OBJECTIVE:To investigate the technical changes in Qieyang Shijie's racewalking performance at different stages of the race during the Hangzhou Asian Games.METHODS:This study employs literature research method,video observation,and statistical analysis to examine key technical aspects of Qieyang Shijie's racewalking technique.RESULTS:While Qieyang Shijie's overall racewalking technique is proficient,several detailed issues were identified:(1)There are variations in the support time of the left and right legs across the"early-middle-late"stages,with the most pronounced difference occurring in the middle stage.(2)During the lower limb swing,a"rear kick"phenomenon is observed in the early stage,leading to a"jumping"visual effect,and the swing time is also slightly longer in the early stage.(3)The head exhibits vertical fluctuations in the middle stage.(4)There is an imbalance in the arm swing amplitude across the"early-middle-late"stages.(5)The angle between the legs varies significantly,particularly in the late stage,where there is a decline in physical fitness,instability in the"hip push"technique,reduced thigh lift,smaller leg angle,and an imbalance in the phase displacement ratio of hip joint swing and support.SUGGESTIONS:Qieyang Shijie should enhance physical conditioning and balance training for both upper and lower limbs;focus on energy distribution to prevent physical decline in the latter part of the race;strengthen ankle dorsiflexor/extensor exercises;address vertical fluctuations in the head and the"rear kick"phenomenon during the swing phase;adjust arm swing amplitude to improve trunk rotation balance;and refine the"hip push"technique in the later stages while balancing the phase displacement ratio of hip joint swing and support for improved performance.
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