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

4. Biomechanics of Skeletal Muscle n The motor unit and Electromyography (Figure from lab) -motoneuron& all innervated fibers -Fiber types I (SO), IIA (FOG), IIB (FG) n Muscle Fiber Type n Selective recruitment of fiber types – size principle: SO FOG FG

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

6. Muscle Fiber Types

20. 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 electromyography Methods of analysis, reliability, and main applications Physical and Rehabilitation Medicine, 11:171-205. EMG website assignment: EMG Tutorials and Whitepapers