Age-associated differences in global and segmental control during dual-task walking under sub-optimal sensory conditions |
| |
| Affiliation: | 1. Department of Trauma and Orthopaedic Surgery, Consorcio Hospital General of Valencia, Spain;2. Department of Trauma and Orthopaedic Surgery, Hospital Clínico of Valencia, Spain;1. Inserm U1061, Montpellier, France;2. University of Montpellier 1, Montpellier, France;3. Department of Psychiatry, Nimes University Hospital, Nimes, France;4. CHU Montpellier, Hôpital Lapeyronie, Psychiatric Emergency and Post Emergency Department, Pole Urgence, Montpellier, France;5. Eating Disorders Program, Douglas University Institute, Psychiatry Department, McGill University, Montreal, 6875, boulevard Lasalle, Verdun, H4H 1R3, Quebec, Canada;1. Physical Medicine and Rehabilitation Department, University Hospital, Faculty of Medicine, University of Rennes 1, 2, rue Henri Le Guilloux, 35033 Rennes Cedex 9, France;2. Clinical Pharmacology Department, University Hospital, Faculty of Medicine, University of Rennes 1, Hôpital Pontchaillou, 2, rue Henri Le Guilloux, 35033 Rennes Cedex 9, France;3. PRM Department, GH Saint Louis Lariboisière F Widal AP-HP, Université Paris Diderot, 200 rue du Fbg St Denis, 75010 Paris, France;4. Physical Medicine and Rehabilitation Department, University Hospital, Faculty of Medicine, University of Amiens, avenue René Laënnec – Salouel, 80054 Amiens Cedex 1, France |
| |
| Abstract: | The ability to safely perform cognitive-motor dual-tasks is critical for independence of older adults. We compared age-associated differences in global and segmental control during dual-task walking in sub-optimal sensory conditions. Thirteen young (YA) and 13 healthy older (OA) adults walked a straight pathway with cognitive dual-task of walking-while-talking (WT) or no-WT under four sensory conditions. On randomly selected trials, visual and vestibular inputs were manipulated using blurring goggles (BV) and Galvanic Vestibular Stimulation (GVS), respectively. Gait speed decreased more in YA than OA during WT. Gait speed increased with GVS with normal vision but not BV. Step length considerably decreased with WT. Trunk roll significantly decreased only in OA with GVS in WT. Head roll significantly decreased with GVS regardless of age. Results indicate GVS-induced adaptations were dependent on available visual information. YA reduced their gait speed more than OA to achieve a similar pace to safely perform WT. GVS resulted in both age-groups to reduce head movement. However, with the addition of WT during GVS, OA also stiffened their trunk. Therefore, with increased attentional demands healthy OA employed different compensatory strategies than YA to maintain postural control. |
| |
| Keywords: | Aging Dual-task Gait Visual–vestibular interaction Postural control |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
