Manipulating walking path configuration influences gait variability and six-minute walk test outcomes in older and younger adults |
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| Institution: | 1. Department of Physical Therapy, Sackler Faculty of Medicine, Tel-Aviv University, Israel;2. Multiple Sclerosis Center, Sheba Medical Center, Tel Hashomer, Israel;1. Département de Biologie, Université du Québec à Montréal, Montréal, Canada;2. Groupe de Recherche en Activité Physique Adaptée, Université du Québec à Montréal, Montréal, Canada;3. Centre de Recherche de l''Institut Universitaire de Gériatrie de Montréal, Montréal, Canada;4. Département des sciences de l''activité physique, Université du Québec à Montréal, Montréal, Canada;5. Service de Médecine interne et de Gérontologie Clinique, Hôpital La Grave-Casselardit, Toulouse, France;6. Unité Inserm 558, Faculté de Médecine de Toulouse, Toulouse, France;1. São Paulo State University, Institute of Biosciences, Posture and Locomotion Studies Laboratory (LEPLO), Rio Claro, Brazil;2. Post-graduation Program in Movement Science, São Paulo State University - UNESP;1. Department of Health and Exercise Science, Colorado State University, Fort Collins, CO, USA;2. Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA;3. Molecular, Cellular, and Integrative Neuroscience Program, Colorado State University, Fort Collins, CO, USA;1. Physical Medicine and Rehabilitation Unit, Salvatore Maugeri Foundation, Institute of Care and Research (IRCCS), Scientific Institute of Lissone, Milan, Italy;2. Neuroengineering and Medical Robotics Laboratory (NearLab), Department of Electronics, Information, and Bioengineering, Politecnico di Milano, Milan, Italy |
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| Abstract: | This study determined whether manipulations to walking path configuration influenced six-minute walk test (6MWT) outcomes and assessed how gait variability changes over the duration of the 6MWT in different walking path configurations. Healthy older (ODR) and younger (YNG) (n = 24) adults completed familiarisation trials and five randomly ordered experimental trials of the 6MWT with walking configurations of; 5, 10 and 15 m straight lines, a 6 m by 3 m rectangle (RECT), and a figure of eight (FIG8). Six-minute walk distance (6MWD) and walking speed (m.s?1) were recorded for all trials and the stride count recorded for experimental trials. Reflective markers were attached to the sacrum and feet with kinematic data recorded at 100 Hz by a nine-camera motion capture system for 5 m, 15 m and FIG8 trials, in order to calculate variability in stride and step length, stride width, stride and step time and double limb support time. Walking speeds and 6MWD were greatest in the 15 m and FIG8 experimental trials in both groups (p < 0.01). Step length and stride width variability were consistent over the 6MWT duration but greater in the 5 m trial vs. the 15 m and FIG8 trials (p < 0.05). Stride and step time and double limb support time variability all reduced between 10 and 30 strides (p < 0.01). Stride and step time variability were greater in the 5 m vs. 15 m and FIG8 trials (p < 0.01). Increasing uninterrupted gait and walking path length results in improved 6MWT outcomes and decreased gait variability in older and younger adults. |
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| Keywords: | Gait Variability Ageing Six-minute walk test Older adults |
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