Do hip strength,flexibility and running biomechanics predict dynamic valgus in female recreational runners? |
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| Institution: | 1. Instituto Brasil de Tecnologias da Saúde, Rua Visconde de Pirajá 595, room 1201, Ipanema, 22410-003, Rio de Janeiro, Brazil;2. Programa de Engenharia Biomédica, Universidade Federal do Rio de Janeiro, Brazil;3. Programa de Pós Graduação em Radiologia Clínica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil;4. Laboratório de Biomecânica e Comportamento Motor, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil;5. Programa de Pós Graduação em Ciências da Reabilitação, Universidade Nove de Julho, São Paulo, Brazil;1. Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy;2. Dipartimento di Meccanica, Politecnico di Milano, Milano, Italy;3. Exercise Physiology and Physical Assessment Laboratory, Serra Gaúcha University Center, Caxias do Sul, Brazil;4. Integrated Colleges of Taquara (FACCAT), Taquara, Brazil;1. Michigan Performance Research Laboratory, School of Kinesiology, United States;2. Department of Family Medicine, 24 Frank Lloyd Wright Drive, Ann Arbor, MI, 48105, United States;3. Department of Orthopaedic Surgery, United States;4. Department of Biomedical Engineering, United States;5. Central Campus Recreational Building, 401 Washtenaw Avenue, Ann Arbor, MI, 48109, United States;1. School of Health and Rehabilitation, Keele University, ST5 5BG, UK;2. Institute of Science and Technology in Medicine, Keele University, ST5 5BG, UK;3. School of Health Science, University of Salford, M6 6PU, UK;4. ORLAU, RJAH Orthopaedic Hospital, Oswestry, Shropshire, SY10 7AG, UK;1. Department of Sports Physical Therapy, Gundersen Health System, 3111 Gundersen Drive, Onalaska, WI, 54650, United States;2. Endurance Sports Physical Therapy & Performance, 4940 W 35th Street, St. Louis Park, MN, 55416, United States;3. The University of Montana Physical Therapy Clinic, University of Montana, 32 Campus Drive, 129 Skaggs Building, Missoula, MT, 59812, United States;4. La Crosse Institute for Movement Science, University of Wisconsin, 1300 Badger Street, La Crosse, WI, 54601, United States;5. Health Professions Department, University of Wisconsin, 1300 Badger Street, La Crosse, WI, 54601, United States |
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| Abstract: | BackgoundDynamic valgus has been the focus of many studies to identify its association to an increased risk of running-related injuries. However, it is not known which physical and biomechanical variables are associated with this movement dysfunction. Research question: This study aimed to test the correlation between strength, flexibility and biomechanical variables and dynamic valgus in female runners.MethodsTwenty-nine healthy females ran on a treadmill at 2.92 m/s and performed strength, range of motion and endurance tests. Pelvic, hip and ankle kinematics were measured with a 3D motion analysis system. Six multiple linear regression models were used to identify the ability of physical and biomechanical variables to predict excursion and peak of contralateral pelvic drop, hip adduction and internal rotation.ResultsContralateral pelvic drop and hip adduction were positively correlated to ankle eversion and step cadence. Hip internal rotation had a negative correlation with ankle eversion. Despite significance, predictor variables explained less than 30% of dynamic valgus variance during running. No interest variable had significant correlation with the hip strength and hip and ankle passive range of motion.SignificanceThe results showed that distal joint kinematics and spatiotemporal variables should be considered during biomechanical running analysis to identify their possible relationship with joint overload caused by dynamic valgus. Caution should be taken when linking hip disorders during running to posterolateral hip strength and stiffness, core endurance, and ankle dorsiflexion range of motion since no correlation occurred amongstthese variables in this sample of female runners. |
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| Keywords: | Gait analysis Movement dysfunction Hip strength Multiple linear regression Kinematics Running |
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