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Biodex© training post-stroke for postural stability in the upper trunk: A pilot study.

Helena W Nel1,2, Witness Mudzi1,3, Elizabeth C Janse van Vuuren2

  • 1Department of Physiotherapy, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.

The South African Journal of Physiotherapy
|October 26, 2020
PubMed
Summary

Biodex© upper limb weight-bearing training did not improve upper trunk postural stability in stroke survivors. Further research into exercises on moderately unstable surfaces may benefit stroke rehabilitation for better postural control.

Keywords:
Biodex©postural stabilitystroke survivorsupper limb functionupper trunk postural stability

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Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Biomechanics

Background:

  • Stroke significantly impairs upper trunk postural stability and upper limb function in most survivors.
  • Effective rehabilitation of upper limb and trunk control post-stroke remains a significant clinical challenge.
  • Upper trunk stability is crucial for upper limb function and hand dexterity.

Purpose of the Study:

  • To evaluate the impact of Biodex© upper limb weight-bearing training on upper trunk postural stability in post-stroke patients.
  • To compare the effectiveness of this specific training modality against standard care.

Main Methods:

  • A single-blinded, longitudinal randomized controlled pilot trial was conducted.
  • Participants received standard rehabilitative care, with the experimental group additionally undergoing upper limb weight-bearing training on the Biodex©.
  • Postural stability was assessed at baseline and 1 month using the Biodex© system.

Main Results:

  • No statistically significant improvements in upper trunk postural stability were observed between the experimental and control groups after 1 month of training.
  • While baseline differences existed in stability scores on a moderately unstable base of support, these did not translate to significant group differences post-intervention.
  • The Biodex© training, when added to standard care, did not yield superior outcomes compared to standard care alone.

Conclusions:

  • Biodex© upper limb weight-bearing training did not enhance upper trunk postural stability in the studied post-stroke population.
  • Findings suggest that exercises on moderately unstable bases of support may hold potential for improving postural stability in stroke survivors.
  • Current evidence indicates that adding Biodex© training to standard care does not offer additional benefits for upper trunk postural control in weight-bearing positions.