The Biophysics of Contraction. An Apparatus for Measuring Tensile Forces in a Muscle Muscle tendon and clamp tendon and clamp L Force Transducer.

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Presentation transcript:

The Biophysics of Contraction

An Apparatus for Measuring Tensile Forces in a Muscle Muscle tendon and clamp tendon and clamp L Force Transducer

An Ideal Elastic Material-- Compliance Plot

An Ideal Elastic Material-- Elastance Plot

More About Elastance (Stiffness) and Compliance

Non-Linear Effects

Hysteresis

The Effect of Stretching a Relaxed Muscle ("Passive Stretch")

The Effect of Stretch on a Contracting Muscle ("Active Stretch")

Calculation of Contractile Forces vs. Length

Contractile Force and Muscle Length

Explanation for Active Force vs. Length

Latent Period

Overloads on Muscles

A Mechanical Model of a Muscle

Viscous Loss

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