Automatic detection of temporal gait parameters in poststroke individuals

IEEE Trans Inf Technol Biomed. 2011 Jul;15(4):594-601. doi: 10.1109/TITB.2011.2112773. Epub 2011 Feb 10.

Abstract

Approximately one-third of people who recover from a stroke require some form of assistance to walk. Repetitive task-oriented rehabilitation interventions have been shown to improve motor control and function in people with stroke. Our long-term goal is to design and test an intensive task-oriented intervention that will utilize the two primary components of constrained-induced movement therapy: massed, task-oriented training and behavioral methods to increase use of the affected limb in the real world. The technological component of the intervention is based on a wearable footwear-based sensor system that monitors relative activity levels, functional utilization, and gait parameters of affected and unaffected lower extremities. The purpose of this study is to describe a methodology to automatically identify temporal gait parameters of poststroke individuals to be used in assessment of functional utilization of the affected lower extremity as a part of behavior enhancing feedback. An algorithm accounting for intersubject variability is capable of achieving estimation error in the range of 2.6-18.6% producing comparable results for healthy and poststroke subjects. The proposed methodology is based on inexpensive and user-friendly technology that will enable research and clinical applications for rehabilitation of people who have experienced a stroke.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Acceleration
  • Adolescent
  • Adult
  • Aged
  • Algorithms
  • Clothing
  • Female
  • Gait / physiology*
  • Humans
  • Male
  • Middle Aged
  • Monitoring, Ambulatory / instrumentation
  • Monitoring, Ambulatory / methods*
  • Pattern Recognition, Automated / methods*
  • Shoes
  • Signal Processing, Computer-Assisted*
  • Stroke Rehabilitation*