Individuals with chronic ankle instability exhibit altered ankle kinematics and neuromuscular control compared to copers during inversion single-leg landing |
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| Affiliation: | 1. KU Leuven Movement Control and Neuroplasticity Research Group, Leuven, Belgium;2. KU Leuven Human Movement Biomechanics Research Group, Leuven, Belgium;3. KU Leuven Research Group for Musculoskeletal Rehabilitation, Faculty of Kinesiology and Rehabilitation Sciences, Group Biomedical Sciences, 3001 Leuven, Belgium;4. Department of Research, Development & Education, Sint Maartenskliniek, Nijmegen, The Netherlands;1. Department of Physical Therapy – Program in Exercise & Rehabilitation Science, Marquette University, Cramer Hall 004B, 604 N. 16th St. 004B, Milwaukee, WI, 53233, USA;2. School of Kinesiology, University of Michigan, CCRB 4745G, 401 Washtenaw Ave., Ann Arbor, MI, 48109-2214, USA;3. Orthopaedic and Rehabilitation Biomechanics Laboratory, University of Michigan, CCRB 4745G, 401 Washtenaw Ave., Ann Arbor, MI, 48109-2214, USA;4. Department of Physical Therapy – Program in Exercise & Rehabilitation Science, Marquette University, Cramer Hall 215D, 604 N. 16th St. 215D, Milwaukee, WI, 53233, USA;1. Physiotherapist, student from UFTM/UFU''s, Master''s Degree Program in Physiotherapy at the Federal University of Uberlândia- UFU, Uberlândia, Minas Gerais, Brazil;2. Biomedical Engineering Center of the Federal University of Uberlândia-UFU, Uberlândia, Minas Gerais, Brazil;3. Undergraduate Course in Physiotherapy, Federal University of Uberlândia- UFU, Uberlândia, Minas Gerais, Brazil;4. Department of Orthopedics and Traumatology, Faculty of Medical Sciences, State University of Campinas - UNICAMP, Campinas, São Paulo, Brazil;5. Post Graduate Program in Physiotherapy, UFTM / UFU at the Federal University of Uberlândia - UFU, Uberlândia, Minas Gerais, Brazil;1. Faculty of Health Sciences, Hokkaido University, Sapporo, Japan;2. Rehabilitation Center, NTT Medical Center Sapporo, Sapporo, Japan;3. Faculty of Health Science, Hokkaido Chitose College of Rehabilitation, Chitose, Japan;1. Sports Medicine Research Institute, Department of Athletic Training & Clinical Nutrition, University of Kentucky, United States;2. MOTION Science Institute, Department of Exercise & Sport Science, University of North Carolina at Chapel Hill, United States;3. Department of Health, Athletic Training, Recreation & Kinesiology, Longwood University, United States |
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| Abstract: | ObjectivesThis study compares the ankle kinematics and muscle activities of the individuals with chronic ankle instability (CAI), coper, and control groups in normal and inversion single-leg landings.Designcross-sectional study;SettingBiomechanics laboratory.ParticipantsPhysically active adults with CAI (N = 12); and coper (N = 12) and control (N = 12) groups.Main outcome measuresThe participants performed normal and inversion single-leg landing. The muscle activity 200 ms before and after landing of the tibialis anterior, the medial gastrocnemius, and the fibularis longus (FL) were recorded. The FL latency, sagittal and frontal co-contraction indexes (CCI), ankle inversion angle at the initial contact, and the maximum inversion angle were recorded.ResultsSignificantly longer FL latency, decreased FL muscle activity, frontal CCI, and an increased maximum inversion angle at post-landing were discovered during inversion single-leg landing in the CAI group compared to the coper and control groups. However, no significant difference was observed among the CAI and coper groups during normal single-leg landing.ConclusionThese results suggest prolonged FL latency and altered ankle kinematics suggest an increased risk of recurrent lateral ankle sprains in CAI with inversion single-leg landing. |
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| Keywords: | Lateral ankle sprain Chronic ankle instability Ankle stability Single-leg landing |
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