Technical Details
- Variable Type: Movement Flag
- Data Type: Integer
- Units: N/A
- Column Name:
loading_phase_pinpoint_break - Optimal Direction: Lower is better
- Unknown Value: -1
- Measurement: Front ankle position relative to back ankle (in the serve direction) at Low Arm
- Threshold: Front ankle is further forward than the back ankle at low arm
Description
Loading phase pinpoint break is a binary indicator that flags when a player breaks their pinpoint stance. This occurs if the back ankle (dominant side) moves forward closer to the baseline than the front ankle (non-dominant side) at the low arm event. Breaking the pinpoint position can reduce base stability during the loading phase.Use Cases
- Stance consistency assessment
- Mechanics evaluation