AI-powered seated thoracic rotation test for volleyball athletes. Measure spinal mobility, rotational symmetry, and thoracic stiffness. Identify rotation deficits that limit hitting power and shoulder health.
Maximum thoracic rotation angle to each side. Limited rotation forces the lumbar spine and shoulder to compensate, reducing power and increasing injury risk.
Left vs. right rotation comparison. Asymmetry indicates mobility deficits that can cause uneven hitting power and shoulder strain.
Horizontal angle of the shoulders during rotation. Measures true thoracic contribution versus lumbar compensation.
The seated position isolates thoracic mobility by preventing pelvic rotation. Confirms the test measures spine mobility, not hip rotation.
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