Research on the Index System of Freestyle Swimming Flip Turn of Elite Male Swimmers
Objective:To objective evaluate the top five indicators with the highest weight in freestyle flip turn effec-tiveness through data analysis of eight elite male swimmers and provide theoretical optimization suggestions.Meth-ods:The indicators of freestyle flip turns were established through relevant literature and expert interview,the kine-matic data of the athletes'flip turns were obtained through Klistler and Dartfish,the measured weight was obtained by applying the CRITIC-entropy weight method.Results:The top five indexes with the highest weight of freestyle flip turn were peak stirrup wall force(13.53%),speed before flip turn(9.60%),wall contact time(9.45%),somersault movement time(7.07%)and angle of the hips during the push-off(6.15%)with a cumulative weight of 45.80%.Conclusion:1)The cumulative weight of swim approach distance,outlet water distance,cen-troid distance and swim approach speed amounted to26.40%,therefore,these influencing factors deserve further in-depth study;2)accelerating speed before the flip,avoiding head lift before the flip,ensuring proper hip flex-ion angle for the turn,increasing hip flexion angle speed and stabilizing wall contact time while increasing peak stirrup force contribute to the flip turn performance of elite male swimmers.
swimmingelite swimmerfreestyle flip turnsturning indicator system
NETL
NSTL
万方数据
