REACTIONS ON PHYSICAL FITNESS TRIGGERED BY CORE STRENGTH TRAINING IN MALE COLLEGE BASKETBALL PLAYERS

ABSTRACT Introduction: Good physical fitness refers to the ability of the human body to perform daily study and work activities effectively without fatigue. The physical quality of men’s basketball players is one of the essential factors affecting the team’s performance. Core strength training refers to the work of the stabilization-related muscle groups located at the meeting of the base of the trunk, spine, pelvis, and lower limbs of the human body. It is believed that core strength training can help improve the basketball player’s athletic physical conditioning. Objective: This study aims to explore the reactions that core strength training can provoke on physical fitness in male college basketball players. Methods: Delphi method, principal component and factor analysis, R-type cluster analysis, and professional logic analysis were used to study the physical fitness quality of male college basketball players. Results: The test indicators and methods selected in this paper can reflect the fitness level of athletes. There was no significant difference in speed, flexibility and lower body strength of athletes in different defense position, forward position and center position (P>0.05). The fitness level of athletes after core strength training was significantly improved (P<0.05). Conclusion: Core strength training can improve fundamental skills of basketball players, such as fast dribbling and short-duration running at high intensity. College male basketball players were shown to improve their indicators of physical fitness and overall physical conditioning. The results of this research provide a verified protocol that justifies its inclusion in the training of college male basketball players. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.


RESUMEN
Introducción: Una buena forma física se refiere a la capacidad del cuerpo humano para realizar las actividades diarias de estudio y trabajo de forma eficaz y sin fatiga.La calidad física de los jugadores de baloncesto masculinos es uno de los factores esenciales que afectan al rendimiento del equipo.El entrenamiento de la fuerza del core se refiere al trabajo de los grupos musculares relacionados con la estabilización, situados en el encuentro de la base del

INTRODUCTION
Physical fitness refers to the ability of the human body to have sufficient energy to engage in daily work (study) without feeling fatigued, to have spare power to enjoy recreational and leisure activities, and be able to adapt to emergencies.According to the American Academy of Sports Medicine, physical fitness includes health fitness and skill fitness. 1 The main contents of healthy fitness are as follows: body composition, muscle strength, muscular endurance, cardiorespiratory endurance, and flexibility.Physical fitness includes agility, balance, coordination, speed, explosiveness, and reaction time.These elements are the basis for engaging in various sports, but there is no evidence that they are directly related to health and disease.
From the perspective of modern kinematics, physical fitness reflects a person's ability to adapt to society, sports, and the environment.That is to say, the adaptive change of people's physical quality and functional state in such a process.In the process of basketball, the technical level, tactical level, physical condition, and applicable state of the participants are constantly improving in the continuous practice and training to adapt to the ever-increasing competitive level and intensity of the game. 2 But what are the main aspects and positive effects of basketball on promoting and improving participants' physical fitness?This paper aims to find out how basketball can change the physical fitness of college students by comparing the athletes of college basketball teams with general college students to develop college basketball better.

METHOD Research objects
This paper selects the third-year first-year students as the research object.The number of people is 80.We randomly selected 40 people to participate in the particular basketball class (exercise group), and 40 did not participate in any elective course (control group).After statistical comparison, it was found that there was no significant difference in the comparison of physical fitness indicators between the two groups of subjects.

Documentation method
We consulted Chongqing VIP, Baidu, CNKI, highwire, basketballrelated textbooks and materials, physical fitness research materials, etc.

Logic Analysis
This paper systematically analyzes the physical fitness characteristics of college basketball players. 3At the same time, we summarize the characteristics and laws of material fitness changes of athletes in basketball training.

Visit Survey Method
We interviewed some senior college basketball teachers, coaches, scientific researchers, basketball theory experts, and physique research experts.

Mathematical Statistics
This paper uses SPSS13.0 software to carry out statistical analysis on the data measured by the experiment.

Test method
This test evaluation includes the test subjects' health and functional fitness indicators before the experiment.

Basketball virtual simulation
The basketball motion model uses the X'YZ coordinate system.The X' axis represents the horizontal direction from the throw point to the basket.The Y axis represents the movement height of the basketball. 4uppose the deflection angle between the X' axis and the direction of the actual shot is α, and the coordinate of the ball is (X', Z) at this time.g stands for the acceleration of gravity.ϴ 0 is the angle from which the basketball is thrown.ʋ is the speed of the basketball.ʋ 0 is the initial velocity.The dynamic equation of the basketball flying at the time t is The air resistance on a basketball is proportional to the square of its momentum.

F kυ =
(2) K is the air drag coefficient of the basketball in flight.

Design and implementation of the physical fitness training program
The experimental group participated in one semester of basketball training.The number is 40 class hours, and each class hour has two classes for a total of 90 minutes of exercise.The main experimental contents are primary basketball theory teaching and basketball basic technical training. 5The range includes basketball dribbling, passing, shooting, and technical and tactical training.During the experiment, the coach should supervise and control the diet and living habits of the experimental group and the control group on time.This prevents diet and living conditions from affecting the physical fitness of the research subjects.This experiment requires each subject to fill out a physical activity questionnaire and a dietary survey every month.

Elements of body composition indicators
After half a year of systematic training, the research subjects showed no significant changes in body shape. 6However, there were specific changes in the indicators of body composition.(Table 1) The primary performance is that the muscle strength of the exercise group increases in muscle content and decreases in fat content.There were significant differences in body fat ratio and lean body mass from the experimental results.

Characteristics of Cardiopulmonary Function, Muscle Strength and Flexibility Indicators
After basketball training, the students' flexibility in the exercise group was exercised. 7They also improved cardiorespiratory fitness and increased arm strength.There were significant differences between the exercise and control groups.(Table 2)

Characteristics of each index of physical fitness
There was a significant difference in agility between the exercise and control groups. 8Balance was also improved in the exercise group.Its reaction speed is also accelerated, and the explosive power of the legs is also increased accordingly.And there were significant differences in each group.(Table 3)

DISCUSSION
After half a year of systematic training, excluding the influence of other interfering factors, the college students in the exercise group have improved and improved in all aspects of physical fitness. 9But there was no significant change in BMI.This shows that basketball exercise during a short basketball session can change the participants' body composition.But it has a more negligible effect on the body's basic shape.Perhaps other interventions and interventions or control in diet, nutrition, and living habits may have a particular impact on the effect of the experiment.Basketball can play a role in losing weight and shaping the participants.At the same time, from kinesiology and physiology, moderate exercise can improve exercisers' fitness and functional levels.However, how athletes can control the degree and volume of training during exercise needs to be studied in further experiments.

The effect of basketball on the health and fitness of college students
Basketball is a sport that requires both aerobic and anaerobic abilities.In the long-term basketball process, athletes need a healthy level of aerobic endurance.A lot of energy is expended throughout the workout. 10Therefore, through long-term basketball exercise, all parts of the exerciser's body can be fully exercised.Athletes can also burn off excess body fat at this time.At the same time, basketball belongs to the same field of confrontation. 11They need physical contact during fights.Strength quality plays a crucial role in this process.Long-term exercise can increase muscle and strength.For college basketball, basketball is mainly for entertainment.During the training, the participants lost fat and gained the power to achieve a good body shape.The improvement of living standards and nutrition has led to insufficient exercise for college students.This can lead to the accumulation of body fat, especially in the abdomen.This can lead to body shape deformation.Colleges need to actively participate in physical exercise, mainly a fun sport like basketball.Basketball can not only have the effect of exercising the body, but also lose weight and plasticity.Basketball helps athletes improve body composition and increases aerobic endurance levels in exercisers. 12asketball has a particular influence on the body shape of college students.The body fat content of the exercise group was significantly lower than that of the control group.The lean body mass of the exercise group was significantly higher than that of the control group.This suggests that basketball plays a role in reducing fat mass, and strength training affects lean body mass. 13Many studies show that exercise reduces body fat percentage, reducing circulating blood lipids.This is consistent with the results of this study.Therefore, college students have a significant effect on changing their body shape through basketball exercise.At the same time, the flexibility of basketball exercisers has also been improved.Better flexibility can also make muscles and joints better protected.This avoids sports injuries such as muscle strains or joint sprains caused by exertion. 14

The influence of basketball on the skills and physical fitness of college students
In basketball physical fitness training, physical skill fitness determines the level of basketball competition.College students in basketball mainly focus on fun and entertainment.We selected several representative indicators in the test: strength, explosiveness, agility, and balance.The results show that college students' long-term engagement in basketball can significantly improve their skills and physical fitness indicators. 15

CONCLUSION
While paying attention to the entertainment of basketball teaching, colleges and universities should strive to develop the education of basketball athletic ability.In this way, the basketball competition level of college students is cultivated.College students' long-term engagement in basketball can improve their cardiorespiratory function.At the same time, the physical shape of students can be improved, and various quality indicators of physical fitness can also be comprehensively improved.
The author declare no potential conflict of interest related to this article

Table 1 .
Effects of two groups of body composition indicators after the experiment (x ± SD).

Table 2 .
Effects on the physical quality of college students (x ± SD).

Table 3 .
Impact on the skill quality of college students (x ± SD).