Effects of passive interpersonal light touch during walking on postural control responses: An exploratory study |
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| Affiliation: | 1. Department of Physical Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan;2. Department of Occupational Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan;1. Département des sciences de l''activité physique, Université du Québec à Trois-Rivières, 3351, boulevard des Forges, Trois-Rivières, QC G8Z 4M3, Canada;2. École de kinésiologie et des sciences de l''activité physique de la Faculté de médecine, Université de Montréal, 2100 Edouard Montpetit Blvd. #6219, Montreal, QC H3T 1J4, Canada;3. Centre de recherche du CHU Sainte-Justine, 5858 Côte-des-Neiges Rd, Montreal, QC H3S 1Z1, Canada;4. Department of Family Medicine, McGill University, 5858 Côte-des-Neiges Rd, Montreal, QC H3S 1Z1, Canada;5. Human Kinetics Department, St Francis Xavier University, 4130 University Ave, Antigonish, NS B2G 2W5, Canada;6. Département de kinésiologie, Université Laval, 2300, rue de la Terrasse, Quebec, QC G1V 0A6, Canada;7. Département de Pédiatrique, Faculté de médecine, Université de Montréal, 3175, chemin Côte Sainte-Catherine, Montréal, QC H3T 1C5, Canada;1. Department of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece;2. Department of Experimental Psychology, Justus Liebig University Giessen, Giessen, Germany;3. Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, the Netherlands;1. Institute of Psychology, Department of Psychology and Sports Medicine, UMIT TIROL - Private University for Health Sciences and Health Technology, Hall in Tyrol, Austria;2. Department of Psychology, Faculty of Psychology and Sports Sciences, University of Innsbruck, Austria;1. Department of Physical Therapy, California State University Northridge, Northridge, CA, USA;2. Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA;3. Department of Psychology, University of Southern California, Los Angeles, CA, USA;4. Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA;1. Centre for Interdisciplinary Research in Rehabilitation and Social Integration, CIUSSS-CN, IRDPQ, Québec, Canada;2. Department of Rehabilitation, Faculty of Medicine, Université Laval, Québec, Canada;3. School of Physical and Occupational Therapy, McGill University, Québec, Canada;4. Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital – CISSS Laval site of Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Québec, Canada;1. Joint Department of Biomedical Engineering, University of North Carolina Chapel Hill and North Carolina State University, Chapel Hill, NC, USA;2. Dept. of Chemical and Biomedical Engineering, West Virginia University, USA;3. North Carolina School of Science and Mathematics, USA;4. Dept. of Mechanical and Aerospace Engineering, University of Florida, USA;5. Division of Physical Therapy, University of North Carolina Chapel Hill, USA;6. Dept. of Kinesiology and Applied Physiology, University of Delaware, USA |
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| Abstract: | The effects of passive interpersonal light touch (PILT) on postural stability can be observed through improved postural coordination through haptic feedback from the contact provider to the contact receiver while walking. It is unclear, however, whether PILT affects the contact receiver's detailed physical responses, such as muscle activity, body sway, and joint movements. In this study, surface electromyography and an inertial measurement unit were used simultaneously to explore changes in walking speed and control responses induced by PILT. We evaluated fourteen healthy participants for their walking speed and physical responses under two walking conditions: no-touch (NT) and PILT. As a physical response during walking, we measured muscle activity (rectus femoris, semitendinosus, tibialis anterior, and soleus muscles), body sway (pelvis and neck), and joint angles (direction of hip, knee, and ankle joint movements). In PILT condition, fingertip contact force was measured while the contact provider touched the third level of the recipient's lumbar spine. In comparison with the NT condition, PILT condition increased walking speed and decreased body sway on neck position. There were significant correlations between walking speed and neck sway regarding NT and PILT change values. Passive haptic information to the contact receiver may assist in the smooth shift of the center of gravity position during gait through interpersonal postural coordination. These findings suggest that PILT may provide an efficient and stable gait. |
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