Which equipment is NOT commonly used for enhancing proprioceptive demand in functional training?

The bench press machine is not commonly used for enhancing proprioceptive demand in functional training because it provides a stable and fixed movement pattern. Proprioception involves the body's ability to sense its position in space and make adjustments accordingly. Equipment that enhances proprioceptive demand typically requires the user to engage in more dynamic and unstable movements, which challenge the body's balance and coordination.

Physioballs and foam rollers, for example, create an unstable surface that forces the body to engage more stabilizing muscles and improve awareness of body position. Similarly, cables allow for multi-directional movement and can challenge balance and stability depending on how they are used. In contrast, the bench press machine supports the back and arms, allowing for a more controlled and predictable movement, which does not enhance proprioceptive skills. Thus, while it can be beneficial for strength training, it does not meet the criteria for enhancing proprioceptive demand in the same way the other equipment does.