Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Dynamic stability differences in fall-prone and healthy adults.

Authors
Granata-KP; Lockhart-TE
Source
J Electromyogr Kinesiol 2008 Apr; 18(2):172-178
NIOSHTIC No.
20043288
Abstract
Typical stability assessments characterize performance in standing balance despite the fact that most falls occur during dynamic activities such as walking. The objective of this study was to identify dynamic stability differences between fall-prone elderly individuals, healthy age-matched adults, and young adults. Three-dimensional video-motion analysis kinematic data were recorded for 35 contiguous steps while subjects walked on a treadmill at three speeds. From this data, we estimated the vector from the center-of-mass to the center of pressure at each foot-strike. Dynamic stability of walking was computed by methods of Poincare analyses of these vectors. Results revealed that the fall-prone group demonstrated poorer dynamic stability than the healthy elderly and young adult groups. Stability was not influenced by walking velocity, indicating that group differences in walking speed could not fully explain the differences in stability. This pilot study supports the need for future investigations using larger population samples to study fall-prone individuals using nonlinear dynamic analyses of movement kinematics.
Keywords
Accidents; Injuries; Fall-protection; Humans; Men; Women; Posture; Author Keywords: Stability; Falls
CODEN
JEKIE3
Publication Date
20080401
Document Type
Journal Article
Email Address
lockhart@vt.edu
Funding Type
Cooperative Agreement
Fiscal Year
2008
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U19-OH-008308
Issue of Publication
2
ISSN
1050-6411
Source Name
Journal of Electromyography and Kinesiology
State
VA
Performing Organization
Virginia Polytechnic Institute and State University
TOP