Comparing walking biomechanics of older females in maximal,minimal, and traditional shoes |
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| Institution: | 1. Program in Physical Therapy, Oregon State University - Cascades, Bend, Oregon, USA;2. School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon, USA;1. East Carolina University, Greenville, NC 27858, USA;2. Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS 90619-900, Brazil;1. College of Public Health and Human Sciences, Program in Kinesiology, Oregon State University-Cascades, Bend, OR, USA;2. Department of Human Physiology, University of Oregon, Eugene, OR, USA;3. Department of Physical Education, National Tsing Hua University, Hsinchu, Taiwan, ROC;1. Discipline of Podiatry, School of Allied Health, Human Services and Sport, College of Science, Health and Engineering, La Trobe University, Melbourne, 3086, Australia;2. La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, College of Science, Health and Engineering, La Trobe University, Melbourne, 3086, Australia;3. Discipline of Sport and Exercise Science, School of Allied Health, Human Services and Sport, College of Science, Health and Engineering, La Trobe University, Melbourne, 3086, Australia;4. 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, N6A 3K7, Canada;5. School of Health and Rehabilitation Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, 4072, Australia;1. Centre for Sports Research, School of Exercise and Nutrition Sciences, Deakin University, Australia;2. Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, Australia;3. Olympic Park Sports Medicine Centre, Australia;4. University of Queensland, School of Health and Rehabilitation Sciences: Physiotherapy, Australia |
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| Abstract: | BackgroundKnee osteoarthritis (OA) is a degenerative joint disease that affects millions of individuals each year. Several biomechanical variables during walking have been identified as risk factors for developing knee OA, including the peak external knee adduction moment (KAM) and the knee flexion angle at initial contact. Many interventions have been studied to help mitigate these risk factors, including footwear. However, it is largely unknown how varying shoe cushioning may affect walking biomechanics related to knee OA risk.Research QuestionWhat is the effect of maximally and minimally cushioned shoes on walking biomechanics compared to a traditionally cushioned shoe in older females?MethodsWalking biomechanics in three shoes (maximal, traditional, minimal) were collected on 16 healthy females ages 50–70 using an 8-camera 3D motion capture system and two embedded force plates. Key biomechanical variables related to knee OA disease risk were compared between shoes using repeated measures ANOVAs.ResultsThe KAM was significantly larger in the maximal shoe (p = 0.005), while the knee flexion angle at initial contact was significantly larger in both the maximal and minimal shoe compared to the traditional shoe (p = .000). Additionally, the peak knee flexion angle (p = .000) and the loading rates of the vertical ground reaction force were (instantaneous: p = 0.001; average: p = .010) were significantly higher in the minimal shoe.SignificanceWhile these results are specific to the shoes used in this study, clinicians should exercise caution in prescribing maximal or minimal shoes to females in this age group who may be at risk of knee OA given these results. Research is needed on the effect of these shoes in patients with knee OA. |
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| Keywords: | Maximal shoes Minimal shoes Knee adduction moment Knee flexion moment Knee osteoarthritis |
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