Watch the shoulders.
They travel backward as soon as the seat leaves the catch. The torso reaches upright while the knees are still substantially bent.
Early back opening · Correction 02
Hold the shape you set at the catch long enough for the legs to move the seat and handle together.
The shoulders and hips should travel together at the start. Save the torso swing until the knees are mostly down.
They travel backward as soon as the seat leaves the catch. The torso reaches upright while the knees are still substantially bent.
Push the machine away before you swing.
Chasing extra length, losing connection between feet and handle, or setting resistance too high can make the back take over. Fatigue often makes the pattern more obvious.
Early back opening is a large torso-angle change during incomplete leg extension. It differs from layback too soon: the torso can open early while it is still forward, while early layback specifically crosses behind vertical before the legs are ready.
Concept2 teaches a legs-then-body-then-arms drive. British Rowing likewise describes meaningful leg extension before the hip angle opens. A qualified coach can help when the body position is hard to judge or an adapted stroke needs an individualized sequence.
RowCoach describes a visible timing relationship. It does not diagnose back pain or prescribe one body angle for every athlete.
The side view supplies pose landmarks and stroke timing while camera video remains on your device.
A catch reference is compared with relative torso movement as the knees extend. Sensitivity is adjustable.
Camera roll, occlusion, clothing, body proportions, or weak landmark confidence can limit the prompt. Observation is not a universal biomechanical threshold.