Gtech 2023¶

DocumentationValidation

Overview¶

Short Code: GT23
Year: 2023
Institution: Epic Lab

Georgia Tech 2023 dataset containing comprehensive biomechanical data from able-bodied adults performing multiple locomotion tasks including level walking, incline/decline walking, stair ascent/descent, sit-to-stand, stand-to-sit, squats, jumps, lunges, cutting, side shuffle, and various agility drills. Data collected using motion capture and force plates.

Downloads¶

Download Clean Dataset Download Full Dataset (Dirty)

Dataset Information¶

Subjects and Tasks¶

Number of Subjects: 12
Tasks Included: Agility Drill, Cutting, Decline Walking, Incline Walking, Jump, Level Walking, Sit To Stand, Squat, Stair Ascent, Stair Descent, Stand To Sit, Step Down, Step Up, Walk Backward

Subject Metadata¶

The table below summarizes the subject_metadata key:value pairs per subject.

Subject	weight_kg
GT23_AB01	78.85
GT23_AB02	82.18
GT23_AB03	82.18
GT23_AB05	71.54
GT23_AB06	79.11
GT23_AB07	62.26
GT23_AB08	87.61
GT23_AB09	84.10
GT23_AB10	67.52
GT23_AB11	65.08
GT23_AB12	64.03
GT23_AB13	67.57

Task Catalog¶

Task	Task ID	Task Info
agility_drill	dynamic_walk	variant:butt-kicks,treadmill:true
		variant:high-knees,treadmill:true
	lunges	experiment:gtech_2023
		variant:left
	side_shuffle	experiment:gtech_2023
cutting	cutting	direction:left,speed:fast,variant:left-fast
		direction:left,speed:slow,variant:left-slow
		direction:right,speed:fast,variant:right-fast
decline_walking	decline_10deg	incline_deg:-10,treadmill:true
	decline_5deg	incline_deg:-5,treadmill:true
incline_walking	incline_10deg	incline_deg:10,treadmill:true
	incline_5deg	incline_deg:5,treadmill:true
jump	jump	experiment:gtech_2023
		jump_type:forward_backward
		jump_type:hop
		jump_type:turn_180
level_walking	level	speed_m_s:0.6,treadmill:true
		speed_m_s:1.2,treadmill:true
		speed_m_s:1.8,treadmill:true
		speed_m_s:2.0,treadmill:true
		speed_m_s:2.5,treadmill:true
sit_to_stand	sit_to_stand	segmentation:grf_based
squat	squat	weight_kg:0.0
		weight_kg:11.3
stair_ascent	stair_ascent	step_number:1,height_m:0.15
		step_number:11,height_m:0.15
		step_number:3,height_m:0.15
stair_descent	stair_descent	step_number:10,height_m:0.15
		step_number:2,height_m:0.15
stand_to_sit	stand_to_sit	segmentation:grf_based
step_down	step_down	height_m:0.15
step_up	step_up	height_m:0.15
walk_backward	walk_backward	speed_m_s:0.6,treadmill:true
		speed_m_s:0.8,treadmill:true
		speed_m_s:1.0,treadmill:true

Feature Availability by Task¶

✔Complete≈Partial✖Missing

Coverage computed from gtech_2023_phase_clean.parquet.

Ground Reaction Forces¶

Feature	Agility Drill	Cutting	Decline Walking	Incline Walking	Jump	Level Walking	Sit To Stand	Squat	Stair Ascent	Stair Descent	Stand To Sit	Step Down	Step Up	Walk Backward
`grf_anterior_contra_BW`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`grf_anterior_ipsi_BW`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`grf_lateral_contra_BW`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`grf_lateral_ipsi_BW`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`grf_vertical_contra_BW`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`grf_vertical_ipsi_BW`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔

Joint Angles¶

Feature	Agility Drill	Cutting	Decline Walking	Incline Walking	Jump	Level Walking	Sit To Stand	Squat	Stair Ascent	Stair Descent	Stand To Sit	Step Down	Step Up	Walk Backward
`ankle_dorsiflexion_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`ankle_dorsiflexion_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_frontal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_frontal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_sagittal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_sagittal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_transverse_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`foot_transverse_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`hip_flexion_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`hip_flexion_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`knee_flexion_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`knee_flexion_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`pelvis_frontal_angle_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`pelvis_sagittal_angle_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`pelvis_transverse_angle_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_frontal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_frontal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_sagittal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_sagittal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_transverse_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`shank_transverse_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_frontal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_frontal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_sagittal_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_sagittal_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_transverse_angle_contra_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`thigh_transverse_angle_ipsi_rad`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔

Joint Moments¶

Feature	Agility Drill	Cutting	Decline Walking	Incline Walking	Jump	Level Walking	Sit To Stand	Squat	Stair Ascent	Stair Descent	Stand To Sit	Step Down	Step Up	Walk Backward
`ankle_dorsiflexion_moment_contra_Nm_kg`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`ankle_dorsiflexion_moment_ipsi_Nm_kg`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`hip_flexion_moment_contra_Nm_kg`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`hip_flexion_moment_ipsi_Nm_kg`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`knee_flexion_moment_contra_Nm_kg`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`knee_flexion_moment_ipsi_Nm_kg`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔

Joint Velocities¶

Feature	Agility Drill	Cutting	Decline Walking	Incline Walking	Jump	Level Walking	Sit To Stand	Squat	Stair Ascent	Stair Descent	Stand To Sit	Step Down	Step Up	Walk Backward
`ankle_dorsiflexion_velocity_contra_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`ankle_dorsiflexion_velocity_ipsi_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`hip_flexion_velocity_contra_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`hip_flexion_velocity_ipsi_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`knee_flexion_velocity_contra_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`knee_flexion_velocity_ipsi_rad_s`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔

Other Features¶

Feature	Agility Drill	Cutting	Decline Walking	Incline Walking	Jump	Level Walking	Sit To Stand	Squat	Stair Ascent	Stair Descent	Stand To Sit	Step Down	Step Up	Walk Backward
`cop_anterior_contra_m`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`cop_anterior_ipsi_m`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`cop_lateral_contra_m`	≈ 34.10	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	≈ 81.20	≈ 75.80	✖
`cop_lateral_ipsi_m`	≈ 97.20	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`cop_vertical_contra_m`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔
`cop_vertical_ipsi_m`	✔	✖	✖	✖	✔	✖	✔	✔	✖	✖	✔	✔	✔	✔

Data Structure¶

Format: Phase-normalized (150 points per gait cycle)
Sampling: Phase-indexed from 0-100%
Variables: Standard biomechanical naming convention

Validation Snapshot¶

Status: ❌ Needs Review (2.6%)
Stride Pass Rate: 2.6%
Validation Ranges: Download validation ranges (source: contributor_tools/validation_ranges/default_ranges.yaml)
Detailed Report: View validation report

Citation¶

Please cite appropriately when using this dataset.

Collection Details¶

Protocol¶

Standard motion capture protocol was used.

Processing Notes¶

No additional notes.

Files Included¶

gtech_2023_phase_raw.parquet — Phase-normalized dataset
Validation report
Conversion script in contributor_tools/conversion_scripts/gt23/

Generated by Dataset Submission Tool on 2026-01-09 10:02

Report generated: 2026-01-09 10:02

Status Summary¶

Metric	Value
Stride Pass Rate	2.6%
Total Strides	2215
Passing Strides	58

Summary¶

Status: ❌ NEEDS REVIEW (2.6% valid)
Total Strides: 2215
Passing Strides: 58

Task Breakdown¶

Task	Pass Rate	Status
Agility Drill	100.0%	✅
Cutting	0.0%	❌
Decline Walking	0.0%	❌
Incline Walking	0.0%	❌
Jump	1.3%	❌
Level Walking	0.0%	❌
Sit To Stand	9.5%	❌
Squat	1.5%	❌
Stair Ascent	0.0%	❌
Stair Descent	0.0%	❌
Stand To Sit	3.9%	❌
Step Down	100.0%	✅
Step Up	100.0%	✅
Walk Backward	100.0%	✅

Validation ranges snapshot embedded below.

⚠️ Note: Validation ranges represent established biomechanical norms from literature. Pass rates indicate conformance to these norms—lower rates may reflect special populations, non-standard protocols, or task-specific differences. See the validation interpretation guide for details.