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Functional mobility and postural control in essential tremor.

Sarah L Parisi1, Martin E Héroux, Elsie G Culham

  • 1School of Rehabilitation Therapy, Queen's University, Kingston, ON, Canada.

Archives of Physical Medicine and Rehabilitation
|October 7, 2006
PubMed
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Essential tremor (ET) significantly impairs functional mobility and balance, particularly in individuals with head tremor. These findings highlight the need for targeted interventions to improve daily functioning in ET patients.

Area of Science:

  • Neurology
  • Movement Disorders
  • Gerontology

Background:

  • Essential tremor (ET) is a common neurological disorder.
  • Functional mobility and postural control are crucial for daily activities and fall prevention.
  • The impact of ET, especially with head tremor, on these specific functions requires detailed investigation.

Purpose of the Study:

  • To evaluate and compare functional mobility and postural control in individuals with essential tremor (ET) versus healthy controls.
  • To determine if the presence of head tremor in ET influences functional mobility and postural control outcomes.

Main Methods:

  • Cross-sectional cohort study involving 16 participants with ET and head tremor, 14 with ET without head tremor, and 28 healthy controls.
  • Assessed functional mobility using Timed Up & Go, stair ascent/descent, Dynamic Gait Index, and Berg Balance Scale (BBS).

Related Experiment Videos

  • Evaluated self-reported balance confidence (Activities-specific Balance Confidence Scale) and daily function (Human Activity Profile), alongside postural control via force platform center-of-pressure measures.

    • Main Results:

    • Participants with ET, particularly those with head tremor, demonstrated significantly worse performance on most functional mobility and self-report measures compared to controls.
    • The Berg Balance Scale (BBS) and stair descent time were exceptions, showing no significant group differences.
    • Postural sway speed showed similar trends, but without statistically significant group differences in post hoc analyses. No significant correlation was found between tremor severity and functional mobility.

    Conclusions:

    • Individuals with essential tremor exhibit compromised functional mobility.
    • Head tremor in ET is associated with greater deficits in functional mobility and balance confidence.
    • These findings underscore the functional impact of ET and suggest a need for interventions addressing mobility impairments.