Accuracy and concurrent validity of a sensor-based analysis of sit-to-stand movements in older adults

G. Ruben H. Regterschot*, Wei Zhang, Heribert Baldus, Martin Stevens, Wiebren Zijlstra

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)

Abstract

Body-fixed motion sensors have been applied for the assessment of sit-to-stand (STS) performance. However, the accuracy and concurrent validity of sensor-based estimations of the body's center of mass (CoM) motion during STS are unclear. Therefore, this study investigated the accuracy and concurrent validity of sensor-based measures of CoM motion during STS in older adults. Accuracy and concurrent validity were investigated by comparing the sensor-based method to a force plate method. Twenty-seven older adults (20 females, 7 males; age: 72-94 years) performed five STS movements while data were collected with force plates and motion sensors on the hip and chest. Hip maximal acceleration provided an accurate estimation of the center of mass (CoM) maximal acceleration (limits of agreement (LOA) smaller than 5% of the CoM maximal acceleration; estimated and real CoM maximal acceleration did not differ (p = 0.823)). Other hip STS measures and the chest STS measures did not provide accurate estimations of CoM motion (LOA ranged from -155.6% to 333.3% of the CoM value; sensor-based measures overestimated CoM motion (range p:

Original languageEnglish
Pages (from-to)198-203
Number of pages6
JournalGait & Posture
Volume45
DOIs
Publication statusPublished - Mar-2016

Keywords

  • Accelerometry
  • Kinematics
  • Clinical assessment
  • Aged
  • Sit-to-stand
  • TEST-RETEST RELIABILITY
  • MUSCLE POWER
  • LEG POWER
  • FUNCTIONAL STATUS
  • PERFORMANCE
  • STRENGTH
  • MOBILITY
  • PEOPLE
  • YOUNG

Cite this