Reducing gait speed affects axial coordination of walking turns |
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| Affiliation: | 1. Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy, Stockholm, Sweden;2. Function Area Occupational Therapy & Physiotherapy, Allied Health Professionals Function, Karolinska University Hospital, Stockholm, Sweden;3. Department of Kinesiology and Physical Education, McGill University and Centre for Interdisciplinary Research in Rehabilitation, Montreal, Canada;1. APDM, Inc., 2828 SW Corbett Avenue, Portland, OR, USA;2. Department of Electrical and Computer Engineering, Portland State University, Portland, OR, USA;1. Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA;2. Department of Rehabilitation Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA;3. Department of Human Development and Family Studies, Texas Tech University, Lubbock, TX, USA;1. Program of Interdisciplinary Health Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA;2. Department of Kinesiology and Health, Georgia State University, P.O. Box 3975, Atlanta, GA, 30302, USA;1. Faculty of Health Sciences, University of Southampton, Southampton, UK;2. Department of Rehabilitation Sciences, Katholieke Universiteit Leuven, Leuven, Belgium;1. Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Nijmegen, The Netherlands;2. Department of Neurology, Medical University of Vienna, Vienna, Austria;3. Department of Neurology and Movement Disorders, Regional University Hospital, Lille Cedex, France;4. Radboud University Medical Centre, Donders Institute for Brain, Cognition and Behaviour, Department of Rehabilitation, Nijmegen, The Netherlands;5. Sint Maartenskliniek Research, Nijmegen, The Netherlands;1. Department of Physical Therapy, Faculty of Health Sciences, Hokkaido University of Science, Sapporo, Japan;2. Laboratory of Human Movement Sciences, Graduate School of Education, Hokkaido University, Sapporo, Japan;3. Department of Sport and Physical Education, School of Health and Sport Sciences, Chukyo University, Toyota, Japan |
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| Abstract: | Turning is a common feature of daily life and dynamic coordination of the axial body segments is a cornerstone for safe and efficient turning. Although slow walking speed is a common trait of old age and neurological disorders, little is known about the effect of walking speed on axial coordination during walking turns. The aim of this study was to investigate the influence of walking speed on axial coordination during walking turns in healthy elderly adults. Seventeen healthy elderly adults randomly performed 180° left and right turns while walking in their self-selected comfortable pace and in a slow pace speed. Turning velocity, spatiotemporal gait parameters (step length and step time), angular rotations and angular velocity of the head and pelvis, head-pelvis separation (i.e. the angular difference in degrees between the rotation of the head and pelvis) and head-pelvis velocity were analyzed using Wilcoxon signed-rank tests. During slow walking, turning velocity was 15% lower accompanied by shorter step length and longer step time compared to comfortable walking. Reducing walking speed also led to a decrease in the amplitude and velocity of the axial rotation of the head and pelvis as well as a reduced head-pelvis separation and angular velocity. This study demonstrates that axial coordination during turning is speed dependent as evidenced by a more ‘en bloc’ movement pattern (i.e. less separation between axial segments) at reduced speeds in healthy older adults. This emphasizes the need for matching speed when comparing groups with diverse walking speeds to differentiate changes due to speed from changes due to disease. |
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| Keywords: | Walking velocity Turning Axial coordination Older adults Speed dependent |
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