A three-compartment muscle fatigue model accurately predicts joint-specific maximum endurance times for sustained isometric tasks.

ABSTRACT: The development of localized muscle fatigue has classically been described by the nonlinear intensity-endurance time (ET) curve (Rohmert, 1960; El Ahrache et al., 2006). These empirical intensity-ET relationships have been well-documented and vary between joint regions. We previously proposed a three-compartment biophysical fatigue model, consisting of compartments (i.e. states) for active (M(A)), fatigued (M(F)), and resting (M(R)) muscles, to predict the decay and recovery of muscle force (Xia and Frey Law, 2008). The purpose of this investigation was to determine optimal model parameter values, fatigue (F) and recovery (R), which define the "flow rate" between muscle states and to evaluate the model's accuracy for estimating expected intensity-ET curves. Using a grid-search approach wit

SUBMITTER: Frey-Law LA 

PROVIDER: S-EPMC3397684 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature