Which statement characterizes steady state postural control?

• A. Non-moving, conditions changing
• B. Non-moving, conditions unchanging
• C. Active, highly variable
• D. Dynamic and adaptive

Answer: (B)

Steady state postural control involves maintaining a stable, upright posture with little net movement when the environment and task demands are constant. In this mode, the body holds a fixed position and makes only small, ongoing corrections to counter gravity, but there aren’t ongoing perturbations or large adjustments.

That’s why the best description is non-moving with conditions unchanging. When conditions stay the same, the system doesn’t need to continually adapt or respond to disturbances; it settles into a steady posture with minimal sway.

The other descriptions imply ongoing movement or continual adaptation: non-moving with changing conditions suggests perturbations requiring active adjustments; active and highly variable points to frequent, pronounced corrective movements typical of dynamic control; and dynamic and adaptive implies constant recalibration in a changing environment, again not steady state.