Research On Effects Of Physical Functional Movement Training Of Chinese Women Handball Player Shooting Skills

Handball is a skill-based,same-court confrontation type of team event,and the shooting skill is the core technique.Modern high-level handball matches have a high level of offensive and defensive speed transition,technique combinations,strong body confrontation,and high levels of athletic performance.Both attackers and defenders create opportunities to win through a series of technical and tactical actions in accordance with the Competition Rules,and the teams total scores determines the final results.The world best women handball players show high-quality and consistent shooting actions,leading the trend of modern handball training.Every evidence shows that body movement and techniques are interacted.To improve athletes specific sports ability and competitive level,it is of great significance to adopt strength training methods in accordance with shooting techniques.This study adopts the research methods such as observation,investigation and experiments to construct an index system for the analysis of women handball shooting techniques in China.Using the Sportscode Technical and Tactical Video Analysis System developed by the National Women Handball Team,a large number of Chinese and foreign women handball players' on-the-spot shooting videos and data are analyzed to clarify the typical movements and their applications of women handball players' shooting skills in China.The surface EMG testing technique is used to analyze the activation sequence and force characteristics of the main muscles in jumping up shooting,which laid the foundation for the rational design of functional strength training accordingly.Based on the physical functional movement training concept and methodology,the framework of the physical functional movement training program to improve the athletic performance of Chinese women handball players' shooting skills is established.During the winter training period of the2020/2021 Beijing women handball team,an 8-week experiment is conducted to observe the effects of physical functional movement training on the performance of shooting skill.The results are as follows:1.A three-level index system is constructed for the analysis of three dimensions of "action structure,action scenario and action effect",including three primary indexes,10 secondary indexes and 31 tertiary indexes.By capturing and analyzing 1682 video clips of shots in key games of high-level handball matches in China and abroad,the actions of typical shooting techniques of women handball players in the world is characterized as follows: jump shot-two steps assist-the other leg assist-shoulder throw-landing on the leg.The characteristics of the action scenario are: right back attacker area-jump shot-close range-breakthrough of leading tactics-shot under body confrontation.The particular concern is that our women handball team has obviously more missing shots than targeted shots in many international competitions,indicating a significant gap between China's team and the world's best teams in terms of the effectiveness of their shooting actions.2.The action of the typical shooting technique of women handball players in China includes four main steps: starting-jumping-throwing-buffering.The power-generating chain is the key link that determines the performance of jumping up shooting skill,which reflects the coordinated action mode of the main muscle groups of the lower limbs,the trunk and the upper limbs,especially the efficiency of trunk strength to control body posture and power transmission under the unstable support condition.3.Three categories and 14 indicators are established to comprehensively evaluate the performance of Chinese women handball players in shooting.The first category:indexes of sport level of specific skills(shooting speed,handball throwing,5-meter wall hit in 1 minute);the second category: indexes of muscle group effectiveness of the power chain of shooting,including upper limbs(maximum number of pull-up repetitions,bench press 1RM),trunk stability(core muscle strength),lower limbs(squat 1RM,standing long jump,single-leg jump,swing arm squat jump CMJ,10-metre sprint);the third category: physical functional assessment and potential injury risk indicators(Functional Movement Screen,Y-balance,injury statistics).4.Taking the Beijing women handball team as an example,20 athletes in training are blindly divided into experimental and control groups,and a total of 8 weeks and 3stages of training intervention program is developed based on 5 principles of physical movement function training of typical shooting skills in women handball.The first phase(2 weeks)focused on functional recovery and movement correction;the second phase(4 weeks)focused on functional improvement and specific movement combination;and the third phase(2 weeks)focused on functional stability and movement improvement,the content of functional strength training in each phase.5.After 8 weeks of physical functional movement training,the results show that: the main performance of 5-metre wall hit in 1 minute,handball long-distance throwing,the average value of the three measurements of the throwing velocity improved after the experiment(p<0.05);the improvement of traditional physical strength tests such as pull-up,bench press 1RM,squat 1RM,and standing long jump in the experimental group is not significantly different from that of the control group,but the indexes of trunk core muscle strength is significantly different from that of the control group(p<0.05).The increase in FMS and YBT test scores of the experimental group are better than that the control group(p<0.05),while the injury ratio is lower than that of the control group.It shows that the targeted functional strength training improved the athletes physical functional movement significantly improved the efficacy of the transmission of the limbs power chain during the throwing process,and helped to promote the application effect of the shooting movement,and the physical functional movement training makes a significant role in enhancing the performance of the shooting skills.