{
  "schema": "NEXT11_EXERCISE_VIDEO_MANIFEST_V1",
  "exerciseId": "atg-split-squat-lunges",
  "title": "Lunges / ATG split squats",
  "source": {
    "file": "source/NEXT11_dynamic_warmup_ijj7TD0DA6Q_atg-split-squat-lunges.mov",
    "sha256": "a67ca601ee4dbe090b707312a80b44d37b69e1379cc5d515f3692b70d6ddfc4c",
    "durationSec": 8.975011,
    "youtubeId": "ijj7TD0DA6Q"
  },
  "playback": {
    "file": "atg-split-squat-lunges.mp4",
    "sha256": "d938c82cd036db4bdeefe86fd0f8a72b41ba4850ecd8e3319241490990941eeb",
    "durationSec": 8.975011
  },
  "animationTiming": {
    "durationSec": 7.0,
    "method": "source-measured periodic two-lunge loop; neutral anchor 2.50 s, right peak 4.25 s, next neutral 6.00 s, left peak 7.75 s; final neutral inferred from measured 7.0 s same-side period",
    "sourceAnchorSec": 2.5,
    "sourceSameSidePeakPeriodSec": 7.0
  },
  "updatedAt": "2026-09-06"
}