{
  "schema_version": "1.0",
  "author": "bhartiben-patel",
  "location": "Houston, TX (29.76° N, 95.36° W)",
  "model": {
    "name": "ACSM_Running_VO2_Equation_Adapted",
    "source": "American College of Sports Medicine Guidelines (2009)",
    "formula": "VO2_ml_kg_min = (0.2 * S_m_per_min) + (0.9 * S_m_per_min * G_slope) + 3.5_resting_baseline",
    "constants": {
      "resting_vo2": 3.5,
      "horizontal_cost_coefficient": 0.2,
      "vertical_cost_coefficient": 0.9,
      "oxygen_caloric_equivalent": 5.0
    },
    "environmental_modifiers": {
      "dry_sea_level": 0.02,
      "gulf_coast_dawn": 0.05,
      "summer_peak": 0.08
    },
    "glycogen_efficiency_states": {
      "baseline_trained": 12,
      "elite_adaptation": 15,
      "supercompensation": 18
    }
  },
  "validation": {
    "test_case": {
      "mass_kg": 68,
      "distance_km": 16.09,
      "pace_min_per_km": 5.0,
      "expected_velocity_m_per_min": 200,
      "humidity_factor": 0.05,
      "efficiency_state": 15
    }
  }
}