{
  "$schema": "https://openexercise.org/schema/v0/exercise.json",
  "aliases": [
    {
      "text": "Seated Knee Extension Stretch",
      "kind": "common"
    },
    {
      "text": "Heel Prop Knee Extension",
      "kind": "common"
    },
    {
      "text": "Knee Extension with Overpressure",
      "kind": "common"
    }
  ],
  "anatomy": {
    "muscles": [
      {
        "muscle": "hamstrings",
        "role": "stretched"
      },
      {
        "muscle": "gastrocnemius",
        "role": "stretched"
      }
    ],
    "joints": [
      {
        "joint": "knee",
        "actions": [
          "extension"
        ]
      }
    ]
  },
  "classification": {
    "modalities": [
      "rehabilitation",
      "mobility",
      "flexibility"
    ],
    "movement_patterns": [
      "stretch",
      "mobility-drill"
    ],
    "mechanics": "isolation",
    "force": "static",
    "kinetic_chain": "open",
    "laterality": "unilateral",
    "planes": [
      "sagittal"
    ],
    "contraction": [
      "isometric"
    ],
    "level": "beginner"
  },
  "equipment": {
    "optional": [
      "chair",
      "bench",
      "foam-roller",
      "yoga-block"
    ],
    "required": []
  },
  "external_ids": {
    "wger": "2664"
  },
  "id": "oec:seated-knee-extension-with-overpressure",
  "instructions": {
    "setup": [
      "Sit upright on a firm chair or on the floor.",
      "Extend the target leg forward with the heel propped on the floor or a low support so the knee remains completely unsupported beneath."
    ],
    "steps": [
      "Completely relax the thigh and leg muscles.",
      "Place both hands flat on the lower thigh, just above the superior border of the patella.",
      "Gently press downward toward the floor, applying gradual overpressure into full knee extension until a mild stretch is felt in the back of the knee.",
      "Hold the position for the prescribed duration, then release the downward pressure."
    ],
    "breathing": "Breathe slowly and rhythmically throughout the mobilization, exhaling gently as you apply pressure.",
    "cues": [
      "Relax the thigh completely",
      "Press above the kneecap, not directly on it",
      "Gentle firm pressure, no sharp pain"
    ],
    "common_faults": [
      {
        "fault": "Pressing directly on the patella.",
        "correction": "Position the hands on the distal femur just above the kneecap to avoid compressing the patellofemoral joint."
      },
      {
        "fault": "Tensing the quadriceps or hamstrings defensively.",
        "correction": "Allow the leg to hang completely passive so the joint capsule and posterior soft tissues receive the stretch."
      },
      {
        "fault": "Applying sudden, ballistic force into terminal extension.",
        "correction": "Apply smooth, sustained overpressure to prevent muscle guarding or joint irritation."
      }
    ],
    "safety": {
      "precautions": [
        "Do not force through sharp, pinch-type pain in the anterior joint line.",
        "Follow post-operative range-of-motion guidelines if rehabilitating a ligament reconstruction or joint replacement."
      ],
      "spotter": "not-needed"
    }
  },
  "measurement": {
    "duration_counted": "per-side",
    "load": {
      "convention": "not-applicable",
      "kind": "none"
    },
    "profiles": [
      {
        "required": [
          "reps",
          "duration"
        ]
      },
      {
        "required": [
          "duration"
        ]
      }
    ],
    "records": {},
    "reps_counted": "per-side"
  },
  "name": "Seated Knee Extension with Overpressure",
  "provenance": {
    "generated": [
      "/name",
      "/summary",
      "/classification",
      "/anatomy",
      "/equipment",
      "/measurement",
      "/instructions",
      "/setup"
    ],
    "license": "CC-BY-SA-4.0",
    "review": {
      "status": "machine-generated",
      "model": "gemini-3.8-flash",
      "at": "2026-10-31"
    },
    "sources": [
      {
        "title": "wger: Seated Knee Extension with Overpressure",
        "url": "https://wger.de/en/exercise/2664/view-base",
        "license": "CC-BY-SA-4.0",
        "author": "trs1800"
      }
    ]
  },
  "setup": {
    "position": "seated"
  },
  "status": "active",
  "summary": "A seated rehabilitation stretch that applies manual overpressure above the knee to restore terminal knee extension."
}