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Related Concept Videos

Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
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Related Experiment Video

Updated: Apr 27, 2026

Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
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Biofeedback in strokes.

K N Smith1

  • 1Royal Perth Rehabilitation Hospital.

The Australian Journal of Physiotherapy
|July 16, 2014
PubMed
Summary
This summary is machine-generated.

Biofeedback therapy using electromyography (EMG) showed greater improvements in upper limb function and muscle control for hemiparetic patients compared to conventional physiotherapy. This approach offers benefits for a broad range of hemiparetic individuals.

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Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Biomedical Engineering

Background:

  • Hemiparesis, often resulting from stroke, significantly impairs upper limb function and leads to muscle spasticity.
  • Conventional physiotherapy techniques have limitations in addressing severe upper limb disability in hemiparetic patients.
  • Biofeedback therapy offers a potential alternative or adjunct for improving motor control and reducing spasticity.

Purpose of the Study:

  • To compare the effectiveness of electromyograph (EMG) biofeedback therapy with conventional physiotherapy for severe upper limb hemiparesis.
  • To evaluate the impact of biofeedback on motor control and muscle relaxation in hemiparetic patients.
  • To determine the potential benefits of biofeedback therapy for a wider hemiparetic population.

Main Methods:

  • A randomized controlled trial involving eleven hemiparetic patients with severe upper limb disability.
  • Patients were randomly assigned to either an EMG biofeedback group (n=6) or a conventional physiotherapy group (n=5).
  • Outcomes were assessed through various functional and motor control assessments.

Main Results:

  • The biofeedback group demonstrated superior improvements across most assessment measures compared to the conventional physiotherapy group.
  • Patients receiving biofeedback exhibited enhanced control over upper limb movement patterns.
  • Significant improvements were observed in the relaxation of spastic muscle groups within the biofeedback cohort.

Conclusions:

  • Electromyograph biofeedback therapy is an effective treatment for improving upper limb function in hemiparetic patients.
  • Biofeedback therapy enhances motor control and spasticity management in hemiparesis.
  • A broad spectrum of hemiparetic patients may benefit from biofeedback interventions.