Neuromuscular control of ankle and hip during performance of the star excursion balance test in subjects with and without chronic ankle instability

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SCIENCE
Neuromuscular control of ankle and hip during performance of the star excursion balance test in subjects with and without chronic ankle instability
Key Take-Away: 

The ankle joint is the most affected joint in sports activities. Patients with acute lateral ankle sprain found to have altered postural control which is essential to do all motor tasks. These study results affirm that implementing hip and ankle muscle exercises in the rehabilitation of ankle instability benefits the patients.

Introduction
Ankle sprains are one of the frequently occurred disabling musculoskeletal injuries following by chronic ankle instability (CAI). CAI is known to be associated with postural and neuromuscular control impairments; but, inconsistent findings have been inscribed. The patients with lateral ankle sprain without having any instability (copers) may accommodate diverse neuromuscular control approaches after the injury: the study intended to compare electromyographic (EMG) activity and postural control of ankle and hip muscles throughout the administration of the Star Excursion Balance Test (SEBT) in patients with and without CAI.

 

Method
A total of 48 patients were selected and categorised into three classes; copers, CAI and controls (16 each) by Cumberland Ankle Instability Tool score and ankle sprain history. The centre of pressure (COP), normalised reach distance, and the integrated EMG activation of tibialis anterior (TA), gluteus maximus (Gmax), peroneus longus (PL), and gluteus medius (Gmed) during each reach direction of SEBT were considered as the analysis outcomes.

 

Results
The CAI group exhibited considerably less EMG activity of TA during the anterior direction, Gmax in the posterolateral direction and diminished postural control than controls and copers.

 

Conclusion
The quality of movement and postural control appears to be negatively affected by the alterations in distal and proximal muscle activity following prolonged functional impairments. Consequently, implementing ankle and hip muscle exercises in the restoration of ankle instability might help these patients.

Source:

PLoS One

Link to the source:

https://www.ncbi.nlm.nih.gov/pubmed/30102713

Original title of article:

Neuromuscular control of ankle and hip during performance of the star excursion balance test in subjects with and without chronic ankle instability

Authors:

Hatem Jaber et al.

Therapeutic, Ankle Sprains, Ankle, SEBT

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