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Technical Details

  • Variable Type: Movement Flag
  • Data Type: Integer
  • Units: N/A
  • Column Name: sway
  • Optimal Direction: Lower is better
  • Unknown Value: -1
  • Measurement: Mid-pelvis X position, between P1 Address and P7 Impact
  • Threshold: Pelvis X position drops more than 10 cm (0.1 m) below its Address value at any point

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Description

Sway flags a golfer whose pelvis shifts laterally away from the target during the backswing rather than rotating around a stable base. The magnitude of the lateral shift is reported separately by the Pelvis Sway Range metric.

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Use Cases

  • Lower body stability analysis
  • Swing consistency coaching