Tennis

More pace. A healthier shoulder. Measured.

Racket-head speed is built from the ground up: legs to hips to torso to arm. Uplift captures that sequence in true 3D so coaches and academies can add pace and protect the shoulder. Courtside, from two iPhones.

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For coaches & academies

A motion-capture lab that fits in your bag

Two cameras, courtside, capture the point, and Uplift reconstructs the player in full 3D: torso, both arms, pelvis and legs. No wearables, no calibration ritual, no lab time. Just the mechanics behind the serve and every groundstroke.

Serve, forehand and backhand in 3D

Per-segment speed for torso, upper arm and forearm

Captured at up to 240 Hz, courtside

Inside the serve

Find the pace leak — and the overload

Uplift breaks the serve into its phases so you can see exactly where speed is lost, or where the shoulder is taking on load it shouldn’t.

Preparation

Ball release, loading and cocking, as the knees bend and the shoulder loads into external rotation.

Max shoulder ER

Peak external rotation in the cocking phase: the loaded ‘bow’ before the strike.

Acceleration

Explosive internal rotation to contact, driven by the torso → upper arm → forearm sequence.

Follow-through

Deceleration to the finish, and how safely the arm sheds load.

What you’ll measure

The mechanics behind pace and shoulder health

The measures that build racket-head speed, and the ones that flag arm overload.

Shoulder

Max shoulder external rotation

Peak shoulder ER in the cocking phase, central to both racket speed and arm load.

Sequencing

Kinematic sequence

The forward sequence (torso → upper arm → forearm) and the twist sequence.

Power source

Leg drive

Knee flexion and extension velocity through loading and acceleration.

Speed

Segment velocities

Peak torso, upper-arm and forearm angular velocities into contact.

Groundstrokes

Forehand & backhand

Forehand trunk rotation and racket-arm position; backhand cross-body and shoulder internal rotation.

Detail

Joint kinematics

Shoulder, elbow, knee and wrist angles and velocities, plus 3D keypoints.

By the numbers

Why 3D beats the eye

True joint angles, not one 2D view

240 Hz

Capture rate

Cameras (iPhones or iPads), no markers

Questions, answered

Tennis biomechanics FAQ

Which strokes can Uplift analyze in 3D?

The serve, forehand and backhand, each with true joint angles, segment velocities and, on the serve, the full kinematic sequence.

Can it show the kinematic sequence of the serve?

Yes. Torso → upper arm → forearm, with the peak velocity and timing of each link, so you can see where the chain breaks down.

Can it help protect the shoulder?

Uplift measures peak shoulder external rotation and the follow-through deceleration, the mechanics tied to arm load, so you can monitor them over a season. It’s measurement, not diagnosis.

Do players need to wear anything?

No. Capture is markerless from two cameras, so a player just plays while you record.