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Updated: May 24, 2025

A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation

A Human-machine-interface Integrating Low-cost Sensors with a Neuromuscular Electrical Stimulation System for Post-stroke Balance Rehabilitation

Published on: April 12, 2016

One-Leg Standing: Right and Left Balance COP and EMG Analyses.

Leia B Bagesteiro, Liana E Brown

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|March 5, 2025

Summary

This summary is machine-generated.

This study on one-leg balance found that postural control is less stable with eyes closed. Asymmetries were observed, with the left leg showing greater center of pressure variability and muscle activity than the right leg.

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Area of Science:

Biomechanics
Neuroscience
Human Motor Control

Background:

Manual asymmetries in motor control have been studied for over a century, primarily focusing on upper limb movements.
Aging populations face increased risks of falls due to gait and balance disorders, highlighting the need to understand balance control mechanisms.

Purpose of the Study:

To investigate lateralization control mechanisms in one-leg balance.
To analyze center of pressure (COP) distribution and variability, and muscle activity during single-leg and double-leg stance.

Main Methods:

109 right-hand dominant individuals performed single-leg and double-leg stance on a force platform under eyes-open and eyes-closed conditions.
Center of pressure (COP) data were analyzed for distribution and variability.
Electromyography (EMG) of four lower leg muscles was recorded in 15 participants.

Main Results:

Postural stability, indicated by COP distribution and variability and muscle activity, was reduced in eyes-closed conditions.
Significant asymmetries in postural control were found, with the left leg exhibiting greater COP variability (anterior-posterior and medial-lateral) and higher EMG activity compared to the right leg during single-leg stance.

Conclusions:

Lateralization in postural control exists, with differences observed between the left and right leg during single-leg balance.
Future research will explore these lateralization differences in aging and impaired populations.