The question asks to identify the term defined by Physical Educators McCloy & Young (1954) as "agility that does not involve running". This definition points towards a specific type of physical capability related to movement and control.

Defining Dynamic Flexibility by McCloy & Young

McCloy & Young's definition focuses on agility specifically in situations where running is not the primary component. The term that best fits this description among the given options is Dynamic Flexibility.

Dynamic Flexibility refers to the ability to move a joint through its full range of motion actively and with control. It involves controlled movements, often rhythmic, that prepare muscles for activity. This contrasts with static holds. When we consider "agility that does not involve running", it implies the capacity for quick, controlled changes in body position or direction, involving a range of motion without the propulsion element of running. This aligns with the concept of actively moving limbs or the body through various ranges of motion efficiently.

Understanding the Options

Let's analyze why Dynamic Flexibility is the most appropriate answer and why the other options are less suitable:

• Dynamic Flexibility: This describes the ability to move joints smoothly and effectively through their full range of motion during physical activity. It's about active control and movement quality, which can manifest as agility in tasks not requiring locomotion like running. For example, reaching and twisting quickly or performing a controlled limb movement.

• Static Flexibility: This is the ability to hold a stretched position passively or actively for a period. It does not primarily involve agility or quickness of movement, but rather the extent of a passive stretch. Therefore, it doesn't fit the definition of "agility that does not involve running".
• Quickness: While related to agility, quickness often emphasizes the speed of initiating or executing a movement, or rapid changes in direction. However, the definition provided by McCloy & Young links agility specifically to flexibility in a non-running context. Quickness might involve agility, but Dynamic Flexibility more directly addresses the controlled range of motion aspect implied when running is excluded.
• Balance: This refers to the ability to maintain equilibrium, either statically or dynamically. While balance is crucial for many agile movements, it is not synonymous with flexibility or the specific definition provided, which focuses on agile movements excluding running.

Conclusion on Agility Without Running

Based on the definition provided by McCloy & Young (1954), Dynamic Flexibility is the capability that represents agility that does not involve running. It highlights the controlled movement through a range of motion, which is essential for performing various non-locomotive agile tasks effectively.