A pro's swing generates force from the ground and transfers it through 5 body segments in 250ms. The average amateur leaks 40% of that energy through poor sequencing. Now you can see exactly where.
GROUND REACTION FORCE
Force starts at the ground. Leg muscles push into the turf, creating ground reaction force. That force travels up through a precise sequence of muscle activations — the kinetic chain.
ENERGY TRANSFER
Like cracking a whip — each segment accelerates, peaks, then decelerates while the next segment picks up the energy. The timing gaps between peaks are 20-50ms. Invisible to human perception. Measurable by our sensors.
Sequential peaks → Maximum energy transfer
Overlapping peaks → Energy leaks at every segment
HOW WE MEASURE
4 IMU sensors track angular velocity at each segment. 4 EMG sensors measure muscle activation intensity. Together, they map both the HOW and the WHY of your energy transfer chain.
Sensor Placement — Following the Energy Path
IMU Positions
Lumbar L4
Pelvis rotation — chain origin
Thoracic T1
Torso rotation — energy amplifier
Dorsal Forearm
Arm speed — lag measurement
3rd Metacarpal
Terminal speed — club release
EMG Positions (Right-handed)
Vastus Lateralis — L. Leg
Ground push ~30-35%
Gluteus Maximus — Left
Hip rotation ~25-30%
External Oblique — Left
Core rotation ~20-25%
Latissimus Dorsi — Right
Arm pull ~15-20%
Map the exact energy path from ground to club. See where it breaks. Fix it with AI-guided training.
No credit card required · Full kinetic chain mapping · Ships Q3 2026