Comparison of intra-individual physiological sway complexity from force plate and inertial measurement unit

Rahul Soangra, Thurmon Lockhart

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Center of Pressure (COP) is a clinical measure to investigate the effect of sensory input disturbances on postural stability in the healthy, elderly population as well in people suffering from neuromuscular disease. Increased center of pressure velocity and sway area are interpreted as decreased stability or poor balance and are associated with fall risk. Body mounted inertial sensors have shown great promise as an easily implemented clinical measure of balance. The aim of the present study is to investigate if force-plate and accelerometer measurements provide similar physiological information when approximate entropy (ApEn) are evaluated from a time series. Seven young and thirteen older individuals (two with fall history and nine without any past fall) participated in this study. There were different complexity measures in healthy young and elderly participants when both force-plate and Inertial Measurement Unit (IMU) were assessed during the same time interval. Thus different control mechanisms are underlying to control trunk sway as measured by IMU than that of COP measured by force-plate.

Original languageEnglish (US)
Pages (from-to)180-186
Number of pages7
JournalBiomedical Sciences Instrumentation
Volume49
StatePublished - 2013
Externally publishedYes

Fingerprint

Pressure
Neuromuscular Diseases
Entropy
History
Population

Keywords

  • Approximate entropy
  • Complexity
  • Postural stability

ASJC Scopus subject areas

  • Medical Laboratory Technology
  • Biophysics

Cite this

@article{9f27d28531844cb88876b3090331a0c9,
title = "Comparison of intra-individual physiological sway complexity from force plate and inertial measurement unit",
abstract = "Center of Pressure (COP) is a clinical measure to investigate the effect of sensory input disturbances on postural stability in the healthy, elderly population as well in people suffering from neuromuscular disease. Increased center of pressure velocity and sway area are interpreted as decreased stability or poor balance and are associated with fall risk. Body mounted inertial sensors have shown great promise as an easily implemented clinical measure of balance. The aim of the present study is to investigate if force-plate and accelerometer measurements provide similar physiological information when approximate entropy (ApEn) are evaluated from a time series. Seven young and thirteen older individuals (two with fall history and nine without any past fall) participated in this study. There were different complexity measures in healthy young and elderly participants when both force-plate and Inertial Measurement Unit (IMU) were assessed during the same time interval. Thus different control mechanisms are underlying to control trunk sway as measured by IMU than that of COP measured by force-plate.",
keywords = "Approximate entropy, Complexity, Postural stability",
author = "Rahul Soangra and Thurmon Lockhart",
year = "2013",
language = "English (US)",
volume = "49",
pages = "180--186",
journal = "Biomedical Sciences Instrumentation",
issn = "0067-8856",
publisher = "ISA - Instrumentation, Systems, and Automation Society",

}

TY - JOUR

T1 - Comparison of intra-individual physiological sway complexity from force plate and inertial measurement unit

AU - Soangra, Rahul

AU - Lockhart, Thurmon

PY - 2013

Y1 - 2013

N2 - Center of Pressure (COP) is a clinical measure to investigate the effect of sensory input disturbances on postural stability in the healthy, elderly population as well in people suffering from neuromuscular disease. Increased center of pressure velocity and sway area are interpreted as decreased stability or poor balance and are associated with fall risk. Body mounted inertial sensors have shown great promise as an easily implemented clinical measure of balance. The aim of the present study is to investigate if force-plate and accelerometer measurements provide similar physiological information when approximate entropy (ApEn) are evaluated from a time series. Seven young and thirteen older individuals (two with fall history and nine without any past fall) participated in this study. There were different complexity measures in healthy young and elderly participants when both force-plate and Inertial Measurement Unit (IMU) were assessed during the same time interval. Thus different control mechanisms are underlying to control trunk sway as measured by IMU than that of COP measured by force-plate.

AB - Center of Pressure (COP) is a clinical measure to investigate the effect of sensory input disturbances on postural stability in the healthy, elderly population as well in people suffering from neuromuscular disease. Increased center of pressure velocity and sway area are interpreted as decreased stability or poor balance and are associated with fall risk. Body mounted inertial sensors have shown great promise as an easily implemented clinical measure of balance. The aim of the present study is to investigate if force-plate and accelerometer measurements provide similar physiological information when approximate entropy (ApEn) are evaluated from a time series. Seven young and thirteen older individuals (two with fall history and nine without any past fall) participated in this study. There were different complexity measures in healthy young and elderly participants when both force-plate and Inertial Measurement Unit (IMU) were assessed during the same time interval. Thus different control mechanisms are underlying to control trunk sway as measured by IMU than that of COP measured by force-plate.

KW - Approximate entropy

KW - Complexity

KW - Postural stability

UR - http://www.scopus.com/inward/record.url?scp=84897092642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897092642&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84897092642

VL - 49

SP - 180

EP - 186

JO - Biomedical Sciences Instrumentation

JF - Biomedical Sciences Instrumentation

SN - 0067-8856

ER -