| Objective:In view of the development trend of basketball in the world today,due to more and more physical confrontations in competitions,It is difficult to follow the traditional basketball concept that most of the offensive scoring choices are made under the basket,Multiple offensive choices are accomplished through mid-and long-distance or long-distance shooting,It can be seen that if you want to have a good shooting effect,first of all,the shooting posture should be more standardized.From the process of literature research,it is found that the training method represented by small field training is more novel in form,more flexible in the formulation of training rules,more targeted to a certain technology or ability,and can arouse the training interest of trainers more than the traditional physical skill training.But so far,most of the domestic small field training is football training,and there are not many people who apply small field training to basketball to improve shooting skills.In order to explore that small field training can effectively improve the standardization degree and level of shooting skills,from the perspective of biomechanics,through the experimental training intervention,the differences in shooting skills between subjects in the experimental group before and after the experimental intervention were compared and analyzed to provide a frame of reference for basketball training practice.Methods: The thesis mainly uses literature,experimentation and mathematical statistics to collect kinematic data from 12 male basketball students in the experimental group and 12 male basketball players in the control group.The kinematic data was divided into four phases,namely the catching phase,the jumping phase,the jumping phase,the landing phase and the jumping phase,because the division of the phases is an important step in the study of technical movements.The results of the 12-week SSG training were compared with those of the control group and the experimental group.Results: 1.In the comparison of the time characteristics of the phases of the experimental group and the control group before the experimental intervention,there was a highly significant difference in the time spent in the vacating phase(P < 0.01)and in the landing phase(P < 0.05),and after the intervention,there was a significant improvement in the time spent in the vacating phase and the landing phase when the subjects in the experimental group completed the technical actions of jumping and throwing(P < 0.05),and the average time spent in the preparation The average time spent in the preparation phase and the jumping phase was shortened,but there was no significant difference and the change was not significant(P>0.05).2.In the comparison of the lower limb joint angle changes between the experimental group and the control group during the jumping phase before the intervention,there were significant differences between the left hip and the left and right knee joints(P < 0.05);in the comparison of the angular velocity changes,there were significant differences between the left and right hip joints and the right knee joint,and the left knee joint had a highly significant difference(P < 0.01).The changes in knee joint angle and angular velocity of the subjects in the experimental group after the intervention were significantly higher than those before the experimental intervention and showed significant differences(P < 0.05),while the angles and angular velocities of other joints were not significantly different and the changes were not significant.3.Before the intervention,there were significant differences between the experimental group and the control group in the comparison of upper limb joint angle changes during the vacating phase in the shoulder and wrist joints;there were significant differences in the comparison of angular velocity changes in the shoulder,elbow and wrist joints(P < 0.05).After the intervention,there were significant differences(P < 0.05)in the elbow and wrist joints,and significant differences(P <0.05)in the angular velocities of the elbow and wrist joints compared with those before the intervention,while there were no significant changes in the shoulder joint angles and angular velocities.4.In the comparison of the lower limb joint angle changes between the experimental group and the control group during the landing stage before the intervention,there were significant differences in the left hip joint,left and right knee joints and left and right ankle joints(P < 0.05);in the comparison of the angular velocity changes,there were significant differences in the left hip joint,right knee joint and right ankle joint(P < 0.05),and there were highly significant differences in the left knee joint and left ankle joint(P < 0.01).The angles and angular velocities of the lower limb hip,knee and ankle joints improved after the intervention compared with those before the intervention,and the level of changes were all close to the level of the control group,but the improvements were not significant and did not differ significantly(P > 0.05).Conclusion:After 12 weeks of SSG intervention,the time characteristics of the subjects in experimental group were redistributed among the four phases of the jump shot,with significant changes in the time spent in the air and landing phases and a more rational distribution of time throughout the jump shot technique.A highly significant difference in the change in knee angle between the right and left sides of subjects in experimental group during the jumping phase,as well as a significant improvement in the angular velocity of the left and right knees,enhancing the speed of knee flexion and extension,resulting in a more powerful lower limb during the jump and a more rapid movement when performing the manoeuvre.After 12 weeks of SSG intervention,subjects in experimental group showed increased upper limb joint flexibility,mainly in the form of significant changes in elbow and wrist joint angles,and increased upper limb strength,mainly in the form of a significant increase in angular velocity of the elbow and wrist joints,and an increase in angular velocity and angular velocity of the shoulder joint,albeit of a small magnitude.There was no significant difference in the angle and angular velocity of the lower extremity joints during the landing phase in experimental group subjects compared to the pre-intervention period,and the SSG intervention training had little effect on the joints of the lower limbs of the subjects during the landing phase.Combining the above findings,SSG training can be effectively analysed from a kinematic perspective to improve and optimise basketball jump shooting technical movements and increase shooting efficiency. |
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