Swing Analytics (Sportsbox-style positional metric).
What it measures
SportsBox Chest Lift @ IMP—vertical chest translation versus Address at Impact; stacks with Chest Side Bend @ IMP for torso posture narratives.
Units: inches
Why it matters
Elevated IMP lift often parallels standing up/out of inclination—pair Pelvis Lift + Thrust IMP when exported.
When the number looks wrong or noisy
Soft indoor mats change vertical references—annotate surface type in Swing Insights logs.