increase in tendon stiffness (stiffer tendons allow muscles to shorten at slower speeds, and therefore exert more force), (2) increases in the number of lateral attachments between the muscle fiber and its surrounding collagen layer (this increases the amount of force that is transmitted laterally, but reduces the effective fiber length), and (3) increases in muscle size at specific regions of the muscle (this increases the ability of the muscle to produce force at certain, specific joint angles).
