The immediate effect of foot orthoses on gluteal and lower limb muscle activity during overground walking in healthy young adults |
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| Affiliation: | 1. School of Allied Health, La Trobe University, Victoria, Australia;2. School of Health and Rehabilitation Sciences, The University of Queensland, Queensland, Australia;3. Allied Health, Northern Health, Victoria, Australia;4. Department of Nursing and Allied Health (Physiotherapy), Swinburne University of Technology, Victoria, Australia;5. La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Victoria, Australia;1. The University of Queensland, School of Health & Rehabilitation Sciences, Brisbane, QLD, 4072, Australia;2. La Trobe Sport and Exercise Medicine Research Centre (LASEM), College of Science, Health and Engineering, School of Allied Health, La Trobe University, Melbourne, Victoria, Australia;1. Center of Advanced Technologies in Rehabilitation, Sheba Medical Center, Tel Hashomer, Israel;2. Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel;3. Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel;1. Department of Pharmacy and Biomedical Sciences, College of Science, Health and Engineering, La Trobe University, Victoria, Australia;2. Sport, Exercise and Rehabilitation Research Focus Area, La Trobe University, Victoria, Australia;3. La Trobe University Sports and Exercise Medicine Research Centre, Victoria, Australia;4. Fusion Physiotherapy, Bendigo, Victoria, Australia;5. Bendigo Health Care Group, Bendigo, Victoria, Australia;1. Department of Pharmacy & Biomedical Sciences, La Trobe University, Bendigo, Australia;2. Sport, Exercise & Rehabilitation Research Focus Area, La Trobe University, Australia;3. School of Allied Health, La Trobe University, Melbourne, Australia;4. Department of Engineering, La Trobe University, Melbourne, Australia;1. Discipline of Podiatry, University of Newcastle, Ourimbah, NSW, 2258, Australia;2. Priority Research Centre for Physical Activity and Nutrition, University of Newcastle, Newcastle, NSW, 2308, Australia;1. La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia;2. Department of Physical Therapy, Faculty of Health Sciences, Collaborative Training Program in Musculoskeletal Health Research, and Bone and Joint Institute, The University of Western Ontario, London, Ontario, Canada;3. Centre for Sports Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia;4. Department of Mechanical Engineering, The University of Melbourne, Parkville, Victoria, Australia;5. School of Health & Rehabilitation Sciences, The University of Queensland, Brisbane, Queensland, Australia |
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| Abstract: | BackgroundAlthough foot orthoses are often used in the management of lower limb musculoskeletal conditions, their effects on muscle activation is unclear, especially in more proximal segments of the lower limb.Research questionPrimary aim: Is there an immediate effect of foot orthoses on gluteal muscle activity during overground walking in healthy young adults? Secondary aim: Is there an immediate effect of foot orthoses on the activity of hamstring, quadriceps and calf muscles?MethodsIn eighteen healthy young adults, muscle activity was recorded using fine wire electrodes for gluteus minimus (GMin; anterior, posterior) and gluteus medius (GMed; anterior, middle, posterior); and surface electrodes for gluteus maximus (GMax), hamstring, quadriceps and calf muscles. Participants completed six walking trials for two conditions; shoe and shoe with prefabricated foot orthoses. Muscle activity was normalised to the peak activity of the shoe condition and analysed using one-dimensional statistical non-parametric mapping to identify differences across the gait cycle.ResultsActivity of GMed (anterior, middle, posterior) and GMin (posterior) was reduced in early stance phase when the orthosis was worn in the shoe (p < 0.05). GMin (anterior) activity was significantly reduced during swing (p < 0.05). Muscle activity was also significantly reduced during the orthoses condition for the lateral hamstrings and calf muscles (p < 0.05).SignificanceUsing foot orthoses may provide a strategy to reduce demand on GMin, GMed, lateral hamstring and calf muscles while walking. |
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| Keywords: | Hip Orthotic Walking Electromyography Buttocks |
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