1. Mathematical modeling of exercise fatigability in the severe domain: A unifying integrative framework in isokinetic condition.
- Author
-
Bowen M, Samozino P, Vonderscher M, Dutykh D, and Morel B
- Subjects
- Muscles physiology, Models, Theoretical, Muscle, Skeletal physiology, Exercise physiology, Muscle Fatigue
- Abstract
Muscle fatigue is the decay in the ability of muscles to generate force, and results from neural and metabolic perturbations. This article presents an integrative mathematical model that describes the decrease in maximal force capacity (i.e. fatigue) over exercises performed at intensities above the critical force F
c (i.e. severe domain). The model unifies the previous Critical Power Model and All-Out Model and can be applied to any exercise described by a changing force F over time. The assumptions of the model are (i) isokinetic conditions, an intensity domain of Fc c , and τ, (iii) fatigability proportional to the accumulation of impulse J AC above the critical force Fc . The present study adjusted the parameters to fit previous experimental observations from three types of exercises: constant intensity, all-out, and increasing ramp exercise. This integrative model establishes a connection between the previous individual models and provides an excellent description of exercise fatigability in the severe domain. With this new integrative model, the maximal force production of the muscle can be predicted over time during both maximal and submaximal exercises., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2024
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