ProSwing Metric Calibration: Time-to-Contact and On-Plane Distance
ProSwing App Metric: ProSwing Composite Score, TTC, On-Plane Distance
How the move works
The camera closes the loop. You film a clean set, you read the skeleton overlay, and you tie each number to one body move. TTC answers speed. On-Plane Distance answers depth.
You adjust side-tilt angle for plane and swivel timing for speed. One change per set. The Swing Score confirms the change with Control, Sequence, Speed, Path, and Finish reads.
Youth cue: Film, look, fix one thing
You film five cuts. You watch the stick figure with a parent. You pick one fix for the next five. Small fixes add up fast.
High school and college read
You read TTC, On-Plane Distance, Mass Centroid, and hip-shoulder separation in one pass. You target TTC under 0.15 seconds with plane entry 8 to 12 inches behind the body. Poor video quality lowers confidence in the numbers, never the scoring method.
Parent and coach setup
You run the same tripod spot every session. You keep sessions to 5-swing blocks. You save one baseline clip per week so progress shows on the same angle.
Step-by-Step Execution
- Mount the phone: You mount your smartphone on a tripod at waist level, side-profile view (open side of hitter).
- Film five: You record 5 dry or tee swings emphasizing rear-hip anchor and early barrel entry.
- Read the overlay: You upload video to the ProSwing app and you review skeleton overlay tracking for Mass Centroid and On-Plane Depth.
- Tune two levers: You adjust rear shoulder side-tilt angle and top-hand swivel timing to lift your overall ProSwing score.
Common Mistakes and Fixes
| Flaw | HLP Fix |
|---|---|
| Camera films from behind or too high | You set the tripod at waist level, side-profile, open side of the hitter. |
| Hitter changes three things between clips | You change one variable per set: side-tilt angle or swivel timing. |
| TTC reads long, path reads short | You add side-tilt first and you re-check On-Plane Distance before touching the hands. |
| Low frame rate blurs contact | You switch the phone to its highest frame rate and you re-shoot the set. |
ProSwing App Callout
You process each clip in ProSwing Studio in your phone browser. Client-side processing keeps video on your device. You compare TTC and On-Plane Distance set over set. You lock the setup that pairs your best TTC with your deepest clean plane entry, then you drill that setup for two weeks.