ENS 401A Lecture Notes - Lecture 2: Fascia, Tissue Hydration, Tensegrity
19 Feb 2017
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Document Summary
Terminology review: muscle action at joints movement: Application review: muscle roles in movement: Key structural differences: knee: longer levers (men) = greater leverage and speed (speed = stride length x frequency) More scientific training methods = reduced performance gap. Key structural differences: shoulder: men have broader shoulders to support muscle tissue, women have lower concentrations of testosterone receptors in upper extremity (ue) vs. men. Outcome: absolute strength is 52% and 66% of men in ue and le, Main structural protein within various connective tissues in animals. Makes up 25-35% of whole-body protein content, but only 1-2, up to 6% of muscle tissue. Strong relatively inelastic fibers (cross-weave pattern) that provide support, shape, and stability (stiffness and rigidity: elastin. Exist as bundles of highly elastic protein in connective tissue. Fibers can stretch to 150% of resting length allows tissues to resume shape after stretching or contracting. Provide dynamic flexibility (elasticity) and the ability to absorb / harness mechanical energy: fibroblasts.
