The Physioball Shoulders I's is an activation and motor-control exercise used to improve shoulder stability and scapular muscle recruitment. Performed in a prone position on a physioball, it promotes coordinated activation of the lower trapezius, rhomboids, posterior deltoid and other scapular stabilizers, helping improve shoulder girdle control and movement quality. This exercise is commonly included in activation, injury-prevention and upper-body movement preparation routines. Due to its low external load and high demand for postural control, it serves as an effective preparation exercise before pressing, pulling and overhead training activities.
It can be classified as an exercise belonging to the Shoulder Care category.