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Muscle activity during gait initiation in normal elderly people.

J Mickelborough1, M L van der Linden, R C Tallis

  • 1Centre for Rehabilitation and Human Performance Research, Brian Blatchford Building, The University of Salford, Frederick Road, M6 6PU Salford, UK. j.mickelborough@salford.ac.uk

Gait & Posture
|January 27, 2004
PubMed
Summary

This study examined muscle activity patterns during gait initiation in elderly individuals. Findings reveal variable muscle activation, particularly in the preparatory phase, offering a baseline for clinical comparisons.

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Area of Science:

  • Biomechanics
  • Neuroscience
  • Gerontology

Background:

  • Gait initiation is a complex process.
  • Understanding normal gait initiation is crucial for identifying abnormalities.
  • Elderly individuals often experience gait and balance challenges.

Purpose of the Study:

  • To characterize phasic muscle activity patterns during gait initiation in healthy older adults.
  • To establish a normative dataset for muscle activation during this transitional movement.

Main Methods:

  • Surface electromyography (EMG) was used to record muscle activity.
  • Bilateral EMG data were collected from tibialis anterior, medial gastrocnemius, and gluteus medius.
  • Recordings were made throughout the gait initiation process in 21 elderly participants.

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Main Results:

  • Observed variable expression in muscle onset patterns during gait initiation.
  • Noted a trend towards increased muscle activity variability in the preparatory phase.
  • Established a baseline of normal muscle activation patterns.

Conclusions:

  • Elderly individuals exhibit variability in muscle activation during gait initiation.
  • The preparatory phase shows a tendency for more variable muscle activity.
  • This research provides a reference for assessing gait and balance disorders.