Chapter 4 Stretching Biology

Question 1

Effects of immobilization

Answer 1

• Collagen turnover
• weak bonding in new non stressed fibers (Dec. (-) Stiffness)
• ^cross-linking between disorganized collagen fibers and - effectiveness of the ground substance in maiming space and lubrications between the fibers , resulting in adhesion formation

Question 2

Effects of Inactivity (Decrease of Normal Activity)

Answer 2

• Decreases the size
• Dec. the amount
• =Weak Tissue
• Dec Collagen= ^in Elastin fibers= ^in tissue comp.
• Recovery= 5 months w reg. Cyclic loading

Question 3

Effects of Age

Answer 3

• Dec. max tensile strength and
• Dec. stiffness of tissue
• Rate of adaption is slower (Movement)
• ^ tendency for overuse syndromes
• fatigue failures
• tears with stretching