BOSU Balls

The preferred alternative to unstable-surface drills is controlled loading, velocity, and task-specific joint control. Unstable surfaces are not presented as reliable stability or proprioception training tools. An unstable surface may confuse somatosensory input without training controlled joint position under meaningful load. Hypermobile clients who struggle with joint control may not benefit from devices that make proprioceptive information less reliable. The article rejects BOSU balls for people with Ehlers-Danlos syndrome.