The effect of different unstable footwear constructions on centre of pressure motion during standing |
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| Institution: | 1. Centre for Sport and Exercise Sciences, School of Biological Sciences, University of Essex, Essex, UK;2. Department of Life Sciences, University of Roehampton, London, UK;1. The Nick Davey Laboratory, Human Performance Group, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Charing Cross Hospital, London W6 8RF, UK;2. Division of Health and Social Care Research, School of Medicine, King''s College London, SE1 1UL, UK;1. School of Public Health, Physiotherapy and Population Science, University College Dublin, Dublin, Ireland;2. Institute for Sport and Health, University College Dublin, Dublin, Ireland;3. Sport and Exercise Sciences Research Institute, Ulster Sports Academy, University of Ulster, Newtownabbey, Co. Antrim, Northern Ireland, United Kingdom;4. Department of Kinesiology, University of Virginia, Charlottesville, VA, United States;5. St. Vincent''s University Hospital, Dublin, Ireland;1. Research Group for Neuromotor Rehabilitation, Department of Rehabilitation Sciences, Biomedical Sciences Group, KU Leuven, Belgium;2. Human Movement Biomechanics Research Group, Department of Kinesiology, Biomedical Sciences Group, KU Leuven, Belgium;3. MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University Amsterdam, Amsterdam, The Netherlands;4. King Abdulaziz University, Jeddah, Saudi Arabia;5. Department of Orthopedics, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, PR China |
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| Abstract: | BackgroundThe aim of this study was to test the effect different unstable footwear constructions have on centre of pressure motion when standing.MethodsSixteen young female volunteers were tested in five conditions, three unstable footwear (Reebok Easy-Tone?, FitFlop? and Skechers Shape-Ups?), a standard shoe and barefoot in a randomised order. Double and single leg balance on a force plate was assessed via centre of pressure excursions and displacements in each condition.ResultsFor double leg and single leg standing centre of pressure excursions in the anterior–posterior direction were significantly increased wearing Skechers Shape-Ups? compared to barefoot and the standard shoe. For the Reebok Easy Tone? during single leg standing excursions in the anterior–posterior direction were significantly greater compared to the barefoot condition. Cumulative displacement of the centre of pressure in medial-lateral direction increased significantly during single leg standing when wearing Skechers Shape-Ups? compared to barefoot and standard shoe as well as for Reebok Easy Tone? vs. barefoot.DiscussionIt would appear from these quiet standing results that the manner of the construction of instability shoes effects the CoP movement which is associated with induced instability. Greater CoP excursion occurred in the A–P direction while the cumulative displacements were greater in the M–L direction for those shoes with the rounded sole and soft foam and those with airpods. The shoe construction with altered density foam did not induce any change in the CoP movement, during quite standing, which tends to suggest that it is not effective at inducing balance. Not all instability shoes are effective in altering the overall instability of the wearer. |
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| Keywords: | Balance Posture Shoes Instability |
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