Motion Capture Data (.bvh) and Coordinate 3D (.c3d) File Structure

This database includes the structure and organization of .c3d and .bvh files collected by İzmir Institute of Technology Biomechanics Lab. This structure has been designed in accordance with the FAIR principles (Findable, Accessible, Interoperable, Reusable).

## File Naming

The options listed below contain an explanation of the abbreviations used in file naming.

1) S####_G_A_B_T_P

2) The first option has a naming template. The abbreviations are explained as follows:
- S#### : Number of participants based on the dataset, eg. S0001,
- G : Gender, eg. M(Male), F(Female),
- A : Age at the time of experiment, eg. A21
- B : Subject body mass index (BMI), eg. B23
- T : Abbreviated task name, for example SJD (Süjud)
- P : Motion capture system, eg. Q (Qualisys), S (Smartsuit)

3) Activity abbreviations are as follows.

- Gait: Walking
- OBC: Obstacle Crossing
- STL: Stoop Lifting
- SQL: Squat Lifting
- AST: Asian Stly Sitting
- TUG: Timed Up and Go
- CHT: Chair Transfer
- CYC: Cycling
- RAI: Ruku' and Itidal
- RTS: Ruku to Sujud
- SJD: Sujud
- ACS: Ascending Stair 
- DCS: Descending Stair
- CLS: Cross-legged Stitting

## Data Format and Standard

Data were recorded in file formats containing three-dimensional coordinate data commonly used in biomechanics and motion capture systems.

- Files with the .c3d extension contain the 3D coordinate data of the markers placed on the anatomical points and the force data of the volunteers.

SGL: Glabulla
R_HEAD: Right ear upper
L_HEAD: Upper left ear
CV7: Cervical Vertebrae
TV10: Thoracoc Vertebrae
L_SIA: Left Scapula-Inferior
R_SIA: Right Scapula-Inferior
L_SAE: Left Scapula-Acromial Edge
L_HUM: Left Humerus Center
L_HLE: Left Humerus-Lateral Epicondyle
L_RSP: Left Radius-Styloid Process
L_USP: Left Ulna-Styloid Process
L_HM2: Left Index Finger
R_SAE: Right Scapula-Acromial Edge
R_HUM: Right Humerus Center
R_HLE: Right Humerus-Lateral Epicondyle
R_RSP: Right Radius-Styloid Process
R_USP: Right Ulna-Styloid Process
R_HM2: Right Index Finger
L_IAS: Left Anterior Superior Illiac Spine
L_IPS: Left Posterior Superior Illiac Spine
R_IAS: Right Anterior Superior Illiac Spine
R_IPS: Right Posterior Superior Illiac Spine
L_TH1: Left Femur Center
L_TH2: Left Femur Center
L_TH3: Left Femur Center
L_TH4: Left Femur Center
L_FLE: Left Lateral Epicondyle
L_FME: Left Medial Epicondyle
L_SK1: Left Tibia Center
L_SK2: Left Tibia Center
L_SK3: Left Tibia Center
L_SK4: Left Tibia Center
L_FAL: Left Lateral Prominence of Lateral Malleoulus
L_TAM: Left Medial Prominence of Medial Malleoulus
L_FCC: Left Calcaneus
L_FM1: Left First Metatarsal Head
L_FM2: Left Second Metatarsal Head
L_FM5: Left Fifth Metatarsal Head
R_TH1: Right Femur Center
R_TH2: Right Femur Center
R_TH3: Right Femur Center
R_TH4: Right Femur Center
R_FLE: Right Lateral Epicondyle
R_FME: Right Medial Epicondyle
R_SK1: Right Tibia Center
R_SK2: Right Tibia Center
R_SK3: Right Tibia Center
R_SK4: Right Tibia Center
R_FAL: Right Lateral Prominence of Lateral Malleoulus
R_TAM: Right Medial Prominence of Medial Malleoulus
R_FCC: Right Calcaneus
R_FM1: Right First Metatarsal Head
R_FM2: Right Second Metatarsal Head
R_FM5: Right Fifth Metatarsal Head

- Files with .bvh extension contain orientation and position information of the following limbs.
 
neck
Head
Spine1
Spine2
Spine3
Spine4
LeftThigh
LeftShin
LeftFoot
LeftToe
RightThigh
RightShin
RightFoot
RightToe
LeftShoulder
LeftArm
LeftForeArm
LeftHand
LeftFinger1Metacarpal
LeftFinger1Proximal
LeftFinger1Distal
LeftFinger2Metacarpal
LeftFinger2Proximal
LeftFinger2Medial
LeftFinger2Distal
LeftFinger3Metacarpal
LeftFinger3Proximal
LeftFinger3Medial
LeftFinger3Distal
LeftFinger4Metacarpal
LeftFinger4Proximal
LeftFinger4Medial
LeftFinger4Distal
LeftFinger5Metacarpal
LeftFinger5Proximal
LeftFinger5Medial
LeftFinger5Distal
RightShoulder
RightArm
RightForeArm
RightHand
RightFinger1Metacarpal
RightFinger1Proximal
RightFinger1Distal
RightFinger2Metacarpal
RightFinger2Proximal
RightFinger2Medial
RightFinger2Distal
RightFinger3Metacarpal
RightFinger3Proximal
RightFinger3Medial
RightFinger3Distal
RightFinger4Metacarpal
RightFinger4Proximal
RightFinger4Medial
RightFinger4Distal
RightFinger5Metacarpal
RightFinger5Proximal
RightFinger5Medial
RightFinger5Distal

## Contact and Support

For your questions, feedback or support requests, please contact İzmir Institute of Technology Biomechanics Lab. contact:

- E-mail: biomechlab@iyte.edu.tr
- Address: Gülbahçe, İzmir Institute of Technology, 35430 Urla/İzmir