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The field of muscle biophysics has changed dramatically over the past years and new studies are reshaping the way we think muscles contract. Rapidly evolving techniques and advances are allowing us to understand the mechanics of individual molecules and cells as we could never do so before. This book, a contributed volume of the work of several current opinion leaders and well-known scientists in the field, will be unique for its rich list of authors as well as its updated, comprehensive inclusion of techniques in both cell and molecular biophysiology.
Muscle contraction has been the focus of scientific investigation for more than two centuries, and major discoveries have changed the field over the years. Early in the twentieth century, Fenn (1924, 1923) showed that the total energy liberated during a contraction (heat + work) was increased when the muscle was allowed to shorten and perform work. The result implied that chemical reactions during contractions were load-dependent. The observation underlying the "Fenn effect" was taken to a greater extent when Hill (1938) published a pivotal study showing in details the relation between heat production and the amount of muscle shortening, providing investigators with the force-velocity relation for skeletal muscles. Subsequently, two papers paved the way for the current paradigm in the field of muscle contraction. Huxley and Niedergerke (1954), and Huxley and Hanson (1954) showed that the width of the A-bands did not change during muscle stretch or activation. Contraction, previously believed to be caused by shortening of muscle filaments, was associated with sliding of the thick and thin filaments. These studies were followed by the classic paper by Huxley (1957), in which he conceptualized for the first time the cross-bridge theory; filament sliding was driven by the cyclical interactions of myosin heads (cross-bridges) with actin. The original cross-bridge theory has been revised over the years but the basic features have remained mostly intact. It now influences studies performed with molecular motors responsible for tasks as diverse as muscle contraction, cell division and vesicle transport.
Muscle contraction has been the focus of scientific investigation for more than two centuries, and major discoveries have changed the field over the years. Early in the twentieth century, Fenn (1924, 1923) showed that the total energy liberated during a contraction (heat + work) was increased when the muscle was allowed to shorten and perform work. The result implied that chemical reactions during contractions were load-dependent. The observation underlying the "Fenn effect" was taken to a greater extent when Hill (1938) published a pivotal study showing in details the relation between heat production and the amount of muscle shortening, providing investigators with the force-velocity relation for skeletal muscles. Subsequently, two papers paved the way for the current paradigm in the field of muscle contraction. Huxley and Niedergerke (1954), and Huxley and Hanson (1954) showed that the width of the A-bands did not change during muscle stretch or activation. Contraction, previously believed to be caused by shortening of muscle filaments, was associated with sliding of the thick and thin filaments. These studies were followed by the classic paper by Huxley (1957), in which he conceptualized for the first time the cross-bridge theory; filament sliding was driven by the cyclical interactions of myosin heads (cross-bridges) with actin. The original cross-bridge theory has been revised over the years but the basic features have remained mostly intact. It now influences studies performed with molecular motors responsible for tasks as diverse as muscle contraction, cell division and vesicle transport.
From the reviews:
"This text is ideally suited for muscle neurophysiologists interested in doing lab research aimed to study the strength of contraction of the actinmyosin units of skeletal and cardiac myofilaments. ... This text is ideal for neurophysiologists and mycologists who have any interest in recordings. I also recommend it for those who work with muscle spindles ... ." (Joseph J. Grenier, Amazon.com, December, 2013)
"This text is ideally suited for muscle neurophysiologists interested in doing lab research aimed to study the strength of contraction of the actinmyosin units of skeletal and cardiac myofilaments. ... This text is ideal for neurophysiologists and mycologists who have any interest in recordings. I also recommend it for those who work with muscle spindles ... ." (Joseph J. Grenier, Amazon.com, December, 2013)