The effect of videotape augmented feedback on drop jump landing strategy: Implications for anterior cruciate ligament and patellofemoral joint injury prevention |
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| Institution: | 1. University of Bradford, United Kingdom;2. University of Salford, United Kingdom;1. Department of Radiology and Biomedical Imaging, UCSF, United States;2. Department of Physical Therapy and Rehabilitation Science, United States;3. Department of Orthopaedic Surgery, UCSF, United States;1. Department of sport biomechanics and corrective exercises, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran;2. Department of Health and Sport Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran;3. Department of Tehran Physical Therapy, Faculty of Physical Therapy, Medical University of Tehran, Tehran, Iran;1. KU Leuven Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Belgium, Tervuursevest 101 b1501, 3001 Leuven, Belgium;2. Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, UK, Tom Reilly Building, Byrom Street Campus, Liverpool L3 3AF, UK;1. KU Leuven Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101 b1501, 3001 Heverlee, Belgium;2. Division of Orthopedics and Traumatology, Department of Development and Regeneration, University Hospitals Leuven, Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium;3. Physical Medicine and Rehabilitation, University Hospitals Leuven, Campus Pellenberg, Weligerveld 1, 3212 Pellenberg, Belgium |
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| Abstract: | BackgroundModification of high-risk movement strategies such as dynamic knee valgus is key to the reduction of anterior cruciate ligament (ACL) and patellofemoral joint (PFJ) injuries. Augmented feedback, which includes video and verbal feedback, could offer a quick, simple and effective alternative to training programs for altering high-risk movement patterns. It is not clear whether feedback can reduce dynamic knee valgus measured using frontal plane projection angle (FPPA).MethodsVertical ground reaction force (vGRF), two-dimensional FPPA of the knee, contact time and jump height of 20 recreationally active university students were measured during a drop jump task pre- and post- an augmented feedback intervention. A control group of eight recreationally active university students were also studied at baseline and repeat test.ResultsThere was a significant reduction in vGRF (p = 0.033), FPPA (p < 0.001) and jump height (p < 0.001) and an increase in contact time (p < 0.001) post feedback in the intervention group. No changes were evident in the control group.ConclusionAugmented feedback leads to significant decreases in vGRF, FPPA and contact time which may help to reduce ACL and PFJ injury risk. However, these changes may result in decreased performance.Clinical relevanceAugmented feedback reduces dynamic knee valgus, as measured via FPPA, and forces experienced during the drop jump task and therefore could be used as a tool for helping decrease ACL and PFJ injury risk prior to, or as part of, the implementation of injury prevention training programs. |
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