Technical Details
- Variable Type: Event
- Data Type: Integer
- Units: Frame number
- Column Name:
p7_impact_frame - Required for QA: False
- Measurement: Minimum distance between the lead wrist and lead hip, searched between Top of Swing and Finish
- Timing: Between P6 Pre-Impact and P8 Release
- Legacy Name: Ball Contact
Description
P7 Impact approximates the instant the club strikes the ball, identified as the frame where the lead wrist is closest to the lead hip. It is the primary reference event for Downswing Duration, Follow-Through Max X-Factor, and the angle-at-impact metrics.Use Cases
- Downswing Duration calculation
- Follow-Through Max X-Factor window start
- Angle-at-impact metrics