Which factor is likely to enhance joint range of motion?

Regular stretching exercises are known to enhance joint range of motion because they promote flexibility in the muscles and tendons surrounding the joints. Stretching increases the elasticity of these structures, allowing for greater movement at the joint itself. This practice helps maintain and improve the length of the muscle fibers, promoting a wider range of motion while reducing the risk of injury or stiffness.

Moreover, engaging in consistent stretching can lead to adaptations in the connective tissues, making them more compliant and responsive to movement. In addition to improving flexibility, stretching exercises can also enhance blood circulation to the muscles and connective tissues, further supporting their function and health.

In contrast, factors like prolonged inactivity, aging, and high-intensity weight lifting may lead to reduced flexibility or stiffness in the joints. For instance, prolonged inactivity can result in tightness and decreased motion due to the lack of movement and the body's adaptation to a sedentary state. Aging naturally leads to changes in connective tissue, such as decreased elasticity, which can also limit movement. High-intensity weight lifting, while beneficial for muscle strength, can sometimes cause tightness in the muscles if not balanced with adequate stretching, further limiting joint range of motion.