What does the U-position in a backward arch require from the lifted skater?

The U-position in a backward arch necessitates a strong bend or arch of the back from the lifted skater. This position is crucial for achieving balance and control during the lift, as the curvature of the spine helps create a stable base and enables the lifted skater to maintain their body alignment throughout the maneuver. The strong arch provides not just aesthetic appeal but also functional support, allowing the lifted skater to display flexibility and strength while being carried.

In this context, the core muscles must engage to maintain stability and ensure safety during the lift, which does not align with the idea of lacking core engagement. Support from the hips and shoulders alone may not provide the necessary balance required for a fluid motion in the U-position, as it would ignore the importance of the back's role in maintaining proper posture. Finally, while keeping the legs straight can be a characteristic of some movements, the focus of the U-position is primarily on the arch of the back rather than strict leg positioning. Thus, the emphasis on a strong bend or arch of the back is essential for successful execution in this lift.