Connecting links translate exercise arm motion into pivoting seat rotation, preventing exaggerated arcing that stresses the low back.
Interconnected four-bar linkages on a dual pivot abdominal exercise apparatus coordinate upper and lower carriage motion to replicate natural spinal curvature.
A stand-up abdominal exercise device uses adjustable knee and ankle supports to position the user for muscle strengthening.
A 3D media player overlays interactive synthetic objects onto real-world video frames using layered rendering and synchronized field of view settings.
A pivot mechanism adjusts the support platform angle to maintain neutral spine alignment, resolving posture safety issues in inclinable exercise devices.
A segmented Pilates barrel uses a detachable rocking base and non-skid ribbing to maintain stability for users of different sizes.
A balance training system calculates a reference position from foot load data to control mobile body movement.
A spherical exercise device featuring a flattened base for stable positioning and an internal cavity for secure stacking.