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Technical Details

  • Variable Type: Discrete Metric
  • Data Type: Boolean
  • Units: True/False
  • Column Name: closing_front_or_back
  • Measurement: Side-to-side trunk angle relative to pelvis
  • Threshold: Deviation > 20° from vertical between max knee raise and foot contact

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Description

Closing front/back is a binary indicator that flags excessive trunk tilt during the stride phase of the pitch. It occurs when the pitcher’s side-to-side trunk angle relative to pelvis deviates more than 20 degrees from vertical between max knee raise and foot contact events. Closing the front or back is an indicator of off axis alignment between the pelvis and trunk segments.

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Use Cases

  • Posture evaluation