The purpose of this study was to simulate the flight phase of a back 3½ somersault tuck (207 C) for a female elite diver. Starting with the analysis of a real performance initial conditions as angular momentum, takeoff velocity and trunk position were fixed. A multisegmental angle-driven 3D model was used to study different knee and hip angle patterns. Hip and knee angle modifications were moderate variations of the real performance. Coming quickly into a more compact position and keeping this tight position until come-out produced an advantage up to 130° total rotation and 50°/s mean angular velocity. This advantage obtained in the first flight phases could be used to improve the come-out or to reduce strength requirements at takeoff.
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