Fatigue effect on muscle coactivation during inversion movement in females with chronic ankle instability

Thiago T. Teruya; Alex S. O. C. Soares; Julio C. Serrão; Luis Mochizuki; Alberto C. Amadio

doi:10.20338/bjmb.v17i5.379

Fatigue effect on muscle coactivation during inversion movement in females with chronic ankle instability

Authors

Thiago T. Teruya School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil - thiago.teruya@alumni.usp.br https://orcid.org/0000-0001-9050-8163
Alex S. O. C. Soares Department of Physical Therapy, University of Taubaté, Taubaté, SP, Brazil https://orcid.org/0000-0001-9050-8163
Julio C. Serrão School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil https://orcid.org/0000-0002-3646-3387
Luis Mochizuki School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, SP, Brazil https://orcid.org/0000-0002-7550-2537
Alberto C. Amadio https://orcid.org/0000-0002-3646-3387 https://orcid.org/0000-0002-2527-2163

DOI:

https://doi.org/10.20338/bjmb.v17i5.379

Keywords:

Biomechanics, Motor control, Electromyography, Sprain, Injury, Cross-correlation

Abstract

BACKGROUND: An ankle sprain is a relevant public health issue. Fatigue changes the neuromuscular response in people with chronic ankle instability (CAI).

AIM: To evaluate the muscle co-activation on people with chronic ankle instability using cross-correlation analysis.

METHOD: Twenty-four healthy women were selected and divided into stability and instability groups. Ankle sprain was simulated with a mechanical platform. Electrical muscle activity (fibularis brevis, FB; fibularis longus, FL; gastrocnemius lateralis, GL; and tibialis anterior, TA) and platform acceleration were recorded at 2KHz. Two sets of 8 right and eight left foot fall in random order were performed before and after the fatigue protocol. Fatigue protocol ended when the volunteer increased the test run time by 150% of the best round. Co-activation was calculated with cross-correlation. Agonist-agonist (FB-FL, FB-GL, and FL-GL) and agonist-antagonist (TA-GL, TA-FB, and TA-FL) pairs were evaluated. Statistical significance was p<0.05.

RESULTS: Co-activation was lower for the instability group. Fatigue did not induce changes in 5 out of the 6 analyzed muscle pairs.

CONCLUSION: CAI is a factor of joint instability. Fatigue may not be relevant in altering joint stability. Therefore, interventions should be focused on enhancing joint stability.

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Published

2023-09-30

How to Cite

Teruya, T. T., Soares, A. S. O. C., Serrão, J. C., Mochizuki, L., & Amadio, A. C. (2023). Fatigue effect on muscle coactivation during inversion movement in females with chronic ankle instability. Brazilian Journal of Motor Behavior, 17(5), 193–200. https://doi.org/10.20338/bjmb.v17i5.379

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Issue

Vol. 17 No. 5 (2023)

Section

Special issue "Fatigue Role in Modulating Motor Skills and Muscular Responses"

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