Training Research Of Chinese Elite Women Sprinter Jiang Lan

Purposes: The aim of this study was to investigate the training of Chinese elitefemale sprinters Jiang Lan during preparing for the national game cycle. Especially,based on analysis of strength and motion analysis technology, training programs forintervention were promoted to balance the strength and to improve technical movements.Through the analysis of Jiang Lan individual sprint performance improvement andcoordination obtained between step length and stride frequency, by which mayprovide a reference for our women’s sprint training monitoring.Methods: In this paper, literature, expert interviews, experiments andmathematical statistics and other methods were used. From the perspective ofbiomechanics, we study the training of female sprinters Jiang Lan before preparing theTwelfth National Games. Training interventions were performed based on the results ofstrength and technical movements test. The effectiveness and quality of trainingintervention were discussed via biomechanical test and race performance.Results and conclusions:1During preparation for the Games twelfth cycle, overall, Jiang Lan special fitnesslevel is satisfactory, with comprehensive technical training and less injury. In order toconsolidate and develop the special qualities and special techniques, all aspects of thespecial qualities need to be strengthen and sprint technology need improved.2Carring out quantitative physical, athletic skills test and evaluation helps todesign and adjustment of the training program. Jiang Lan training muscle imbalancewas observed: knee flexors bilateral difference over20%at the beginning of the trainingperiod and the cycle of insufficient strength of knee flexors (slow, fast flexion ratio <60%), Bilateral limb strength differences were reduced to promote muscle coordination.Maintaining muscle balance helps maintain and improve the race performance. 3Even though Jianglan’s speed is fast, small range of motion characteristics of theentire cycle of training was focused on keeping other forms of training in the samecircumstances, the training aim was to increase the step length while not reduce the stepfrequency. After training, the average step length increased from1.82m to1.85m during100m, from1.89m to1.91m during200m. mean step frequency increases from4.64step/s to4.69step/s during100m,200m from4.42step/s to4.48step/s.4With the change of strength and sprint technique of Jiang Lan, step lengthincreases, the hip angle changes were detected at foot touch down moment(P <0.05,before training138.7±5.3°and after training136.6±5.1°), other kinematicparameters changes not observed, indicating that the step change is reflectedcomprehensive body of running processes, rather than a single joint force or movementchanges the running movement; gait parameters variability may be greater than thedegree of variability of the step change differences.