Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon...

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Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) Properties of muscle-tendon function - Extensibility and elasticity • Elastic and contractile components - Irritability and the ability to develop tension Structural Org of Skeletal Muscle Motor Unit

Transcript of Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon...

Page 1: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.

Biomechanics of Skeletal Muscle(Hamill ch 4, Cram Ch 2,

pp 43-64) Properties of muscle-tendon function

- Extensibility and elasticity• Elastic and contractile components

- Irritability and the ability to develop tension Structural Org of Skeletal Muscle Motor Unit

Page 2: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 3: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 4: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.

Biomechanics of Skeletal Muscle The motor unit and Electromyography (Figure from

lab)- motoneuron & all innervated fibers- Fiber types I (SO), IIA (FOG), IIB (FG)

Muscle Fiber Type Selective recruitment of fiber types – size

principle:• SO FOG FG

Page 5: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.

Recruitment proceeds from smallest fibers to largest (the size principle)

Page 6: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.

Muscle Fiber Types

Page 7: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 8: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 9: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 10: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 11: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 12: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 13: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 14: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 15: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 16: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 17: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 18: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 19: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.
Page 20: Biomechanics of Skeletal Muscle (Hamill ch 4, Cram Ch 2, pp 43-64) n Properties of muscle-tendon function -Extensibility and elasticity Elastic and contractile.

Methodology article:DeLuca, Carlo J. (1997) The use of surface Electromyography in biomechanics. J Appl Biomech, 19:135-163.

Review Article:Morrish, G. (1999) Surface electromyographyMethods of analysis, reliability, and main applicationsPhysical and Rehabilitation Medicine, 11:171-205.

EMG website assignment: EMG Tutorials and Whitepapers


Cardiovascular System Block Contractile Mechanism in Cardiac Muscle (Physiology )

Cardiovascular System Block Contractile Mechanism in Cardiac Muscle (Physiology )

MUSCLE TISSUE. CLASSIFICATION OF MUSCLE Muscular tissue is classified on the basis of the appearance of the contractile cells Smooth muscle Striated.

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Muscle is classified into three types: skeletal, cardiac, and smooth muscle Muscle cells possess contractile filaments containing actin and myosin.

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