{
  "$schema": "https://openexercise.org/schema/v0/exercise.json",
  "aliases": [
    {
      "text": "Tyler Twist",
      "kind": "common"
    },
    {
      "text": "TheraBand Tyler Twist",
      "kind": "brand"
    },
    {
      "text": "TheraBand FlexBar Tyler Twist",
      "kind": "brand"
    }
  ],
  "anatomy": {
    "muscles": [
      {
        "muscle": "forearm-extensors",
        "role": "prime-mover"
      },
      {
        "muscle": "brachioradialis",
        "role": "synergist"
      },
      {
        "muscle": "forearm-flexors",
        "role": "stabilizer"
      },
      {
        "muscle": "hand-intrinsics",
        "role": "stabilizer"
      }
    ],
    "joints": [
      {
        "joint": "wrist",
        "actions": [
          "extension"
        ]
      },
      {
        "joint": "elbow",
        "actions": [
          "isometric-stabilization"
        ]
      },
      {
        "joint": "glenohumeral",
        "actions": [
          "isometric-stabilization"
        ]
      }
    ]
  },
  "classification": {
    "modalities": [
      "rehabilitation",
      "strength"
    ],
    "movement_patterns": [
      "isolation-grip"
    ],
    "mechanics": "isolation",
    "force": "pull",
    "kinetic_chain": "open",
    "laterality": "unilateral",
    "planes": [
      "sagittal"
    ],
    "contraction": [
      "eccentric-emphasis",
      "dynamic"
    ],
    "level": "beginner"
  },
  "equipment": {
    "required": [
      [
        "resistance-band"
      ]
    ]
  },
  "external_ids": {
    "wger": "2638"
  },
  "id": "oec:flexbar-tyler-twist",
  "instructions": {
    "setup": [
      "Stand upright holding the lower end of the flexible resistance bar vertically in the hand of the affected arm.",
      "Fully extend the wrist of the affected arm while maintaining a secure grip on the base of the bar.",
      "Grasp the top end of the bar with your unaffected hand, facing that palm away from you."
    ],
    "steps": [
      "Twist the top of the bar forward with the unaffected hand to wind up tension while maintaining wrist extension on the affected side.",
      "Extend both arms out in front of your chest so the bar is held horizontally at shoulder height, keeping the twist locked in.",
      "Slowly allow the affected wrist to untwist into flexion under control over three to four seconds while keeping the unaffected hand stationary.",
      "Release tension, return to the vertical starting position, and reset for the next repetition."
    ],
    "breathing": "Breathe steadily throughout the movement, exhaling as you slowly release tension during the eccentric phase.",
    "cues": [
      "Twist with the healthy hand, resist with the injured wrist",
      "Slow untwist over four full seconds",
      "Keep elbows extended out front"
    ],
    "common_faults": [
      {
        "fault": "Letting the bar snap back quickly instead of controlling the eccentric phase",
        "correction": "Slow the release down to a deliberate three to four-second count to maximize eccentric tendon loading."
      },
      {
        "fault": "Actively flexing the wrist during the loading phase instead of pre-extending it",
        "correction": "Fully extend the affected wrist before twisting the bar so the muscle only works eccentrically."
      }
    ],
    "safety": {
      "precautions": [
        "Mild discomfort is expected during rehabilitation, but stop immediately if you experience sharp or escalating pain."
      ],
      "spotter": "not-needed"
    }
  },
  "measurement": {
    "load": {
      "convention": "not-applicable",
      "kind": "elastic"
    },
    "profiles": [
      {
        "required": [
          "reps"
        ],
        "optional": [
          "band-tension",
          "tempo",
          "rpe"
        ]
      }
    ],
    "records": {},
    "reps_counted": "per-side"
  },
  "name": "FlexBar Tyler Twist",
  "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: FlexBar Tyler Twist",
        "url": "https://wger.de/en/exercise/2638/view-base",
        "license": "CC-BY-SA-4.0",
        "author": "trs1800"
      }
    ]
  },
  "relations": [
    {
      "type": "variation-of",
      "target": "oec:resistance-bar-wrist-extension"
    },
    {
      "type": "substitute-for",
      "target": "oec:dumbbell-wrist-extension"
    }
  ],
  "setup": {
    "position": "standing",
    "stance": {
      "kind": "parallel",
      "width": "hip"
    }
  },
  "status": "active",
  "summary": "An eccentric wrist extensor exercise performed with a flexible rubber resistance bar, primarily used to rehabilitate lateral epicondylitis."
}