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Related Experiment Videos

Reduced hip extension in the elderly: dynamic or postural?

Laura W Lee1, Keyvan Zavarei, Jonathan Evans

  • 1Department of Physical Medicine and Rehabilitation, University of Virginia School of Medicine, Charlottesville, VA 22098-1004, USA. lwl62@virginia.edu

Archives of Physical Medicine and Rehabilitation
|September 27, 2005
PubMed
Summary

Reduced hip extension and increased pelvic tilt in older adults are dynamic gait changes, not static posture issues. These age-related gait differences emerge during walking, not while standing still.

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Area of Science:

  • Biomechanics
  • Gerontology
  • Kinesiology

Background:

  • Age-related gait changes are common in older adults.
  • Previous studies suggest potential alterations in hip extension and pelvic tilt.

Purpose of the Study:

  • To investigate if reduced hip extension and increased anterior pelvic tilt in the elderly are dynamic gait phenomena.
  • To determine if these changes occur during normal standing posture.

Main Methods:

  • Experimental design with 25 older adults and 25 young adults.
  • 3D motion analysis system to measure pelvic and lower extremity kinematics.
  • Observed subjects during standing and walking at various speeds.

Main Results:

  • No significant differences in hip extension or pelvic tilt between groups while standing.

Related Experiment Videos

  • Older adults showed reduced peak hip extension and increased anterior pelvic tilt during comfortable and fast walking speeds.
  • Differences were most pronounced at comfortable walking speeds.

    • Conclusions:

    • Age-related gait alterations in hip extension and pelvic tilt are dynamic.
    • These changes are characteristic of walking, not standing posture.