA in knee extensors was correlated with less ankle plantar flexion MEA during SLL (IC: P = 0.027, R = − 0.514/TL: P = 0.007, R = − 0.637) and DLL (IC: P = 0.033, R = − 00.412/TL: P = 0.025, R = − 0.485). These outcomes indicated a knee-reliant MEA strategy in female athletes with DKV during puberty, putting them at higher risks of ACL injuries during landing. © 2021, The Author(s).
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