CASE STUDY — NATIONAL RANKED JUNIOR
A 14-year-old competitive player from Brazil presented with shoulder and forearm symptoms, calf tightness and a kinematic disconnect
Lumbar-dominant movement strategy
↓
Restricted hip mobility
↓
Upper-extremity dominant stroke production
↓
Reduced kinetic-chain efficiency
↓
Restricted movement at the set up for the stroke
↓
Serve and Groundstrokes restricted spin and velocity
Clinical movement intervention
+
Kinetic-chain re-training
+
On-court technical integration
↓
Efficient court coverage / Stroke set-Uup
↓
Serve and Groundstrokes increase in spin and velocity
↓
Lower recovery rate between the points
Hip and Leg Drive driven movement
Improved 3D Hip/Ankle Rotation
70% Reduction in Forearm Workload
+15% Serve and Groundstrokes Velocity
The case study demonstrates the central principle of the system: restore capacity, then build performance.