{
  "resourceType": "ActivityDefinition",
  "id": "ankle-dorsiflexion-plantarflexion-band",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/ankle-dorsiflexion-plantarflexion-band",
  "version": "1",
  "name": "AnkleDorsiflexionPlantarflexionBand",
  "title": "Ankle Dorsiflexion/Plantarflexion (Resistance Band)",
  "status": "draft",
  "experimental": true,
  "description": "Seated resisted ankle exercises. Dorsiflexion: band anchored forward, pull foot up. Plantarflexion: band around foot, push foot down. Restores ROM and strength after ankle injury. Limited dorsiflexion decreases ankle stability during landing and gait.",
  "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": "ankle-dorsiflexion-plantarflexion-band",
          "display": "Ankle Dorsiflexion/Plantarflexion (Resistance Band)"
        }
      ]
    }
  ],
  "bodySite": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "ankle",
          "display": "Ankle"
        },
        {
          "system": "http://snomed.info/sct",
          "code": "70258002",
          "display": "Structure of ankle joint"
        }
      ],
      "text": "Ankle"
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "3×15 reps each direction, daily during acute recovery"
    }
  ],
  "usage": "Evidence: moderate.",
  "note": [
    {
      "text": "Quiet shin, isolated ankle — only the foot moves",
      "authorString": "focus:internal"
    },
    {
      "text": "Pull the toes toward the shin against the band",
      "authorString": "focus:external"
    },
    {
      "text": "Push the ball of the foot into a gas pedal",
      "authorString": "focus:external"
    },
    {
      "text": "Free hand on the calf to keep it relaxed",
      "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"
      }
    },
    {
      "type": "citation",
      "label": "wu-ankle-sprain-2025",
      "citation": "Wu V, Padilla CA, Smith NA. (2025). Management of Acute Ankle Sprains: Common Questions and Answers"
    },
    {
      "type": "citation",
      "label": "aafp-ankle-recovery-2025",
      "citation": "American Academy of Family Physicians. (2025). Recovering From an Ankle Sprain"
    },
    {
      "type": "successor",
      "label": "Adequate seated band strength and pain-free ROM; progress from seated open-chain to standing weight-bearing heel raises (band exercise's stated progression).",
      "display": "Heel Raise (Calf Raise)",
      "resource": "ActivityDefinition/heel-raise"
    }
  ],
  "extension": [
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Tibialis Anterior"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "73508007"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Gastrocnemius"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "35616000"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Soleus"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "78376008"
          }
        }
      ]
    }
  ]
}