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A global view on how local muscular fatigue affects human performance
Márcio F Goethel1,2,3, Mauro Gonçalves4, Cayque Brietzke5,6
1Laboratory of Physical Activity Sciences, School of Arts, Sciences, and Humanities, University of São Paulo, 03828-000 São Paulo, Brazil; gbiomech@gmail.com.
Summary
Local hip abductor muscle fatigue significantly impacts overall functional profiles during tasks like squatting and single-leg landings. This highlights the interconnectedness of the body's control systems.
Area of Science:
- Biomechanics and Motor Control
- Computational Neuroscience
Background:
- Investigating inter-regional influences of interventions is a growing area of scientific interest.
- Understanding how local impairments affect global function requires multivariate models accounting for complex interactions.
Purpose of the Study:
- To develop and apply an artificial neural network (ANN)-based multivariate model.
- To assess the impact of local hip abductor muscle fatigue on functional profiles during dynamic tasks.
Main Methods:
- Utilized kinematic, postural control, joint torque, and proprioception variables.
- Employed an ANN to model motor skill parameters.
- Assessed functional changes during single-leg drop landing and squatting tasks.
Main Results:
- Local fatigue in hip abductor muscles significantly altered the general functional profile.
- The findings demonstrate effects across different integrated control systems.
Conclusions:
- Local muscle fatigue has widespread effects on global functional performance.
- Expanded, global modeling approaches offer ecological validity for future research.
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