| datetime |
datetime |
Datetime in timezone where data was collected. |
2020-01-01 12:00:00 |
| subject_id |
string |
Unique identifier for the subject. |
SUB_2DK, 001 |
| timedelta |
timedelta |
Time since last fix. |
0 days 00:00:15 |
| wear |
boolean |
Devices worn or not. |
True, False |
| vertical_counts |
float |
Vertical counts. |
214 |
| horizontal_counts |
float |
Horizontal counts. |
34 |
| perpendicular_counts |
float |
Perpendicular counts. |
134 |
| vm_counts |
float |
Vector magnitude counts. |
234 |
| movement |
string |
Bodily movement defined by anatomy and biomechanics. |
Left arm flexion, Right arm extension |
| action |
string |
Process of doing something, typically to achieve an aim or purpose |
Walking, Running, Sitting |
| activity |
string |
Activities of daily life: a thing that a person does or has done (HETUS categories) |
nan |
| activity_intensity |
string |
Intensity of activity |
nan |
| activity_value |
float |
Vendor specific activity value (metric). Maybe it should be normalized (0-100), based on the vendor |
nan |
| steps |
float |
Steps since last fix. |
nan |