Key result
In single cross-striated muscle fibers, dynamic stiffness varies proportionally with tension at rest and during contraction, with the proportionality factor at maximum contraction 30-90% above rest.
Population
Single cross-striated muscle fibre
Design
Preclinical
Authors
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Does not alter clinical muscle management; leaves open translation of fiber stiffness-tension relationships to intact human physiology.
In single skeletal muscle fibers, dynamic stiffness varies proportionally with tension and is influenced by initial length, stimulation strength, temperature, and fatigue.
Buchthal et al. (1944) studied Skeletal muscle contraction. Continuous registration of stiffness and tension was evaluated on Tension and dynamic stiffness. In single cross-striated muscle fibers, dynamic stiffness varies proportionally with tension at rest and during contraction, with the proportionality factor at maximum contraction 30-90% above rest.
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