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Does motor imagery training improve hand function in chronic stroke patients? A pilot study.

H C Dijkerman1, M Ietswaart, M Johnston

  • 1Helmholtz Institute, Utrecht University, Heidelberglaan 2, 3584 CS Utrecht, The Netherlands. H.C.Dijkerman@fss.uu.nl

Clinical Rehabilitation
|August 6, 2004
PubMed
Summary

Motor imagery training showed modest improvements in arm function for chronic stroke survivors, specifically on practiced tasks. However, it did not significantly impact attentional or perceived control over recovery.

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Area of Science:

  • Neurorehabilitation
  • Motor Recovery
  • Stroke Rehabilitation

Background:

  • Chronic stroke often results in persistent arm motor impairments.
  • Motor imagery training (MIT) is a potential non-invasive rehabilitation strategy.
  • The impact of MIT on functional recovery and cognitive factors in stroke patients requires further investigation.

Purpose of the Study:

  • To evaluate the effectiveness of motor imagery training (MIT) for improving arm function in individuals with chronic stroke.
  • To explore the relationship between mental processes (attention, perceived control) and motor imagery in stroke recovery.

Main Methods:

  • A randomized controlled trial involving twenty chronic stroke patients with long-term motor impairments.
  • Participants were assigned to four weeks of either motor imagery training, non-motor imagery, or no mental rehearsal, alongside physical practice.

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  • Assessments included motor function tests, perceived locus of control, attention control, and activities of daily living (ADL) independence.

    • Main Results:

    • All groups demonstrated motor function improvements, except on dynamometer tests.
    • The motor imagery group showed a significantly greater improvement (14%) on the specific trained task compared to the control groups (6%).
    • No significant effects of motor imagery training were observed on perceived control or attention control.

    Conclusions:

    • Unsupervised home-based motor imagery training may enhance performance on specifically trained tasks in chronic stroke patients.
    • The study did not establish a clear link between motor imagery, attention, and perceived personal control over the recovery process.
    • Further research is needed to elucidate the cognitive mechanisms underlying motor imagery and its broader impact on stroke rehabilitation.