Modified Muscle Fatigue Model to Enhance the Simulation of Intermittent Short-Duration High-Intensity Exercises

EasyChair Preprint 13323

Abstract

For activities with high-intensity demands where muscle fatigue and the loss of muscle force are anticipated, the integration of muscle fatigue models with muscle force and load-sharing paradigms becomes increasingly important. In a recent work, the authors integrated multi-level models to account for redundant muscle forces within a multibody environment, along with the three-compartment controller (3CC) muscle fatigue model. While their results provided reasonable estimates, they observed that the 3CC model did not accurately capture the expected force decay during the training session, thus suggesting that the activity could be sustained indefinitely. This observation appears to be unrealistic and contradicts findings from other muscle fatigue studies. In this study, to enhance the simulation of intermittent short-duration high-intensity exercises, the authors opted for modifying the 3CC muscle fatigue model. Specifically, they introduced a four-compartment model that distinguishes between the short-term fatigued state (corresponding to metabolic inhibition) and the long-term fatigued state (simulating central fatigue and potential microtraumas).

Keyphrases: Sport Performance, injury prevention, muscle fatigue model, muscle force, musculotendon model

@booklet{EasyChair:13323,
  author    = {Florian Michaud and Santiago Beron and Urbano Lugrís and Manuel Giráldez and Javier Cuadrado},
  title     = {Modified Muscle Fatigue Model to Enhance the Simulation of Intermittent Short-Duration High-Intensity Exercises},
  howpublished = {EasyChair Preprint 13323},
  year      = {EasyChair, 2024}}