The University of Southampton
University of Southampton Institutional Repository

Hip pull-off and ankle push-off in healthy and Parkinson's disease's gait

Sofuwa, Olumide (2009) Hip pull-off and ankle push-off in healthy and Parkinson's disease's gait University of Southampton, School of Health Sciences, Masters Thesis , 254pp.

Record type: Thesis (Masters)


An emerging theme in the analysis of the gait of people with Parkinson’s disease (PD) is that the kinetic features such as joint power generated during the events of ankle push-off and hip pull-off required for propulsion and progression of the lower limb is diminished inspite of PD medication. However, there is lack of sufficient evidence from the proponents of these PD gait deficiencies. Furthermore, it was thought in the present study that the cause of reduced joint power (if observed) could be attributed to their preferred slow walking speed Therefore, the research presented in this thesis investigated the pull and push-off events at usual walking speed (in healthy and people with PD) and at fast walking speed (in PD) to examine and substantiate what the other studies suggested.

The first part of the investigation into pull and push-off was to characterise and describe these gait events in healthy people whilst the second part was carried out on people affected with PD. A laboratory protocol/setup was designed for the first part of the study that was modified for use in the second part.

Fourteen healthy adults (mean age 63.6 ±7 years) participated in the first (laboratory based) study. Their gait was measured using a camera based motion analysis system (Coda mpx30) and a force platform that was situated on an 8m walkway. A gait laboratory test session was conducted per subject and the result of gait components of pull and push-off powers, ankle and hip joint angular excursion and corresponding gait velocity, stride length and cadence were recorded. Similar laboratory sessions with modification to the protocol/set up were also conducted (after an initial home clinical assessment and screening) for people with PD (n=11, mean age 66.4 ±5.07 years, disease duration 6±3.1 years, motor UPDRS score 24.3±9.98) walking at their usual and fast speeds during their on phase of PD medication.

The results showed that the gait of healthy subjects and subjects with PD was not significantly different from each other. Some PD subjects had greater pull-off and push-off powers than healthy subjects whilst a relationship between hip pull-off power and ankle plantarflexion suggests a compensatory strategy being used by PD subjects. PD subjects were able to significantly walk fast when asked to do so, with increments in the gait components. The results suggests that reduced pull and push-off powers are not applicable to all cases of PD and inspite of any diminished gait features their capacity to walk fast was still preserved.

PDF Whole_Thesis1_-_Copy_from_student_10_Nov_09.pdf - Other
Download (1MB)

More information

Published date: 13 July 2009
Organisations: University of Southampton


Local EPrints ID: 69510
PURE UUID: e4287a4b-5e98-4b79-8036-068d69adb5aa

Catalogue record

Date deposited: 27 Nov 2009
Last modified: 19 Jul 2017 00:12

Export record


Author: Olumide Sofuwa
Thesis advisor: Ann Ashburn

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.