{
  "schemaVersion": "1.0.0",
  "exerciseSlug": "standing-calf-raise",
  "assetId": "standing-calf-raise-preview-shaos-v3",
  "role": "preview",
  "status": "approved",
  "version": "v3.0.0",
  "reviewedAt": "2026-09-02",
  "source": {
    "canonicalArtwork": "/assets/exercises/standing-calf-raise/anatomy.webp",
    "sha256": "36222527af47c882108b3cd10bed1f053318c1e457ab67f358cfc110219cf6cd"
  },
  "production": {
    "method": "Eleven registered pose levels derived from the canonical ShaOS anatomy illustration with local Apple Vision interpolation, arranged into a 22-state standard-tempo seamless loop.",
    "registration": "The platform and supporting foot remain fixed across every state; the full step and both athlete panels remain inside the frame.",
    "tempoProfile": "One-second bottom stretch, two-second controlled rise, one-second top squeeze, and three-second controlled lowering.",
    "highlightCue": "Illustrative ShaOS activation cue; not an EMG measurement.",
    "highlightLegend": {
      "scheme": "primary-secondary",
      "primary": { "label": "Primary muscles", "color": "#D97706", "muscles": ["Calves"] },
      "secondary": { "label": "Secondary muscles", "color": "#8F969B", "muscles": [] }
    },
    "orangeIntensity": [0.36, 0.4, 0.44, 0.52, 0.6, 0.68, 0.78, 0.84, 0.92, 0.96, 1.0, 1.0, 0.96, 0.92, 0.84, 0.78, 0.68, 0.6, 0.52, 0.44, 0.4, 0.36],
    "principle": "Maintain a visible bottom-stretch baseline, build through plantar flexion, peak at the top contraction, then ease during the controlled return."
  },
  "playback": {
    "width": 720,
    "height": 720,
    "durationSeconds": 7,
    "frameRate": 20,
    "muted": true,
    "loop": true
  },
  "files": {
    "preview": {
      "path": "preview.mp4",
      "mimeType": "video/mp4",
      "bytes": 527016,
      "sha256": "a56c210523666ac1b7628278b11a70fb8aa0e2f25740077d31ec496d53262195"
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    "poster": {
      "path": "poster.webp",
      "mimeType": "image/webp",
      "bytes": 30970,
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}