Go to  Advanced Search

Temporal-distance and kinematic adaptations to a novel walking task

Show full item record

Files in this item

Files Size Format Description   View
ubc_2004-0673.pdf 5.229Mb Adobe Portable Document Format   View/Open
Title: Temporal-distance and kinematic adaptations to a novel walking task
Author: Vanicek, Natalie Katja
Degree Master of Science - MSc
Program Human Kinetics
Copyright Date: 2004
Abstract: The process of relearning locomotor skills is a complex one for the person with a lower-limb amputation and difficult to track in the rehabilitation setting. An in-house designed prosthetic simulator (PS) was created to allow able-bodied individuals to walk in a prosthetic-like situation. The purpose of this study was to follow the changes in selected gait variables during a novel walking task. Kinematic data were collected for ten able-bodied individuals during 30-minutes of continuous walking with the PS. Walking speed and selected gait characteristics and the vertical orientation of body segments were computed every 5% of the total walking distance during the first lab visit and walking speed again during a second lab visit. Separate repeated measures ANOVAs were conducted with p < 0.01. Participants were immediately able to walk unassisted with the PS. Walking speed on the first test session was initially slow (0.27 m • s-1) but significantly increased over distance walked (to 0.70 m • s-1). Initial time in stance was significantly greater on the intact limb (86 %) than on the prosthetic limb (68 %). Prosthetic step length was significantly longer (0.52 m) than intact step length (-0.10 m). Lower-limb segments were significantly less vertically oriented at prosthetic/intact foot contact during the walking task. Initial walking speed on the second session (0.58 m • s-1) was significantly higher than on the first session. Variability of the measured gait variables was initially high but decreased within the first 5% of the total distance walked. Walking speed during the first five strides after removing the PS (1.13 m • s-1) was significantly slower than the control condition (1.30 m • s-1). Participants were able to adapt quickly to the new constraints imposed by a PS by modifying kinematic variables. Changes occurred during the first 5%-10% of total walking distance suggesting adaptive strategies were developed early in the task. The presence of a short-term speed after effect suggested that adaptation had occurred. The findings from this project provide a novel outlook for rehabilitation strategies with the potential of tracking able-bodied individuals as they learn to walk in a prosthetic-like situation.
URI: http://hdl.handle.net/2429/15718
Series/Report no. UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]

This item appears in the following Collection(s)

Show full item record

All items in cIRcle are protected by copyright, with all rights reserved.

UBC Library
1961 East Mall
Vancouver, B.C.
Canada V6T 1Z1
Tel: 604-822-6375
Fax: 604-822-3893