{ "foot_landing": { "foot_strike": { "arm_mean_angle": 109, "back_leg_mean_angle": 66.413, "front_leg_mean_angle": 139, "head_mean_angle": -5, "trunk_mean_angle": 2 }, "mean_foot_strike_pattern": "midfoot", "steps": [ { "foot_under_center_of_mass": true, "footstrike_pattern": "forefoot", "frame_timestamp": 175, "landing_end_frame_id": 3, "landing_leg": "left", "landing_start_frame_id": 2 }, { "foot_under_center_of_mass": false, "footstrike_pattern": "forefoot", "frame_timestamp": 475, "landing_end_frame_id": 6, "landing_leg": "left", "landing_start_frame_id": 5 }, { "foot_under_center_of_mass": false, "footstrike_pattern": "midfoot", "frame_timestamp": 2510, "landing_end_frame_id": 50, "landing_leg": "right", "landing_start_frame_id": 49 } ], "toe_off": { "stride_angle": { "left": 3.267, "right": 1.366 } } }, "frames": { "1": { "angles": { "head": -20, "left_ankle": 152, "left_elbow": 150, "left_knee": 153, "right_ankle": 145, "right_elbow": 87, "right_knee": 139, "trunk": 6 }, "center_of_mass": { "x": 346.354, "y": 60.109, "z": 0 } } }, "metrics": { "duty_factor_percent": 0.196, "ground_contact_time_second": 0.122, "pace_min_per_km": 4.25, "speed_meter_per_second": 3.774, "step_frequency_steps_per_min": 238, "step_length_meter": 0.948, "time_of_flight_second": 0.498 }, "overstride": { "mean_angle": 4.07, "score": "score_good" } }