title: Comparison of kinematic variables obtained by inertial sensors among stroke survivors and healthy older adults in the Functional Reach Test: cross-sectional study.
abstract: BACKGROUND
  Balance dysfunction is one of the most common problems in people who suffer stroke. To parameterize functional tests standardized by inertial sensors have been promoted in applied medicine. The aim of this study was to compare the kinematic variables of the Functional Reach Test (FRT) obtained by two inertial sensors placed on the trunk and lumbar region between stroke survivors (SS) and healthy older adults (HOA) and to analyze the reliability of the kinematic measurements obtained.
  
  
  METHODS
  Cross-sectional study. Five SS and five HOA over 65. A descriptive analysis of the average range as well as all kinematic variables recorded was developed. The intrasubject and intersubject reliability of the measured variables was directly calculated.
  
  
  RESULTS
  In the same intervals, the angular displacement was greater in the HOA group; however, they were completed at similar times for both groups, and HOA conducted the test at a higher speed and greater acceleration in each of the intervals. The SS values were higher than HOA values in the maximum and minimum acceleration in the trunk and in the lumbar region.
  
  
  CONCLUSIONS
  The SS show less functional reach, a narrower, slower and less accelerated movement during the FRT execution, but with higher peaks of acceleration and speed when they are compared with HOA.
authors.affiliation: Departamento de Psiquiatría y Fisioterapia, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga, 29071, Málaga, Spain. josan_mb@hotmail.com.
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Merchán-Baeza
authors.affiliation: Departamento de Psiquiatría y Fisioterapia, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga, 29071, Málaga, Spain. mgsa23@yahoo.it.
authors.forename: Manuel
authors.initials: M
authors.lastname: González-Sánchez
authors.affiliation: Departamento de Psiquiatría y Fisioterapia, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga, 29071, Málaga, Spain. acuesta.var@gmail.com.|School of Clinical Sciences of the Faculty of Health, Queensland University of Technology, Level 6, O Block, D Wing, Kelvin Grove, Brisbane, Australia. acuesta.var@gmail.com.
authors.forename: Antonio Ignacio
authors.initials: AI
authors.lastname: Cuesta-Vargas
mesh_terms: D061725:Accelerometry / Q000295:instrumentation*; D000368:Aged; D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008161:Lumbosacral Region / Q000502:physiology / Q000503:physiopathology; D008297:Male; D055595:Mechanical Phenomena; D009068:Movement; D004856:Postural Balance; D020521:Stroke / Q000503:physiopathology*; D017741:Survivors; D060726:Torso / Q000502:physiology / Q000503:physiopathology