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

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.