Abstract
Turning Split Leap movement specific to rhythmic gymnastics was analyzed to developmental change in the pattern of motion among rhythmic gymnasts with movement pattern in 1 year. In the stepping phase, the Post showed a greater right foot movement speed than the Pre in the 0-80% phase (p<0.05). In the jumping phase, significant differences were observed in the 50-90% phase of the knee joint angle, with Post showing more flexion than Pre (p<0.05). In the hip joint angle, significant differences were observed in the 40-100% phase, with Post showing more extension than Pre. In the anterior-posterior leg opening angle, the Post showed significantly higher values than the Pre in the 60-100% phase (p<0.05).The results suggest that an increase in the speed of the right foot movement during the crossing phase increases the anterior-posterior leg opening angle and the left foot hip extension position during the jump phase, enabling the left foot to maintain an open leg posture with a wide range of hip motion.
