TY - JOUR

T1 - Portfolio theory of optimal isometric force production: Variability predictions and nonequilibrium fluctuation-dissipation theorem

AU - Frank, T.D.

AU - Patanarapeelert, K.

AU - Beek, P.J.

PY - 2008

Y1 - 2008

N2 - We derive a fundamental relationship between the mean and the variability of isometric force. The relationship arises from an optimal collection of active motor units such that the force variability assumes a minimum (optimal isometric force). The relationship is shown to be independent of the explicit motor unit properties and of the dynamical features of isometric force production. A constant coefficient of variation in the asymptotic regime and a nonequilibrium fluctuation-dissipation theorem for optimal isometric force are predicted. © 2008 Elsevier B.V. All rights reserved.

AB - We derive a fundamental relationship between the mean and the variability of isometric force. The relationship arises from an optimal collection of active motor units such that the force variability assumes a minimum (optimal isometric force). The relationship is shown to be independent of the explicit motor unit properties and of the dynamical features of isometric force production. A constant coefficient of variation in the asymptotic regime and a nonequilibrium fluctuation-dissipation theorem for optimal isometric force are predicted. © 2008 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.physleta.2008.02.031

DO - 10.1016/j.physleta.2008.02.031

M3 - Article

VL - 372

SP - 3562

EP - 3568

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

SN - 0375-9601

ER -