{
  "$schema": "https://openexercise.org/schema/v0/exercise.json",
  "aliases": [
    {
      "text": "TRX Oblique Crunch",
      "kind": "brand"
    },
    {
      "text": "TRX Obliques",
      "kind": "brand"
    },
    {
      "text": "Suspension Trainer Oblique Knee Tuck",
      "kind": "common"
    },
    {
      "text": "TRX Knee Tuck to Elbow",
      "kind": "common"
    }
  ],
  "anatomy": {
    "muscles": [
      {
        "muscle": "external-oblique",
        "role": "prime-mover"
      },
      {
        "muscle": "internal-oblique",
        "role": "prime-mover"
      },
      {
        "muscle": "rectus-abdominis",
        "role": "prime-mover"
      },
      {
        "muscle": "iliopsoas",
        "role": "synergist"
      },
      {
        "muscle": "tensor-fasciae-latae",
        "role": "synergist"
      },
      {
        "muscle": "serratus-anterior",
        "role": "stabilizer"
      },
      {
        "muscle": "deltoid-anterior",
        "role": "stabilizer"
      },
      {
        "muscle": "transversus-abdominis",
        "role": "stabilizer"
      }
    ],
    "joints": [
      {
        "joint": "lumbar-spine",
        "actions": [
          "flexion",
          "rotation"
        ]
      },
      {
        "joint": "hip",
        "actions": [
          "flexion",
          "extension"
        ]
      },
      {
        "joint": "knee",
        "actions": [
          "flexion",
          "extension"
        ]
      },
      {
        "joint": "scapulothoracic",
        "actions": [
          "protraction",
          "isometric-stabilization"
        ]
      },
      {
        "joint": "glenohumeral",
        "actions": [
          "isometric-stabilization"
        ]
      }
    ]
  },
  "classification": {
    "modalities": [
      "calisthenics",
      "strength"
    ],
    "movement_patterns": [
      "rotation",
      "spinal-flexion"
    ],
    "mechanics": "compound",
    "force": "pull",
    "kinetic_chain": "closed",
    "laterality": "alternating",
    "planes": [
      "transverse",
      "sagittal"
    ],
    "contraction": [
      "dynamic"
    ],
    "level": "intermediate"
  },
  "equipment": {
    "optional": [
      "mat"
    ],
    "required": [
      [
        "suspension-trainer"
      ]
    ]
  },
  "external_ids": {
    "wger": "1259"
  },
  "id": "oec:suspension-trainer-oblique-crunch",
  "instructions": {
    "setup": [
      "Adjust the suspension trainer foot cradles to mid-calf height.",
      "Place your feet in the cradles, toes pointing down, and assume a rigid high-plank position with your hands stacked directly under your shoulders.",
      "Engage your glutes and core to establish a flat, neutral spine from head to heels."
    ],
    "steps": [
      "Keeping your feet pressed together, bend your knees and pull them diagonally forward toward the outside of your right elbow.",
      "Pause momentarily at the peak contraction, squeezing your obliques.",
      "Extend your legs in a controlled manner back to the starting center plank position without letting your hips sag.",
      "Repeat the movement by pulling your knees diagonally toward your left elbow, alternating sides each repetition."
    ],
    "breathing": "Exhale forcefully as you drive your knees toward your elbow; inhale as you smoothly extend back into the neutral plank.",
    "cues": [
      "Press the floor away.",
      "Knees tight together.",
      "Drive across to the elbow.",
      "Lock out the plank each rep."
    ],
    "common_faults": [
      {
        "fault": "Sagging the hips and hyperextending the lower back upon leg extension.",
        "correction": "Reset into a solid plank every repetition by bracing your core and squeezing your glutes before starting the next tuck."
      },
      {
        "fault": "Piking the hips straight up instead of rotating and driving the knees toward the elbow.",
        "correction": "Focus on driving the knees diagonally forward across your torso rather than elevating the pelvis toward the ceiling."
      },
      {
        "fault": "Rushing through repetitions using momentum from the swinging straps.",
        "correction": "Move with deliberate control, pausing briefly at both the tucked position and the fully extended plank."
      }
    ],
    "safety": {
      "precautions": [
        "Ensure the anchor point is rated to support your bodyweight and the straps are securely fastened before mounting."
      ],
      "spotter": "not-needed"
    }
  },
  "measurement": {
    "load": {
      "kind": "bodyweight"
    },
    "profiles": [
      {
        "required": [
          "reps"
        ],
        "optional": [
          "rpe"
        ]
      },
      {
        "required": [
          "duration"
        ],
        "optional": [
          "reps"
        ]
      }
    ],
    "records": {},
    "reps_counted": "total"
  },
  "name": "Suspension Trainer Oblique Crunch",
  "previous_ids": [
    "oec:trx-obliques"
  ],
  "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: TRX Obliques",
        "url": "https://wger.de/en/exercise/1259/view-base",
        "license": "CC-BY-SA-4.0",
        "author": "cynomops"
      }
    ]
  },
  "relations": [
    {
      "type": "substitute-for",
      "target": "oec:captain-s-chair-oblique-knee-raise"
    }
  ],
  "setup": {
    "position": "prone",
    "range": "full",
    "stance": {
      "kind": "parallel",
      "width": "narrow"
    }
  },
  "status": "active",
  "summary": "A core exercise performed in a suspended plank position, driving both knees toward alternating elbows to target the obliques and deep abdominals."
}