Transient characteristics of body sway during single-leg stance in athletes with a history of ankle sprain |
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| Institution: | 1. University of Primorska, Faculty of Health Sciences, Polje 42, SI-6310, Izola, Slovenia;2. University of Primorska, Andrej Maru?i? Institute, Muzejski trg 2, SI-6000, Koper, Slovenia;3. University of Ni?, Faculty of Sport and Physical Education, ?arnojevi?eva 10a, 18000, Ni?, Serbia;4. InnoRenew CoE, Human Health Department, Livade 6, SI-6310, Izola, Slovenia;5. S2P, Science to Practice, Ltd., Laboratory for Motor Control and Motor Behavior, Tehnolo?ki Park 19, SI-1000, Ljubljana, Slovenia;1. Department of Anatomy, University of Nigeria, Enugu Campus, Enugu, Enugu State, Nigeria;2. Department of Physiotherapy, Enugu State University Teaching Hospital Park Lane, Enugu, Enugu State, Nigeria;1. Department of Brain Sciences, Imperial College London, W6 8RF London, UK;2. Faculty of Science and Engineering, School of Medicine & Clinical Practice, University of Wolverhampton, Wolverhampton, WV1 1LY, UK;3. Department of Health Sciences, Lund University, S-221 85 Lund, Sweden;4. Memory Clinic, Skåne University Hospital, S-212 24 Malmö, Sweden;5. Clinical Memory Research Unit, Faculty of Medicine, Lund University, S-221 85 Lund, Sweden;6. Department of Neurosurgery, Lund University, S-221 85 Lund, Sweden;7. Department of Clinical Sciences, Lund University, S-221 85 Lund, Sweden;8. Department of Automatic Control, Lund University, S-221 00 Lund, Sweden;1. Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil;2. Biomedical Engineering, Federal University of ABC, São Bernardo do Campo, São Paulo, Brazil;3. Exercise Neuroscience Research Group, School of Arts, Sciences, and Humanities, University of São Paulo, São Paulo, Brazil;4. Laboratory of Integrative Motor Behaviour, Centre for Neuroscience Studies, Queen’s University, Ontario, Canada;1. Department of Biomedical Engineering, University of Melbourne, Parkville, VIC 3010, Australia;2. Melbourne School of Psychological Sciences, University of Melbourne, Parkville, VIC 3010, Australia;1. Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, USA;2. Neurology, University of Utah, Salt Lake City, UT, USA;3. Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA |
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| Abstract: | BackgroundThe role of the measurements of postural stability in the context of screening for ankle sprain risk is still equivocal. Transient characteristics of body sway have been suggested as an alternative or an improvement to traditional whole-trial analyses.Research questionAre transient characteristics of body sway sensitive to the history of ankle sprain?.MethodsThe assessment of 30-s single-leg body sway was performed on a group of 93 athletes from basketball, soccer, tennis and running who reported at least 1 ankle sprain in the last 12 months, while a group of 244 athletes from the same disciplines served as a control group without an ankle sprain reported for the same time period. We considered the mean center-of-pressure (CoP) velocity, CoP amplitude and CoP frequency. In addition to traditional whole-trial variables, we calculated the relative differences between the 1 st and the 2nd (DIF_21) and 1 st and 3rd (DIF_31) 10-s time intervals within the whole trial.ResultsThe indexes of transient characteristics of body sway (i.e., the DIF_21 and DIF_31) were in trivial or weak correlations with whole-trial variables (all r ≤ 0.29). Athletes with ankle sprain history exhibited smaller CoP ML velocity (p = 0.002) and larger CoP ML frequency (p = 0.001). In the injured group, the injured leg exhibited lower total and medial-lateral (ML) CoP velocity (p = 0.005?0.040), as well as lower CoP ML amplitude (p = 0.002) and higher CoP ML frequency (p = 0.010). The transient characteristics of body sway (DIF_21 and DIF_31) were very similar between the groups and between the injured and uninjured legs.SignificanceTransient characteristics of body sway do not appear to differentiate the athletes with and without a history of ankle sprain. Further research is needed to confirm if the transient characteristics of body sway could be used for detection of risk of falls in older adults or assessment of athletic performance. |
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| Keywords: | Postural sway Single leg stance Base of support Ankle injury Injury risk |
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