Strength training leads to structural changes in the muscles that contribute to increased strength.
- Pennation Angle: The angle at which muscle fibers attach to the tendon, known as the pennation angle, can increase with strength training. A greater pennation angle allows more muscle fibers to be packed into a given area, increasing the muscle’s ability to generate force.
- Tendon Stiffness: Strength training increases tendon stiffness, which improves the transmission of force from the muscle to the bone. This enhancement in force transfer efficiency contributes to greater strength.


