National Academy of Sports Medicine (NASM) Certified Personal Trainer (CPT) Practice Exam

What term describes the alteration of muscle length surrounding a joint?

1. Muscles

2. Muscle Imbalance

3. Core Stability

4. Joint Mobilization

The correct answer is: Muscle Imbalance

The alteration of muscle length surrounding a joint is best described by the term "Muscle Imbalance." Muscle imbalances occur when the length or strength of muscles around a joint is uneven, leading to one set of muscles being tighter or stronger than their opposing muscle group. This can affect joint function, movement patterns, and overall biomechanical efficiency. For example, if the muscles on one side of a joint (like the quadriceps) are significantly stronger or tighter than the opposing muscles (like the hamstrings), it can cause improper movement and may lead to injuries or dysfunction. Recognizing and addressing muscle imbalances is crucial for effective training and rehabilitation. Other terms, like core stability, refer specifically to the strength and control of the muscles that stabilize the torso and pelvis, while joint mobilization is a technique used in physical therapy and rehabilitation to improve joint movement. However, neither directly pertains to the concept of muscle length alteration surrounding a joint as effectively as muscle imbalance does.