On the shape of the force-velocity relationship in skeletal muscles: The linear, the hyperbolic, and the double-hyperbolic

J Alcazar, R Csapo, I Ara, LM Alegre - Frontiers in physiology, 2019 - frontiersin.org
The shape of the force-velocity (FV) relationship has important implications for different
aspects of muscle physiology, such as muscle efficiency and fatigue, the understanding of …

Physics of muscle contraction

M Caruel, L Truskinovsky - Reports on Progress in Physics, 2018 - iopscience.iop.org
In this paper we report, clarify and broaden various recent efforts to complement the
chemistry-centered models of force generation in (skeletal) muscles by mechanics-centered …

Multistep orthophosphate release tunes actomyosin energy transduction

L Moretto, M Ušaj, O Matusovsky, DE Rassier… - Nature …, 2022 - nature.com
Muscle contraction and a range of critical cellular functions rely on force-producing
interactions between myosin motors and actin filaments, powered by turnover of adenosine …

Mechanical coupling between myosin molecules causes differences between ensemble and single-molecule measurements

S Walcott, DM Warshaw, EP Debold - Biophysical journal, 2012 - cell.com
In contracting muscle, individual myosin molecules function as part of a large ensemble,
hydrolyzing ATP to power the relative sliding of actin filaments. The technological advances …

Isoforms confer characteristic force generation and mechanosensation by myosin II filaments

S Stam, J Alberts, ML Gardel, E Munro - Biophysical journal, 2015 - cell.com
Myosin II isoforms with varying mechanochemistry and filament size interact with filamentous
actin (F-actin) arrays to generate contractile forces in muscle and nonmuscle cells. How …

Mechanisms of myosin II force generation: insights from novel experimental techniques and approaches

DE Rassier, A Månsson - Physiological Reviews, 2025 - journals.physiology.org
Myosin II is a molecular motor that converts chemical energy derived from ATP hydrolysis
into mechanical work. Myosin II isoforms are responsible for muscle contraction and a range …

Active force generation in cardiac muscle cells: mathematical modeling and numerical simulation of the actin-myosin interaction

F Regazzoni, L Dedè, A Quarteroni - Vietnam Journal of Mathematics, 2021 - Springer
Cardiac in silico numerical simulations are based on mathematical models describing the
physical processes involved in the heart function. In this review paper, we critically survey …

Hill's equation of muscle performance and its hidden insight on molecular mechanisms

CY Seow - Journal of General Physiology, 2013 - rupress.org
Muscles shorten faster against light loads than they do against heavy loads. The hyperbolic
equation first used by AV Hill over seven decades ago to illustrate the relationship between …

Critical evaluation of current hypotheses for the pathogenesis of hypertrophic cardiomyopathy

M Ušaj, L Moretto, A Månsson - International Journal of Molecular …, 2022 - mdpi.com
Hereditary hypertrophic cardiomyopathy (HCM), due to mutations in sarcomere proteins,
occurs in more than 1/500 individuals and is the leading cause of sudden cardiac death in …

Poorly understood aspects of striated muscle contraction

A Månsson, D Rassier… - BioMed Research …, 2015 - Wiley Online Library
Muscle contraction results from cyclic interactions between the contractile proteins myosin
and actin, driven by the turnover of adenosine triphosphate (ATP). Despite intense studies …