What aspect of mobility does stiffness most significantly affect?

Stiffness primarily affects the range of motion in a person's joints and muscles. When stiffness occurs, movements become limited, as the joints may not bend or extend fully, ultimately hindering mobility. This restricted range of motion can result from various conditions, such as arthritis or injury, and directly impacts a person's physical ability to perform daily activities and maintain independence. Effective assessments and interventions in mobility focus on improving the range of motion, which can alleviate stiffness and enhance overall mobility. The range of motion is crucial for effective movement patterns and maintaining physical function, making it the aspect most significantly influenced by stiffness.