title: Gait transitions of persons with and without intellectual disability.
abstract: This study examined whether the walk-to-run transition speed (W-RTS) and the run-to-walk transition speed (R-WTS) were different or more variable between participants with and without intellectual disability (ID). Nine adults with ID and 10 adults without ID completed in a series of walk-to-run and run-to-walk trials on a treadmill. W-RTS and R-WTS were identified using force-sensitive resistors. When transition speeds were expressed as Froude numbers to account for differences in leg length, W-RTS was slower and intraindividual variability of W-RTS and R-WTS was greater in participants with ID. These findings support the idea that the unique constraints of individuals with ID result in altered attractor dynamics for walking and a weaker coupling between locomotor speed and order parameters governing gait transitions.
authors.affiliation: Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Rehabilitation Education Center, 61820, USA. agiovlas@uiuc.edu
authors.forename: Stamatis
authors.initials: S
authors.lastname: Agiovlasitis
authors.forename: Joonkoo
authors.initials: J
authors.lastname: Yun
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Pavol
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: McCubbin
authors.forename: So-Yeun
authors.initials: SY
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D005080:Exercise Test; D005260:Female; D020233:Gait Disorders, Neurologic / Q000503:physiopathology*; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology*; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D012420:Running / Q000502:physiology; D016138:Walking / Q000502:physiology