What term describes the range of motion about a joint or the ease of joint movement?

Flexibility refers to the range of motion around a joint and the ability to move joints through their full extent. It is a critical component of physical fitness, as it affects how well a person can perform daily activities, sports, and exercises. Good flexibility helps in reducing the risk of injuries and can enhance athletic performance by allowing for more efficient movement.

In this context, strength refers to the amount of force a muscle can exert, endurance relates to the ability to sustain prolonged physical activity, and stability pertains to the ability of a joint to maintain its position or control its movements. While all of these components are important for overall fitness, none directly address the specific aspect of joint movement and range of motion like flexibility does.