Contrast-Impulse Cryo-Therapy (CIK): Technical Note

This technical note provides a concise overview of the Contrast-Impulse Cryo-Therapy (CIK) method, a fast, practical recovery technique developed for sports medicine and rehabilitation. The document summarizes the mechanism of action, indications, contraindications, clinical steps of the protocol, and potential applications in athletic recovery. The CIK method combines brief contrast cooling, short impulse cryo-stimulation, and a finishing sweeping phase to reduce local tension, improve comfort, and support functional readiness without interrupting training. This technical note is designed for clinicians, sports therapists, physiotherapists, and medical specialists who work in real-world training or competition environments. Note:An earlier technical note describing the conceptual basis of Contrast-Impulse Cryo-Therapy (CIK) was made available as a preprint on Zenodo. The concept was subsequently developed into a substantially expanded, peer-reviewed narrative review.