What role do deltoids play in the rowing preps?

The deltoids play a crucial role in stabilizing the arms at a constant height during the rowing preps in Stott Pilates. This stabilization is essential for maintaining proper alignment and posture throughout the exercise, allowing for effective movement patterns that engage the core and upper body muscles properly. By keeping the arms steady, the deltoids help prevent excessive swinging or misalignment which could lead to ineffective movements or potential injury. This stability is vital, as it ensures that the focus remains on the desired muscle engagement and the smooth execution of the rowing motion, preserving the integrity of the exercise.