{
  "resourceType": "ActivityDefinition",
  "id": "open-book-stretch",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/open-book-stretch",
  "version": "1",
  "name": "OpenBookStretch",
  "title": "Open Book Stretch (Thoracic Rotation)",
  "status": "draft",
  "experimental": true,
  "description": "Sidelying with hips and knees at 90°, rotating top arm and thorax open toward ceiling. Thoracic rotation ROM averages 10-12° per segment (T1-T10) and 7-8° in lower thoracic. Emphasizes thoracic rotation while stabilizing pelvis.",
  "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": "open-book-stretch",
          "display": "Open Book Stretch (Thoracic Rotation)"
        }
      ]
    }
  ],
  "bodySite": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "thoracic-spine",
          "display": "Thoracic Spine"
        },
        {
          "system": "http://snomed.info/sct",
          "code": "5261000",
          "display": "Structure of thoracic intervertebral disc"
        }
      ],
      "text": "Thoracic Spine"
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "2-4 reps of 30-60 seconds per side, 5-7 days/week [Thomas 2018]"
    }
  ],
  "usage": "Evidence: moderate.",
  "note": [
    {
      "text": "Quiet hips, low breath — rotation lives in the mid-back",
      "authorString": "focus:internal"
    },
    {
      "text": "Reach the top hand toward the floor behind you",
      "authorString": "focus:external"
    },
    {
      "text": "Eyes follow the moving hand across the room",
      "authorString": "focus:external"
    },
    {
      "text": "Knees glued together — they anchor the pelvis",
      "authorString": "focus:tactile"
    }
  ],
  "relatedArtifact": [
    {
      "type": "citation",
      "label": "kisner-therapeutic-2017",
      "citation": "Kisner C, Colby LA, Borstad J. (2017). Therapeutic Exercise: Foundations and Techniques"
    },
    {
      "type": "citation",
      "label": "acsm-guidelines-2021",
      "citation": "American College of Sports Medicine. (2021). ACSM's Guidelines for Exercise Testing and Prescription",
      "document": {
        "url": "https://doi.org/10.4135/9781412994149.n165"
      }
    }
  ],
  "extension": [
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Internal Oblique"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "1179024003"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "External Oblique"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "1179024003"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Erector Spinae Group"
        },
        {
          "url": "role",
          "valueCode": "stabilizer"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "44947003"
          }
        }
      ]
    }
  ]
}