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Related Experiment Video

Updated: Dec 12, 2025

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

Postural stability during visual-based cognitive and motor dual-tasks after ACLR.

Sarah C Miko¹, Janet E Simon², Scott M Monfort³

¹Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Grover Center, Athens, OH, United States.

Journal of Science and Medicine in Sport

|August 11, 2020

Summary

Individuals with anterior cruciate ligament reconstruction show impaired postural stability, especially during dual-tasking. This highlights potential neural processing deficits that persist after surgery, impacting balance.

Keywords:

ACL Motor control Return to sport

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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

Published on: December 11, 2013

Area of Science:

Biomechanics
Neuroscience
Orthopedics

Background:

Anterior cruciate ligament (ACL) reconstruction is a common orthopedic procedure.
Postural stability deficits can persist after ACL reconstruction, affecting functional outcomes.
Dual-tasking paradigms are used to assess sensorimotor and cognitive integration in balance.

Purpose of the Study:

To investigate the impact of visual-motor and visual-cognitive dual-tasking on postural stability in individuals with ACL reconstruction compared to healthy controls.
To identify specific balance deficits related to dual-tasking conditions in the ACL reconstruction population.

Main Methods:

A cohort study design comparing 14 individuals with ACL reconstruction to 14 matched healthy controls.
Participants performed single-leg balance tasks under four conditions: eyes-open, eyes-closed, dual-motor (catching a ball), and dual-cognitive (recalling numbers).
Center of pressure measures (ellipse area, root-mean-squared excursion) were analyzed using mixed-effects models to assess group and condition effects.

Main Results:

A significant interaction between group and balance condition was found for ellipse area and medial-lateral root-mean-squared excursion.
The ACL reconstruction group exhibited significantly greater postural instability (larger ellipse area and excursion) compared to controls, particularly under dual-cognitive conditions.

Conclusions:

Postural stability is significantly compromised in individuals with ACL reconstruction, especially during dual-tasking scenarios.
The findings suggest persistent neural processing deficits in the ACL reconstruction group, particularly during cognitive-motor integration, impacting balance control.