The Stability - Mobility Model describes the body as alternating segments of what?

• A. Stable and Mobile Joints
• B. Strong and Weak Muscles
• C. Fast and Slow Fibers
• D. Rigid and Flexible Joints

Answer: (A)

Movement relies on balancing stability and mobility across body segments. In this model, some joints stay stable to provide a solid base for support and alignment, while the next segments are allowed to move freely to enable action. This alternating pattern lets force transfer efficiently and helps maintain balance during dynamic tasks. The phrase stable and mobile joints fits this idea best because it captures how parts of the body are kept steady while adjacent parts are free to move. The other options describe muscles, fiber types, or an entirely rigid system, which don’t describe how stability and mobility are organized together in this model.