{
  "resourceType": "ActivityDefinition",
  "id": "vor-x1-gaze-stabilization",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/vor-x1-gaze-stabilization",
  "version": "1",
  "name": "VorX1GazeStabilization",
  "title": "Gaze Stabilization — VOR ×1",
  "status": "draft",
  "experimental": true,
  "description": "Fixate a stationary target at arm's length while rotating the head side-to-side, then up-and-down, at a pace where the target stays in focus. Foundational vestibular adaptation drill.",
  "useContext": [
    {
      "code": {
        "system": "http://terminology.hl7.org/CodeSystem/usage-context-type",
        "code": "user"
      },
      "valueCodeableConcept": {
        "text": "difficulty: beginner"
      }
    }
  ],
  "topic": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "vor-x1-gaze-stabilization",
          "display": "Gaze Stabilization — VOR ×1"
        }
      ]
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "20–30 minutes/day total, split across 4–5 sessions (ANPT/APTA guideline)."
    }
  ],
  "usage": "Evidence: strong.",
  "note": [
    {
      "text": "Keep the target in clear focus throughout the head movement"
    },
    {
      "text": "Increase head speed only as long as the target stays sharp"
    },
    {
      "text": "If dizziness builds, slow down and shorten duration — do not push through"
    }
  ]
}