Study On The Relationship Between Action Load Characteristics And Load And Injury Risk Of Jiangsu Youth Women's Volleyball Competition

Objective:In this study,rating of perceived exertion(RPE)and catapult sports performance analysis system were used.The young women's volleyball players in Jiangsu Province were given a total of 7 weeks before and after the 13th National Games,and the daily training and competition load The injury characteristics,the change of load and the occurrence of injury occurred in Jiangsu youth women's volleyball players.For the coaches,athletes to arrange training load to provide a certain digital reference for the volleyball sports injury risk control to provide some theoretical support.Methods:The Australian catapult motor performance acquisition system,RPE index,NRS pain index were used to record the load situation and injury of the athletes during the investigation.(RHIE)was used to analyze the difference of different operating loads,and the difference of the different operating loads was compared with that of the different intensity,the acceleration,the emergency stop,the left and right,the different frequency,the different intensity,p<0.05 that the test was statistically significant.Pearson correlation analysis was used to test the correlation between sRPE and NRS pain in chronic injury,and the equation was established by one regression.The correlation between sRPE and injury rate was tested by Pearson correlation analysis.The three-point method(33%,67%)was divided into three groups:high,medium and low.The risk of injury(OR)in the low load group was analyzed by low load group and chi-square test.Results:Jiangsu young women's volleyball players average single-game competition per capita jumping action 111.87±45.32 times.Libero have the least number of jumps,and the number of other jumps is high,but there is no significant difference.Jiangsu young women's volleyball athletes an average speed of the game,emergency stop,left change,right change were 20.50±+11.30 times,8.73±4.16 times,12.37± 10.3 times,6.10±3.65 times.An average of 21.7±13.0 RHIE rounds,averaging 4.4 ± 1.2 times per second,repeated high-intensity emergency stop,acceleration,change and jump,averaging 2.1 ± 1.4s per second,averaging every 2 RHIE rounds The recovery time was 267.1 ± 102.3s.Statistics of Jiangsu youth women's volleyball injury history,the incidence of injury 100%.The lesion occurred in the lower limbs(55.6%).In all the injuries,the knee injury rate was the highest(25.9%).Statistics of Jiangsu youth women's volleyball track during the investigation of injuries,the injury rate of 11.6 people/1000 hours training or competition,chronic injury 10.0 person/1000 hours training or competition,acute injury rate of 1.6 people/1000 hours training or competition.Fingers,shoulders,thighs,knees,feet are often injury parts.To joints,ligaments,muscle injury based.(R = 0.757,p<0.01).The scores of chronic injury NRS pain were significantly correlated with the sRPE load(r = 0.757,p<0.01).The injury rate of the chronic injury athletes increased by 1 degree for every one training or competition load.(R = 0.889,p<0.01).The correlation between the average load and the injury rate of the young women's volleyball athletes in Jiangsu was correlated.In the range of high load(6769-9525AU),the risk of injury increased by 12.429 times(OR 12.429,95%CI 3.131-49.337),and p<0.01.The weekly load(1887-5430AU)was used as reference.While the moderate load(5431-6768AU)training did not increase the relative risk of injury,p>0.05.conclusion:Jiangsu youth women's volleyball athletes an average jump of 111.87 ± 45.32 times per game.Free people have the least number of jumps,and the number of jumps is high.Averaging a game of high intensity left and right times less than straight forward.Jiangsu youth women's volleyball athletes to complete an average of 21.7 ± 13.0 RHIE round.Statistics of Jiangsu youth women's volleyball injury history,injury occurred in the lower limbs,all injuries,knee injury rate is highest.Statistics of Jiangsu youth women's volleyball track during the investigation of injury,the injury rate of 11.6 people/1000 hours training or competition,fingers,shoulders,thighs,knees,feet are often injury parts.To joints,ligaments,muscle damage based.Chronic injury athletes increased by 1 degree for each additional training or competition load of 143.5 AU.There was a dose-dependent relationship between the average load and the injury rate of the athletes.When the weekly load changed within(1887-6768AU),the risk of injury did not increase,and the risk of injury increased by 12 times when the load was exceeded.