Dual tasking affects lateral trunk control in healthy younger and older adults |
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| Authors: | Tsuyoshi Asai Takehiko Doi Soichiro Hirata Hiroshi Ando |
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| Institution: | 1. Department of Medical Rehabilitation, Faculty of Rehabilitation, Kobe Gakuin University, Kobe, Japan;2. National Center for Geriatrics and Gerontology, Aichi, Japan;3. Higashihirosima Orthopedic, Hiroshima, Japan;4. Kobe University Graduate School of Health Sciences, Kobe, Japan;1. Institute for Ageing and Health, Clinical Ageing Research Unit, Newcastle University, Newcastle Upon Tyne NE4 5PL, United Kingdom;2. Clinical Research Centre for Movement Disorders and Gait, Southern Health Centre, Victoria 3192, Australia;3. Monash Ageing Research Centre, Monash University, Victoria 3800, Australia;4. School of Allied Health, Musculoskeletal Research Centre, La Trobe University, Victoria 3084, Australia;1. Movement Analysis Lab, Institute for Experimental Musculoskeletal Medicine, University Hospital Münster, Germany;2. Gait Lab, Sozialpädiatrisches Zentrum Westmünsterland, St.-Vincenz-Hospital Coesfeld, Germany;1. Department of Rehabilitation Sciences – Musculoskeletal Rehabilitation Research Group, KULeuven, Belgium;2. Division of Musculoskeletal Disorders, Multidisciplinary Diabetic Foot Clinic, University Hospitals Leuven, KULeuven, Belgium;3. Laboratory for Clinical Motion Analysis, University Hospital Pellenberg, KULeuven, Belgium;4. Haute Ecole Léonard De Vinci, Institut D’Enseignement Supérieur Parnasse Deux-Alice, Division of Podiatry, Bruxelles, Belgium;5. Department of Rehabilitation Sciences and Physiotherapy, Research Group: Musculoskeletal Rehabilitation, University of Ghent, Belgium;6. Department of Mechanical Engineering, KULeuven, Belgium;7. Department of Rehabilitation Sciences, Research Group for Neuromotor, Pediatric and Pelvic Rehabilitation, KULeuven, Belgium;8. Foot and Ankle Institute, Clinique du Parc Léopold, Bruxelles, Belgium;9. Division of Orthopaedics and Traumatology, University Hospitals Leuven, KULeuven, Belgium;10. Department of Development & Regeneration, Biomechanics, Implants and Tissue Engineering, KULeuven, Belgium;11. Multidisciplinary Research Center for Biomedical and Rehabilitation Technology, Mobilab, UC Kempen, Belgium;1. School of Kinesiology, University of Minnesota, United States;2. Graduate Institute of Sport Coaching Science, Chinese Cultural University, Taiwan;3. Office of Institutional Research, Edgewood College, United States;4. College of Well Being, YuanPei University, Taiwan;5. Department of Recreation Sport & Health Promotion, National Pingtung University of Science and Technology, Taiwan |
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| Abstract: | Assessing the effects of attention-demanding tasks on trunk movement provides useful insights into postural control while walking in an attention-split situation, such as occurs in daily life. The coefficient of attenuation of acceleration (CoA) at the trunk is a useful gait index to assess whole trunk movements. We investigated the effect of attention-demanding tasks on CoA to assess the role of attention on trunk control during walking. Thirty healthy, community-dwelling older adults (70.1 ± 5.6 years) and 38 younger adults (22.1 ± 3.4 years) participated in this study. Participants walked 20 m at a self-selected speed (slow, normal, fast) and while performing an attention-demanding cognitive task. Trunk acceleration was measured using triaxial accelerometers attached to the lower (L3 spinous process) and upper (C7 spinous process) trunk and used to compute CoA (the reduction in acceleration from the lower to upper trunk). Results showed that an attention-demanding task significantly decreased CoA in the medio-lateral (ML) direction in both age groups (p < 0.001), whereas it did not affect CoA in the vertical (VT) and anterior–posterior (AP) directions. Our findings suggest that the priority of whole trunk control in the ML direction may be higher than in other directions and be strongly associated with attention, whereas whole trunk control in the VT and AP directions may be passively regulated and require minimal attentional control. |
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| Keywords: | Dual-task gait Lateral control Trunk Accelerometer |
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