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Related Experiment Videos

Stepping onto a single step: a kinematic study.

Fiona M Collen1, Gillian D Baer, Ann M Ashburn

  • 1University Rehabilitation Research Unit, Southampton General Hospital, UK.

Physiotherapy Research International : the Journal for Researchers and Clinicians in Physical Therapy
|September 9, 2005
PubMed
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Healthy older adults exhibit distinct pelvic and foot movement patterns when stepping up. Age and hemiplegia significantly alter stepping up kinematics, affecting movement speed and displacement.

Area of Science:

  • Biomechanics
  • Gerontology
  • Neurology

Background:

  • Understanding the biomechanics of stepping up is crucial for assessing mobility in older adults.
  • Limited data exists on the detailed kinematic patterns of stepping up in healthy older populations.

Purpose of the Study:

  • To quantify pelvic and foot linear displacements during stepping up in healthy older adults.
  • To identify kinematic variations in individuals with hemiplegia during this task.

Main Methods:

  • Observational case series in a gait laboratory.
  • Kinematic analysis using a 3D movement system (CODA).
  • Measured stepping up cycle time, pelvic lateral displacement, foot base width, and heel clearance.

Main Results:

Related Experiment Videos

  • Healthy subjects: mean stepping up time 1.68s, pelvic lateral displacement 70mm (asymmetrical).
  • Older adults (>60) showed reduced heel clearance compared to younger adults.
  • Hemiplegic subjects displayed significant variability, slower performance, increased pelvic displacement, and wider foot base.

Conclusions:

  • A novel kinematic profile of healthy stepping up is presented.
  • Age and hemiplegia demonstrably impact stepping up movement strategies.
  • Findings can inform physiotherapy interventions for elderly and hemiplegic individuals.