Temporal symmetries during gait initiation and termination in nondisabled ambulators and in people with unilateral transtibial limb loss

Steve C. Miff, Dudley S. Childress, Steven A. Gard, Margrit R. Meier, Andrew H. Hansen

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

This study investigated the temporal characteristics of gait initiation and gait termination. Ten nondisabled adult volunteers and ten people with unilateral transtibial limb loss performed starting and stopping for slow, normal, and fast walking speeds. We used kinematic and anthropomorphic data to determine the body center of mass (BCOM) position of each subject. The BCOM acceleration was derived by double-differentiating the position data. An averaged BCOM acceleration was calculated by a filtering of the instantaneous acceleration data at a cutoff frequency set by the cadence for elimination of the step-to-step variation. We used this averaged acceleration to calculate the time the volunteers needed to initiate and terminate gait. The results support the hypothesis that both nondisabled ambulators and the subjects with unilateral transtibial limb loss initiate and terminate gait in approximately two steps, regardless of the steady-state walking speed.

Original languageEnglish (US)
Pages (from-to)175-182
Number of pages8
JournalJournal of Rehabilitation Research and Development
Volume42
Issue number2
DOIs
StatePublished - Mar 2005

Keywords

  • Acceleration
  • Deceleration
  • Disabled persons
  • Gait
  • Human movement
  • Initiation
  • Kinematics
  • Rehabilitation
  • Temporal-spatial
  • Termination

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