Variability of sagittal joint kinematics of female horse-riders over a jump

This study aimed to improve understanding of horse-rider technique in show jumping, to support the development of training programs. Range of motion, peak flexion and extension angles were estimated for the shoulder, elbows, hips, knees, and ankles of six female riders jumping two different fence types (oxer and straight), using a full-body inertial motion unit (IMU) suit (MVN Awinda). Horse kinematics were recorded using IMU and GPS technology (Alogo Move Pro). All rider joints showed inter-participant (population standard deviation range: 5.4°(ankle) - 43.2° (elbow)) and intra-participant variability (individual SD range: 1.7°(ankle) - 57.5°(hips)). Findings suggest differences in riding strategies and/or in strategy execution, challenging the traditional, strict equestrian guidelines, and highlighting the need for greater characterisation of show jumping strategies.