Final answer:
Static stability in a deadlift is found in the shoulders, arms, and upper body, while dynamic stability is observed in the movement of the hips, knees, and ankles. Stability improvements occur with a lower center of gravity and a wider base of support, both key aspects in deadlifting.
Step-by-step explanation:
During a deadlift, static stability is required in the shoulders, arms, and upper body as these areas maintain a consistent position to support the weight. In contrast, dynamic stability involves the hips, knees, and ankles as they move and adjust to perform the lifting motion while maintaining balance and control. The concept of stability is closely tied to one's center of gravity; by spreading the feet apart and lowering the center of gravity, as in bending the knees, stability is enhanced. This is a central nervous system function developed since infancy for balance and coordination. In the context of deadlifting, balancing the body against forward and backward displacements is critical.