title: Sit-to-walk Task in Hemiplegic Stroke Patients: Relationship between Movement Fluidity and the Motor Strategy in Initial Contact.
abstract: OBJECTIVE
  Generally, stroke patients can walk and stand up fluidly but fulfill the sit-to-walk (STW) task with difficulty. The purpose of this study was to investigate the relationship between movement fluidity and motor strategy in the initial contact of the STW task.
  
  
  METHODS
  Thirty stroke patients and ten healthy subjects performed the STW task from a sitting position, and their movement was measured by a motion analysis system. The differences in data between patients and healthy subjects were analyzed using the Mann-Whitney U test. The relationship between fluidity index (FI) and other indices (kinetic and kinematic data in STW, functional independence measure [FIM], and Fugl-Meyer Assessment [FMA]) were analyzed using Spearman's rank correlation coefficient.
  
  
  RESULTS
  The stroke patients had lower FI values than the healthy subjects and exhibited shortened step length and prolonged duration from onset to the first stance leg off. FI values correlated with trunk flexure angle at initial contact, first step length, and maximum vertical floor reaction force. The independent level of the FIM of stair climbing and walking ability and the FMA of balance also correlated with FI.
  
  
  CONCLUSIONS
  There is a possibility that poor balance is one of the reasons why stroke patients are unable to start walking fluently from the sitting position. To perform the STW fluidly, patients must start walking before the trunk extension is fully completed. The relationship between FI and indices of physical ability, namely stair climbing and balance, may have therapeutic benefits for coaching the STW task to stroke patients.
authors.affiliation: Seiai Rehabilitation Hospital.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Osada
authors.affiliation: Graduate School of International University of Health and Welfare.
authors.forename: Sumiko
authors.initials: S
authors.lastname: Yamamoto
authors.affiliation: Seiai Rehabilitation Hospital.
authors.forename: Masako
authors.initials: M
authors.lastname: Fuchi
authors.affiliation: Seiai Rehabilitation Hospital.
authors.forename: Setsuro
authors.initials: S
authors.lastname: Ibayashi
keywords: Fluidity index; sit-to-walk; stroke