Rhythmic Stabilization (RS) and Alternating Isometrics (AI) are very similar in that they both encourage stability of the trunk, hip, and shoulder girdle. The Indications for both RS and AI are the same; Impaired strength and coordination, limitations in ROM, impaired stabilization control and balance.
With both these techniques, the patient holds a weight-bearing position while the therapist applies manual resistance. No motion should occur from the patient. The patient should simply resist the therapist’s movements. For example, the patient can be in a sitting, kneeling, half-kneeling, or standing position when the therapist applies manual resistance to the shoulders. Usually, the therapist applies simultaneous resistance to the anterior left shoulder and posterior right shoulder for 2–3 seconds before switching the resistance to the posterior left shoulder and the anterior right shoulder. The therapist’s movements should be smooth, fluid, and continuous.
In AI, resistance is applied on the same side of the joint. In RS, resistance is applied on opposite sides of the joint. Note this is not a stretching technique, but instead a technique used to strengthen joint musculature and improve proprioception. The video elucidates.
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