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Related Experiment Video

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Gait Analysis of Age-dependent Motor Impairments in Mice with Neurodegeneration
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Age-Related Differences in Locomotor Strategies During Adaptive Walking.

Kristin A Lowry1, Katherine Sebastian2, Subashan Perera3

  • 1a Department of Physical Therapy , Des Moines University , Des Moines , Iowa.

Journal of Motor Behavior
|November 22, 2016
PubMed
Summary

Older adults prioritize side-to-side balance (mediolateral smoothness) over forward motion (anteroposterior smoothness) when adapting their walking. This strategy reduces stepping consistency and step length during challenging gait tasks.

Keywords:
adultsgaitolder smoothnessstep width

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Area of Science:

  • Biomechanics
  • Human locomotion
  • Geriatric gait analysis

Background:

  • Simultaneous control of lower limb and trunk movements is crucial for skilled walking.
  • Adapting gait to environmental changes necessitates frequent adjustments in stepping and trunk motion, revealing underlying locomotor strategies.

Purpose of the Study:

  • To investigate gait strategies in young and older adults when step width is manipulated.
  • To understand how older adults adapt their walking patterns under altered step width conditions.

Main Methods:

  • Analysis of anteroposterior (AP) and mediolateral (ML) smoothness using harmonic ratios.
  • Assessment of stepping consistency through gait variability measurements.
  • Comparison of gait parameters during narrow and wide walking at preferred cadence.

Main Results:

  • Older adults maintained ML smoothness but sacrificed AP smoothness.
  • Older adults exhibited shorter step lengths and reduced stepping consistency compared to younger adults.
  • A trade-off between ML stability and AP progression was observed in older adults.

Conclusions:

  • Older adults prioritize ML control over forward progression during adaptive walking.
  • Gait adaptations in older adults suggest a strategy focused on stability during challenging conditions.
  • Findings provide insights into age-related changes in locomotor control and adaptability.