{
  "$schema": "https://openexercise.org/schema/v0/exercise.json",
  "aliases": [
    {
      "text": "Cross-Body Sit-Up",
      "kind": "common"
    },
    {
      "text": "Sit-Up Elbow Thrust",
      "kind": "common"
    },
    {
      "text": "Rotational Sit-Up",
      "kind": "common"
    },
    {
      "text": "Sit Up Elbow Thrust",
      "kind": "common"
    }
  ],
  "anatomy": {
    "muscles": [
      {
        "muscle": "rectus-abdominis",
        "role": "prime-mover"
      },
      {
        "muscle": "external-oblique",
        "role": "prime-mover"
      },
      {
        "muscle": "internal-oblique",
        "role": "prime-mover"
      },
      {
        "muscle": "iliopsoas",
        "role": "synergist"
      },
      {
        "muscle": "rectus-femoris",
        "role": "synergist"
      },
      {
        "muscle": "transversus-abdominis",
        "role": "stabilizer"
      }
    ],
    "joints": [
      {
        "joint": "lumbar-spine",
        "actions": [
          "flexion",
          "rotation"
        ]
      },
      {
        "joint": "thoracic-spine",
        "actions": [
          "flexion",
          "rotation"
        ]
      },
      {
        "joint": "hip",
        "actions": [
          "flexion"
        ]
      }
    ]
  },
  "classification": {
    "modalities": [
      "calisthenics"
    ],
    "movement_patterns": [
      "spinal-flexion",
      "rotation"
    ],
    "mechanics": "compound",
    "force": "not-applicable",
    "kinetic_chain": "open",
    "laterality": "alternating",
    "planes": [
      "sagittal",
      "transverse"
    ],
    "contraction": [
      "dynamic"
    ],
    "level": "beginner"
  },
  "equipment": {
    "optional": [
      "mat"
    ],
    "required": []
  },
  "external_ids": {
    "wger": "1479"
  },
  "id": "oec:twisting-sit-up",
  "instructions": {
    "setup": [
      "Lie supine on a floor or mat with knees bent and feet planted flat on the floor about hip-width apart.",
      "Place your fingertips lightly beside your ears or temples with elbows flared slightly outward, keeping your neck neutral."
    ],
    "steps": [
      "Engage your abdominals and flex your spine to raise your torso off the floor toward your knees.",
      "As your upper torso clears the floor, rotate your trunk to drive one elbow across your body toward the opposite knee.",
      "Pause momentarily at the peak of the twist with full abdominal contraction.",
      "Rotate your torso back to center as you lower yourself under control to the starting position.",
      "Repeat the movement, rotating to the opposite side on the subsequent repetition."
    ],
    "breathing": "Exhale forcefully as you sit up and twist; inhale smoothly as you lower your torso back to the floor.",
    "cues": [
      "Rotate through the ribs, not just the shoulders",
      "Curl your spine off the floor vertebra by vertebra",
      "Keep hands light against the head to avoid pulling on the neck"
    ],
    "common_faults": [
      {
        "fault": "Yanking on the cervical spine with the hands to initiate the movement.",
        "correction": "Keep fingertips light at the temples and generate the flexion strictly from your abdominal muscles."
      },
      {
        "fault": "Swinging arms or relying purely on momentum rather than muscular contraction.",
        "correction": "Perform the ascent smoothly, pausing briefly at the peak of the twist before controlling the descent."
      }
    ],
    "safety": {
      "precautions": [
        "Avoid rapid, forceful lumbar twisting if you have a history of lumbar disc pathology."
      ],
      "spotter": "not-needed"
    }
  },
  "measurement": {
    "load": {
      "kind": "bodyweight"
    },
    "profiles": [
      {
        "required": [
          "reps"
        ],
        "optional": [
          "rpe"
        ]
      }
    ],
    "records": {},
    "reps_counted": "total"
  },
  "name": "Twisting Sit-Up",
  "previous_ids": [
    "oec:sit-up-elbow-thrust"
  ],
  "provenance": {
    "generated": [
      "/name",
      "/summary",
      "/classification",
      "/anatomy",
      "/equipment",
      "/measurement",
      "/instructions",
      "/setup",
      "/relations"
    ],
    "license": "CC-BY-SA-4.0",
    "review": {
      "status": "machine-generated",
      "model": "gemini-3.8-flash",
      "at": "2026-10-31"
    },
    "sources": [
      {
        "title": "wger: Sit Up Elbow Thrust",
        "url": "https://wger.de/en/exercise/1479/view-base",
        "license": "CC-BY-SA-4.0",
        "author": "Moffi"
      }
    ]
  },
  "relations": [
    {
      "type": "variation-of",
      "target": "oec:sit-up"
    },
    {
      "type": "substitute-for",
      "target": "oec:bicycle-crunch"
    },
    {
      "type": "substitute-for",
      "target": "oec:russian-twist"
    }
  ],
  "setup": {
    "position": "supine",
    "range": "full",
    "stance": {
      "kind": "parallel",
      "width": "hip"
    }
  },
  "status": "active",
  "summary": "A dynamic sit-up variation combining spinal flexion and trunk rotation to target the abdominal wall and obliques."
}