This study examined the association between leg flexibility, leg length, jump height, and split leap movement scores at various levels of rhythmic gymnasts. Fifty-two young rhythmic gymnasts (age: 10.63 ± 2.9 years) were divided into two groups (qualifying, n = 32 and non-qualifying, n = 20) based on age and regional championship level. The gymnast underwent a series of fitness tests in the form of leg flexibility and leg explosive power as well as a split jump performance which was judged by 2 national and international certified judges. There was a significant difference and correlation between qualification and non-qualification in the split leap score (p = 0.00), body weight (p = 0.00; r = 0.351), limb length (p = 0.00; r = 0.420), High Jump (p = 0.01; r = 0.279), raised straight legs (p = 0.021; r = -0.279). There was no difference found in point feet but positively related at split leap score (p = 0.386; r = 0.373). The overall multiple regression analysis of all novice athletes revealed that Limb length, point feet, and high jump accounted for a medium part (32%) of the split leap score. In conclusion, the level of the gymnast (non-qualification), weight, Limb length, and arm length had a greater effect on the implementation of the split leap, whereas at the junior level (qualification) the leg explosiveness and flexibility of the leg effectively contributed to the split leap movement. Overall, the athlete's flexibility, body composition, and the explosive power of the limb variables effectively contribute to the split leap movement in youth rhythmic gymnastics.
The general aim of this research was to develop an ideal instrument to analyse the ideal anthropometric posture of artistic gymnastic sports so that profiles and proportions of the length of the athletes were ideal through analysis images. Research and development methods used the following paths for problem identification, information gathering, product design, design validation, product testing, trial used and mass product manufacturing. The results of the study contain software design (UNG) with the performance of storing and analysing images by adjusting the real coordinate scale and height digital scale as a reference to measure the athlete's body length and the degree of posture imbalance. Validity was measured in two ways, namely correlating the standard length gauge No. Reg C4 / VI / 250419 with measurements in the software amounting to 0.92 very high categories and averaging in hundreds of assessments of 92 ICT experts and sports experts at 96.5. Reliability using retest was .95 very high category. Posture Image Analysis of 150 male world gymnasts All the figures around depict the average height, Percentage of limb length, posture imbalance. in degree, posture analysis which is suitable and efficient in displaying for each exercise.it describe an average height of 166 cm with a leg length proportion of 54%, Body 26%, Head 13% and neck 5%. The conclusion of UNG software was to effectively analyse the profile image of the sample male artistic gymnastic ideal to produce a profile and the length of anthropometric proportions of the athlete's body members in accordance with the actual object.
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