With chronic resistance training, which tendon change is commonly observed?

• A. Decreased tendon stiffness.
• B. No change in tendon properties.
• C. Increased tendon stiffness.
• D. Tendon becomes more elastic with less-strength gains.

Answer: (C)

Chronic resistance training tends to increase tendon stiffness. Regular loading prompts tendon tissue to remodel: collagen production, especially type I collagen, increases and fibers align more in the direction of the force. Cross-links between collagen fibers also strengthen, making the tendon stiffer and better at transmitting the muscle’s force to bone. This adaptation supports higher loads and reduces excessive stretch under load. It’s not that elasticity disappears entirely, but the tendon becomes less compliant while still functioning within a useful elastic range. The pattern described by increased stiffness fits with how tendons adapt to ongoing resistance work, whereas the other patterns—decreased stiffness, no change, or becoming more elastic with less-strength gains—don’t align with the typical tendon response to chronic loading.