An exploratory analysis of the effect of target geometry on kinematic variability during adaptive locomotion

• Author / Creator

  Runnalls, Keith David

• Bipedal locomotion over uneven terrain is a critical movement skill; however, a paucity of knowledge exists regarding the processes underlying the selection and execution of foot placements. The purpose of this study was to investigate the relationship between geometric features of the walking surface and spatial patterns of movement variability. Twelve healthy young adults completed a series of blocked trials in which they walked at a self selected pace, using two interchangeable blocks as footholds. The shape and configuration of the stepping blocks was manipulated to create 6 conditions. Foot kinematics were recorded using 3D optical motion capture. Patterns of end–point variability were reflective of stepping block geometry, indicating the movement potential afforded by a surface plays a role in stabilizing the movement pattern. This was interpreted as evidence of a rough terrain strategy which maximizes the probability of successful foot placement and minimizes the need for controller intervention.

• Subjects / Keywords

  • Walking--Physiological aspects
  • Bipedalism
  • Human mechanics
  • Human locomotion

• Graduation date

  Fall 2011

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3W09B

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.