Monitoring And Technical Evaluation Of The Equestrian Primary Training Of Modern Pentathlon Athletes

Objective: In modern pentathlon,the losing rate accounts for a large proportion of the total losing rate,and the time of individual training is limited.Scientific monitoring and technical evaluation of riding training for modern pentathlon athletes in the initial stage of equestrian training are carried out,and coaches are assisted in daily training arrangement,so as to promote athletes to quickly master riding skills in a short period of intensive training,and provide theoretical support and practical basis for the improvement of equestrian training means and sports level.Method: In this paper,the methods of literature review,experiment,observation,expert interview and mathematical statistics were used to monitor the two equestrian intensive training sessions in 2018 and 2019 for 8 athletes from hubei modern pentathlon team.JVC high-speed camera was used to shoot 2d images of technical movements such as straight-line brisk walking,running and obstacle training during equestrian training.Dart sport analysis video software was used for on-site or timely rapid technical instructions and training feedback.The APAS image analysis system was used to analyze technical data,to evaluate the overall level of the athletic-horse coordination during training,and to explore the movement mode of multi-joint linkage as well as the biomechanical characteristics of the movement technology.Results: Rapid feedback of training monitoring shows that after two periods of video monitoring feedback of primary equestrian training,modern pentathlon athletes in Hubei province have improved their riding posture and limb joint Angle control in riding briskwalk,running and jumping obstacle training.In terms of the degree of centroid coordination,the vertical displacement of the center of gravity of the athletes and horses in each training period was significantly correlated(P <0.01),and the correlation coefficient increased with the increase of training time.The brisk walking training increased from 0.57±0.15 at the beginning of the first period to 0.65±0.15 at the end of the first period,and the moderate correlation 0.68±0.07 at the beginning of the second period to a high correlation 0.76±0.07 at the end of the second period.The correlation value of running training increased gradually in the highly correlated region,from 0.73±0.16 at the beginning of the first period to 0.87±0.07 at the end of the first period and from0.85±0.06 at the beginning of the second period to 0.87±0.03 at the end of the second period.The correlation value of jumping obstacle training increased from 0.72±0.08 in the first phase to 0.85±0.04 in the second phase.In terms of movement mode,athletes’ lower limb joints show personalized movement mode during brisk walking and running training.After jumping obstacle training,the peak of lower limb flying Angle appeared more delay than the landing time,from 0.01 ～ 0.1 SEC in the first phase to 0.01 ～ 0.13 SEC in the second phase.However,the lower limb joint linkage mode of one athlete in two training periods was ankle extension-knee extension-hip flat,without any change.The peak Angle of takeoff and landing was 0,that is,the landing was straight,with no cushioning stage and easy to be injured.In terms of technical features,the Angle of the athlete’s ankle in brisk walking ranged from 86.62° to 114.45°,and the range of movement ranged from 15.97° to 40.50°.The knee Angle was 98.39° ～ 117.37°,and the range of motion was 28.47° ～ 48.99°.The Angle of hip joint was 107.62° ～ 152.66°,and the range of motion was 47.86° ～ 98.69°.During running,the athlete’s ankle Angle ranged from 98.95° to 108.38°,and the range of movement ranged from 15.57° to 57.80°.The Angle of knee joint was 95.93° ～ 110.07°,and the range of motion was 18.84° ～ 24.13°.The Angle of hip joint is 105.72° ～ 146.99°,and the range of motion is23.13° ～ 127.77°.The range of motion of hip joint is too large in brisk walking and running.In jumping obstacles,in the stage of taking off and landing with the horse,most athletes take the initiative to adjust the body posture of the hip joint,followed by the ankle joint.Comparatively speaking,the Angle of the knee joint does not change significantly.The stride length of the athletes in brisk walking training ranged from 324.93±44.83 cm at the beginning of the first training period to 356.87±19.24 cm at the end of the first training period,350.94±10.83 cm at the beginning of the second training period,to 325.82±13.3cm at the end of the second training period.During the running training,the stride length changed from409.05±40.33 cm at the beginning of the first training period to 442.02±38.38 cm at the beginning of the second training period to 399.37±15.33 cm at the beginning of the second training period to 355.95±16.86 cm at the end of the second training period.The stride length has experienced a process from increase to decrease,showing that the athlete’s ability to control the rhythm of the horse has improved.Research conclusions: Assisted the coaches to monitor the technical training of modern pentathlon youth athletes in Hubei Province,and promoted the athletes to master the equestrian riding technology quickly.After intensive equestrian training,the level of coordination between mobilization and horses was improved.The ability to control the rhythm of the horse’s movement is enhanced.Studies have shown that hip joint angles are too high for brisk walking and running.The analysis of the multi-joint linkage mode found that the collective jumping technique improved,and discussed the possible reasons for some athletes who had not improved the joint mode of lower limbs for a long time to lose in jumping competitions.