Estimation of gait cycle characteristics by trunk accelerometry

J Biomech. 2004 Jan;37(1):121-6. doi: 10.1016/s0021-9290(03)00233-1.


This study reports on the novel use of a portable system to measure gait cycle parameters. Measurements were made by a triaxial accelerometer over the lower trunk during timed walking over a range of self-administered speeds. Signals from each trial were transformed to a horizontal-vertical coordinate system and analyzed by an unbiased autocorrelation procedure to obtain cadence, step length, and measures of gait regularity and symmetry. By curvilinear interpolation, speed-dependent gait parameters could be compared at a normalized speed. It was demonstrated that analysis of gait cycle parameters which previously required fixed laboratory equipment and paced walking procedures, now can be made from data obtained by a timing device and a portable sensor at free walking speeds.

Publication types

  • Evaluation Study

MeSH terms

  • Abdomen / physiology
  • Acceleration*
  • Algorithms
  • Back / physiology
  • Diagnosis, Computer-Assisted / instrumentation
  • Diagnosis, Computer-Assisted / methods*
  • Gait / physiology*
  • Hemiplegia / physiopathology
  • Humans
  • Lumbar Vertebrae / physiology*
  • Models, Biological*
  • Models, Statistical*
  • Monitoring, Ambulatory / instrumentation
  • Monitoring, Ambulatory / methods*
  • Physical Examination / instrumentation
  • Physical Examination / methods
  • Statistics as Topic
  • Thorax / physiology
  • Transducers*