{
  "resourceType": "ActivityDefinition",
  "id": "rubber-band-finger-abduction",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/rubber-band-finger-abduction",
  "version": "1",
  "name": "RubberBandFingerAbduction",
  "title": "Rubber-Band Finger Abduction",
  "status": "draft",
  "experimental": true,
  "description": "Fingers abduct against an elastic band. The only intrinsic exercise with direct EMG validation for selective intrinsic activation.",
  "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": "rubber-band-finger-abduction",
          "display": "Rubber-Band Finger Abduction"
        }
      ]
    }
  ],
  "bodySite": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "hand",
          "display": "Hand"
        },
        {
          "system": "http://snomed.info/sct",
          "code": "56103003",
          "display": "Structure of collateral ligaments of metacarpophalangeal joints"
        }
      ],
      "text": "Hand"
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "10–15 reps, 3×/week (extrapolated; EMG study did not specify dosing)."
    }
  ],
  "usage": "Evidence: moderate. Significantly greater 1st DI and ADM activation vs stress-ball squeeze or baoding balls; minimized EDC substitution [Boudreau 2022].",
  "note": [
    {
      "text": "Long, straight fingers — dorsal interossei spread them apart",
      "authorString": "focus:internal"
    },
    {
      "text": "Spread the fingers wide against the band",
      "authorString": "focus:external"
    },
    {
      "text": "Hold the open shape for three seconds before releasing",
      "authorString": "focus:external"
    },
    {
      "text": "Free hand on the first web space to confirm 1st DI activation",
      "authorString": "focus:tactile"
    }
  ],
  "extension": [
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Dorsal Interossei (Hand)"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "60618007"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Abductor Digiti Minimi"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "10245000"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Extensor Digitorum"
        },
        {
          "url": "role",
          "valueCode": "stabilizer"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "50176000"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Palmar Interossei"
        },
        {
          "url": "role",
          "valueCode": "lengthening"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "85212008"
          }
        }
      ]
    }
  ]
}