Selection Of Athletes Research Articles

Digit ratio (2D:4D) and performance in non-elite male badminton players

Background: The second to fourth digit ratio (2D:4D ratio) is derived by dividing the length of the index finger (2D) by the length of the ring finger (4D). It has been considered as an index of how much the fetus is exposed to testosterone in utero. Research has suggested that high levels of testosterone are associated with low 2D:4D ratio. The relationship between 2D:4D ratio and physical performance is still an unexplored field in badminton players. Aims and Objectives: This study intends to assess the digit ratio 2D:4D in non-elite male badminton players in comparison to their sedentary controls. Materials and Methods: The study included 30 male badminton players in the age group of 19–23 years who were practicing badminton for more than 3 years and 30 age, body mass index-matched sedentary controls. The second and fourth finger measurements were taken from scanned printouts using Vernier calipers. Results: The 2D:4D ratio was significantly lower in the left hand of badminton players when compared to their controls (P = 0.0001). There was no significant difference in 2D:4D ratios of the right hand and 2D:4D (Δ r–l) between badminton players and controls. Conclusion: The findings in our study partly support the concept that 2D:4D ratio in an important parameter in selection of athletes. The reason for no difference in 2D:4D ratio and controls in the right hand could be due to the fact that badminton is a moderate intensity sport, and also, the study participants were non-elite players.

Теоретико-методичні основи етапів, періодів розвитку проблем та аспектів спортивного відбору

Identifying the factors of the formation of sports skills of young athletes is necessary for increasing the level of preparedness, improving the management of the educational and training process, forecasting in the field of sports, specifying tasks, choosing means, and rationalizing the planning of the training process. The analysis of literature and practice shows that selection is a system of organizational and methodical measures of a complex nature, including pedagogical, sociological, psychological and medical-biological studies, on the basis of which aptitudes and abilities are revealed. The development of a system of methods for the selection and forecast of promising athletes requires knowledge of the requirements of the sport, which include the presence of specific morphofunctional features, physical qualities, coordination abilities, functional features of support and regulation systems, as well as mental qualities. Of particular importance is the selection of not only those future athletes whose anthropometric and physiological or some other indicators are suitable, but also athletes with aptitudes. With their help, you can solve the problems of training sports reserves, without which progress in sports is impossible. The method of sports selection at the stage of initial training is determined by the main task of the first level of selection – to help the child choose the right sport for classes and future improvement. The ideal solution to the selection problem is model characteristics for all aspects of physical development and sports-pedagogical activities from beginners to highly qualified athletes.

Implementasi Metode Analytical Network Process (ANP) Pada Sistem Pendukung Keputusan Dalam Seleksi Atlet Penyandang Disabilitas Sumatera Utara Untuk Bertanding Di Ajang Pekan Paralimpiade Nasional (PEPARNAS)

National Paralympic Week (Peparnas) is a competition event that resembles the National Sports Week (PON) for athletes with disabilities in Indonesia. At the National Paralympic Week (Peparnas) North Sumatra Province also registered athletes with disabilities to be able to compete to become champions at the event. In order to achieve the main goal of being a champion at the National Paralympic Week (Peparnas) it is necessary to need competent athletes with disabilities. Therefore, an appropriate selection process for athletes with disabilities is carried out by involving several established criteria. In this study the authors conducted research at the Medan City Youth and Sports Office to obtain the data needed for the selection procedure for athletes with disabilities in North Sumatra to compete at the National Paralympic Week (Peparnas). The purpose of this study is to design a decision support system for the selection of athletes with disabilities in North Sumatra using the Analytic Network Process (ANP) method. The system that has been designed can make it easier for the Medan City Youth and Sports Office to conduct the selection process for good and competent athletes with disabilities to be registered at the National Paralympic Week (Perparnas) competition. Where the results of the application of ANP, based on the evaluation results, the alternative that has the highest priority weight is the Foggia i alternative. Therefore, Foggia was chosen as Tamping at Tanjung Gusta Medan. Randi has a priority weight of 1.62

Justification of the Selection Techniques in Martial Arts using Wald's Sequential Analysis

The study purpose was to develop a selection technique in martial arts based on indices of physical development using Wald's sequential analysis.
 Materials and methods. 12 anthropometric indicators were determined. 9 indexes of physical development were calculated on their basis. 16 elite athletes (candidates for masters and masters of sports) were divided into two groups. Group 1 included 7 athletes (judo, sambo, Greco-Roman and freestyle wrestling) aged 18.43±0.43. Group 2 included 9 kickboxing athletes aged 18.22±0.52.
 Results. A prognostic table containing indices of physical development has been developed. The informativeness of the indicators varied within 296.15–1.73. The content of the prognosis consists of evaluating the results, determining the corresponding coefficients and summing these coefficients until one of the prognostic thresholds is reached. In accordance with generally accepted approaches, the value of the thresholds was set at the level of ±13, which corresponds to a probability of 95% (p<0.05). Exceeding the positive threshold improves an athlete's prospects in wrestling. Achieving a negative threshold corresponds to a perspective in kickboxing.
 Conclusions. The conducted research made it possible to justify and develop a method for selecting martial arts athletes using indices of physical development. The proposed technique is based on Wald's sequential analysis and is a simple, informative and objective tool for the selection and prognosis of athletes' condition.

Chronological heredity (environmental) analysis, food, blood group, important variables for the selection of athletes on various sports events

Chronological heredity (environmental) analysis, food, blood group, important variables for the selection of athletes on various sports events

Biomechanics of the lead straight punch of different level boxers.

We analyze and compare the differences in the biomechanical parameters between the lead straight punch and the index of force development of the lower extremities of boxers of different levels of ability. This can bridge the technical gap and provide insight and information for training strategies and athlete selection. To this end, a synchronized Vicon infrared 3D motion-capture system, two Kistler force platforms, and Kistler 8 target sensors were used for analysis. Sixteen boxers were recruited and sorted into an elite group (height 181.14 ± 3.01cm, body mass 76.00 ± 10.028kg) and a junior group (179.67 ± 5.84cm, body mass 75.47 ± 12.19kg), and their lead straight punch was then compared and analyzed. Three punch velocity indexes-peak velocity, contact velocity and Punching deceleration rate-six strength indexes-impulse, peak force, relative strength, peak time (frame), rate of force development (RFD), and movement time-and five exertion of both legs indexes- peak force, peak force/body mass, peak time, RFD index, and RFD/body mass index-were selected for analysis. Significant differences in the peak punch velocity and contact velocity were found between the two groups (7.162 ± 0.475m•s-1vs. 6.317 ± 0.415m•s-1, Cohen's d = 1.89, p < 0.01, 5.557 ± 0.606m•s-1 vs. 4.874 ± 0.385m•s-1, Cohen's d = 1.34, p < 0.05). Furthermore, significant differences were noted in the peak force [(1507.99 ± 411) N vs. (1035.45 ± 220) N, Cohen's d = 1.43, p < 0.01], relative strength [(21.04 ± 5.88) N•kg-1 vs. (15.61 ± 2.53) N•kg-1, Cohen's d = 1.19, p < 0.05], impulse [(88.61 ± 25.88) N•ms-1 and (60.53 ± 9.03) N•ms-1, Cohen's d = 1.45, p < 0.05], and RFD [(88.61 ± 25.88) N•ms-1 and (60.53 ± 9.03) N•ms-1, Cohen's d = 1.45, p < 0.05]. Among the four indexes of the lower extremities from two embedded Kistler force platforms, there were significant differences in the lead leg's peak force/body mass [(19.68 ± 4.096) N•kg-1vs. (13.320 ± 2.223) N•kg-1, t = 3.902, Cohen's d = 1.92, p < 0.01], RFD index [(16.90 ± 3.269) N•ms-1vs. (10.28 ± 4.313) N•ms-1, Cohen's d = 1.72, p < 0.01], and RFD/body mass index [(23.47 ± 4.09%) N•ms-1Kg-1 vs. (15.38 ± 5.65%) N•ms-1Kg-1, Cohen's d = 1.64, p < 0.01]. There were no significant differences in the four indexes on the rear leg between the two groups (p > 0.05). Based on the disparity in the effect of the lead straight punch and the biomechanical parameters of both lower extremities, the boxers must attach importance to sequential acceleration-braking training to improve the terminal velocity of the hand, and thus improve the contact velocity. Furthermore, it is advised that coaches and practitioners carefully consider increasing start-up strength training of the lead leg and attempt to improve the peak velocity of the lead straight punch. In addition, these biomechanical parameters can be used as criteria for the selection of boxers.

Sport Communication Report: Samsung Communication Campaign for Rio Olympic Games

This paper analyses the content and strategy of Samsung's sport communication campaign during the Rio Olympic Games. This paper reviews the relevant marketing and communication theories and then analyzes Samsung's product selection, opinion leaders, and communication strategies. We suggest that the sports products, marketers, and owners provide feedback, making the three advertisements more effective. The selection of athletes for the advertisements demonstrates the core value of the Olympic Games). When the opinion receivers decode the meaning expressed in the advertisements, both behavior and cognitive learning theory have applied to the analysis. The communication campaign's effective decoding enabled the consumers to make quick decisions.

Development of an algorithm for determining the individual factor structure of gymnasts' preparedness for the selection of teams in sports aerobics

The purpose of the research is to develop an algorithm for team composition in sports aerobics and to determine the factor structure of the fitness of gymnasts in sports aerobics, taking into account the psychophysiological capabilities of athletes.&#x0D; Material and methods. The following research methods were used to solve the tasks: analysis of literary data; evaluation of the results of competitive activities; determination of functional and psychophysiological state [8–10], physical development and physical fitness, vestibular stability; pedagogical testing; methods of mathematical statistics using multivariate analysis and computer programs "ESXEL" and "SPSS".&#x0D; The results. For team composition in sports aerobics, we developed an algorithm for determining the possibilities of combining athletes into groups for team performances. The main feature of this algorithm was the use of multidimensional analysis tools for the selection of athletes for teams in sports aerobics. Based on the determination of the general structure of the athletes' fitness through factor analysis, individual factor values ​​of the fitness structure were determined for each athlete. Then a hierarchical cluster analysis of the test indicators was conducted and team compositions were selected based on the groups formed as a result of the cluster analysis. Next, programs for performances were created and training programs were developed for each group.&#x0D; Conclusions. The team selection algorithm based on the psychophysiological indicators of athletes is effective, accessible, and allows you to quickly determine the optimal options for combining athletes into groups for performances in various competitive categories; and therefore will contribute to increasing the efficiency of the training process and competitive performance.

Heart Rate Estimation in Sports Based on Multi-Sensor Data for Sports Intensity Prediction

The heart rate (HR) is the most common measurement of the cardiovascular system. It reflects not only the cardiovascular function, but also the degree of recovery, and has high reliability. The heart rate monitoring can be used in athlete selection, sports training, medical supervision, and fitness to avoid the blindness of exercise intensity arrangement, provide an objective quantitative standard for scientific fitness, and improve the sports performance through monitoring sports intensity. In order to accurately predict the sports intensity, this paper adopts ECG signals and pulse wave to learn an ordinal regression model that can utilize the order relation between different sports intensity level. The experimental results have demonstrated the effectiveness of the proposed sports intensity method.

Sources of information used by elite distance running coaches for selection decisions.

Talent identification and selection are critical components of competitive sport success. Despite the time, effort, and resources invested, the accuracy of selection decisions remains generally poor. While much of the scholarship in this area has focused on the factors discriminating skilled and less-skilled individuals, limited research exists on what information is used in the decision-making process for athlete selection. The current study seeks to gain a better understanding of the information used by elite distance running coaches when forming judgements for athlete selection. Ten semi-structured interviews with elite distance running coaches from across Canada were transcribed and analyzed using inductive thematic analysis. It was interpreted that coaches mainly gather information using their coach’s eye to determine an athlete’s ‘fit’ to the team. Coaches also use more objective information such as race times and movement analyses to assess performance and judge future ‘potential’. As well, the decisions were believed to be influenced by situational considerations at the time of the selection procedure. Specifically, these considerations affecting a coach’s selection included length of time to make a decision, personal limitations in decision-making abilities, and team circumstances. Interestingly, coaches recognized limitations in their selection practices and procedures and discussed some of their personal and system-level biases, highlighting their awareness of potential selection inefficiencies/inaccuracies. Overall, distance running coaches used a variety of techniques to gather information before a selection was made, relying on both subjective and objective information for crafting judgments. Findings are discussed in relation to implications for coaches, sport organizations, and talent identification and selection programs.

Sistem Pendukung Keputusan Pemilihan Atlet Renang Sumatera Utara Untuk Kejuaraan Tingkat Nasional Dengan Metode ARAS Dan ROC

In this study, researchers used the ROC method and the ARAS method while the criteria used in the selection of North Sumatran swimming athletes for the national championship were Physical, Age, Weight, and Distance. A decision support system is a computer-assisted decision support process to assist decision support by using certain data and models to solve some unstructured problems. The calculation results from the application of the ROC method &amp; the ARAS method were declared successful in testing the system in the assessment and ranking of the selection of North Sumatran swimming athletes for the national level championship based on the criteria inputted for alternatives. Then provide a definite assessment answer for swimming athletes who represent North Sumatra for the national level championship based on the final score obtained.

Design of Growth Trend Map of Children and Adolescents Based on Bone Age.

Accurate height prediction has important reference significance for the development of children and adolescents and the selection of athletes. The current mainstream height prediction methods include the B-P (Bayley–Pinneau) method and the TW2 (Tanner–Whitehouse) method. A large number of documents show that the B-P method and the TW2 method have relatively large deviations in the lifelong height prediction results of Chinese children and adolescents. Based on the data collected by the Chinese Adolescent Students' Physical Fitness and Growth and Development Health Project in Zhejiang's primary and secondary schools, this paper proposes a graph of height growth trends based on bone age. The height map of age has more reference value. Aiming at the feasibility of the height data in the statistical results, the interpolation prediction method is used to verify the data, and the height growth trend graph is drawn through the method of fitting. Validation results with actual data show that the average error of the lifetime height prediction of the height growth trend map proposed in this paper is 2.1 cm, which is 1.4 cm lower than the 3.5 cm error predicted by the B-P method and 0.4 cm lower than the 2.5 cm error predicted by the TW2 method.

Anthropometric Linear Measurements of Female Athletes in the Italian National Athletic Teams

Anthropometry is essential to understand the predisposition of an athlete to practice a specific sporting activity, to assess their fitness, and in association with functional parameters, to identify any correlations between their anthropometric profile and their sport performance. Here, we present the anthropometric profiles of athletes of the Italian national teams, who represented Italy in the 2019-2020 competitive season in the following sports: artistic (n=4) and rhythmic (n=12) gymnastics; distance swimming (speciality: 100 m freestyle) (n=14); synchronized swimming (n=10); and basketball (n=6). We also consider a group of sedentary women (n=22) for comparisons. The following anthropometric measurements were taken for each woman: stature; anterior trunk height (i.e., suprasternal- symphysion distance); chest circumference passing through the mesosternal point; biacromial diameter (i.e., akromion-akromion distance); wrist circumference; abdominal circumference passing through the omphalion and the lumbale; hip circumference; height of lower limb (i.e., epitrochanter-planta distance). Height was a selective factor in both basketball, which requires tall athletes, and artistic gymnastics, where in contrast, well-muscled athletes of small stature are required. In aquatic sports, the constitutional habitus is characterized by good development of the upper body compared to the lower limbs. The selection of elite athletes takes place primarily through anthropometric analyses, although other functional and psychological factors also influence their sports performance.

The Characteristics of Building Long-Term Training Systems for Footballers in Foreign Countries

A scientific understanding of building a rational system of long-term training for footballers in Ukraine, as well as ways of its practical implementation, should rely on foreign experience in this field to be effective. The article aims to theoretically and methodologically justify foreign experience in building a rational system of long-term training for footballers. Each country demonstrates its options for solving this particular problem. The countries occupying leading positions in European football have well-established organizational and management systems for training and selection of athletes in the process of long-term improvement. In general, all of the above-mentioned countries use similar systems with their own specifics stemming from national traditions, economic and logistical conditions. Differences in the training of footballers from different countries are due to the different role and degree of participation of governmental, non-governmental and private structures.

Психофізіологічні характеристики спортсменів як чинник системи підготовки у водному поло

At the present stage of sports development the intensity and volume of training sessions have increased to physiological maximum, requirements for technical and tactical training of highly qualified players and the duration of their stay in the sports arena have increased, so coaches, scientists and doctors are looking for reserves to improve performance. In recent years, differentiated approaches to the training of athletes at different stages of long-term training, taking into account the psychophysiological characteristics of athletes, have been successfully implemented in various sports. Given these trends, there is an urgent question of approach to technical and tactical training of water polo players, taking into account their psychophysiological characteristics. The purpose of the study was to determine the role of individual psychophysiological characteristics in the system of training athletes in water polo. Materials and methods. In the course of the research, we used the methods of theoretical analysis and generalization of literary sources, documentary method. In order to conduct a survey of water polo coaches, we conducted a survey. In order to analyze and process the results of the questionnaire, we used the methods of mathematical statistics. Results and discussion. To conduct a survey of water polo coaches, we developed a questionnaire that included questions about the specifics of water polo training, identifying the most talented water polo players in the early stages of long-term training and psychophysiological characteristics in the water polo training system. In the course of the research, we conducted a survey of water polo coaches on the peculiarities of taking into account the individual psychophysiological characteristics of athletes in the system of training in water polo. As a result of the survey, it was determined that psychophysiological characteristics are an important component of the system of training athletes in water polo. The most significant psychophysiological characteristics for water polo players of different game roles are determined. Conclusion. The study found that all coaches we interviewed (100%) believe it is necessary to take into account the psychophysiological characteristics of athletes in the selection and construction of training athletes in water polo. Psychophysiological characteristics of athletes are one of the most informative criteria for gifted athletes in water polo in the early stages of long-term training, according to 43% of respondents, along with anthropometric data of athletes (14%) and motivation for water polo (29%). As a result of the survey, respondents noted the most effective psychophysiological characteristics for different game roles, in particular for goalkeepers it is the speed of simple and complex motor reactions, for defenders – the ability to anticipate. For midfielders it is speed of thinking and decision making and for attackers it is speed of motor reactions and speed of thinking

Key Feature Extraction Method of Electroencephalogram Signal by Independent Component Analysis for Athlete Selection and Training.

Emotion is an important expression generated by human beings to external stimuli in the process of interaction with the external environment. It affects all aspects of our lives all the time. Accurate identification of human emotional states and further application in artificial intelligence can better improve and assist human life. Therefore, the research on emotion recognition has attracted the attention of many scholars in the field of artificial intelligence in recent years. Brain electrical signal conversion becomes critical, and it needs a brain electrical signal processing method to extract the effective signal to realize the human-computer interaction However, nonstationary nonlinear characteristics of EEG signals bring great challenge in characteristic signal extraction. At present, although there are many feature extraction methods, none of them can reflect the global feature of the signal. The following solutions are used to solve the above problems: (1) this paper proposed an ICA and sample entropy algorithm-based framework for feature extraction of EEG signals, which has not been applied for EEG and (2) simulation signals were used to verify the feasibility of this method, and experiments were carried out on two real-world data sets, to show the advantages of the new algorithm in feature extraction of EEG signals.

Protective Effect of Amino Acids on the Muscle Injury of Aerobics Athletes after Endurance Exercise Based on CT Images.

During the training process, the aerobics athletes gradually increase their technical movements, the appreciation of the movements has been gradually improved, and the injuries of the athletes themselves have also gradually become serious. Based on CT image analysis, we study the protective effect of amino acids on aerobics athletes' muscle injury after endurance exercise. There are three major substance metabolism disorders in patients with muscle sclerosis, which are mainly manifested as decreased glucose tolerance and insulin resistance. Some patients develop muscle-derived diabetes. At the same time, the synthesis of lipids such as cholesterol and apolipoproteins decreases, the production of ketone bodies increases and the body uses more ketones for energy. The BCAA/AAA factor refers to the branched-chain amino acid/aromatic amino acid (BCAA/AAA) value. In amino acid metabolism, plasma albumin decreased significantly, the ratio of amino acids was unbalanced, and BCAA/AAA decreased, which was more likely to induce muscular encephalopathy. Using computer tomography (CT) to study the protective effect of amino acids on muscle injury, 32 aerobics athletes were randomly divided into an intervention group (Ig) and a control group (CG), each with 16 people. After 64-slice spiral CT scanning of muscles and three-dimensional reconstruction, the intervention group and the control group participated in aerobic endurance training 3 weeks in advance to establish a muscle microinjury model. The intervention group took the preprepared BCAA, while the control group did not take it. After three weeks of training, there will be one hour and three hours of aerobics competition. We need to detect changes in blood glucose (BS), creatine kinase (SCK), lactate dehydrogenase (LD), alanine (ALA), and alanine aminotransferase (AA) before and after exercise and 1 hour after exercise and record AVS athletes' pain analysis table. We successfully established the muscle injury model, letting all athletes' VAS score in 6–8 points; after 1 hour of exercise, the measurement results were the same as those of 2 hours. Therefore, after endurance training, the blood glucose content of the intervention group gradually decreased and returned to the original level after 2 hours of exercise, while the control group was lower than the level of exercise after 2 hours of exercise; the content of alanine in the two groups decreased more after 2 hours of exercise; the results of serum creatine kinase in the intervention group were higher than those in the control group after exercise. In the intervention group, lactate dehydrogenase increased rapidly at 2 hours after exercise; the alanine aminotransferase in the intervention group increased after exercise, but there was no significant change in the control group. It is also concluded that the longer the exercise time and the more energy consumption, the more effective the branched-chain amino acids supplement will be. The obtained imaging data can provide a more intuitive and accurate basis for the scientific selection of athletes, and amino acids can promote the synthesis of hormones, accelerate the synthesis of proteins and other products, reduce the content of creatine kinase in the blood, and protect the rapid recovery of muscle damage.

Speed, Change of Direction Speed, and Lower Body Power in Young Athletes and Nonathletes According to Maturity Stage

The aim of this study was to establish the role of maturation on the development of physical performance in adolescent athletes and nonathletes. The total studied sample consisted of 231 participants (131 athletes: 72 boys with an average chronological age of 13.53 ± 0.7 and 59 girls with an average chronological age of 11.97 ± 0.8; 100 nonathletes: 47 boys with an average chronological age of 13.73 ± 0.47 and 53 girls with an average chronological age of 11.93 ± 0.33), distributed according to their biological maturity stage (Pre-, Mid-, and Post-Peak Height Velocity [PHV]) and to their gender. The assessment of physical performance was performed using the following tests: Countermovement jump (CMJ), countermovement jump with arm swing (CMJA), squat jump (SJ), five-jump test (5JT), 5 m sprint (5 m), 10 m sprint (10 m), 20 m sprint (20 m), T-test, Zig Zag, and Slalom. The differences in athletes according to biological maturity were identified in all variables except for 5 m (p = 0.33) and Slalom (p = 0.07), while in nonathletes the differences were found in 5JT (p = 0.01), 5 m (p = 0.02), 10 m (p = 0.01), and 20 m (p = 0.01) tests. Additionally, a significant interaction of gender and biological maturity was detected for CMJ (p = 0.03), CMJA (p = 0.01), and Zig Zag (p = 0.05) in athletes. The findings of the current study confirm the importance of maturity status in the assessment of physical performance. As a consequence, a more rational selection of talented athletes could be provided, also enabling the timely development of physical performance in nonathletes as a “window of opportunity”.

Relationship between digit ratio of 2D:4D and The physical health among college students of han ethnicity in Southern Fujian

Introduction: Studying the association between finger length ratios of 2D:4D and the physical health among college students of Han ethnicity in Southern Fujian can provide an indirect macrobiology reference index for early predictions of physical health status. Material and Methods: A total of 835 students in Southern Fujian were selected as test subjects through a stratified cluster sampling method. The 2D:4D ratio was recorded using physical measurement methods. The body mass index (BMI), vital capacity, 50-m run, and sit-and-reach test results were collected and analyzed based on the National Student's Health Standards. Results: Among male Han college students in Southern Fujian, the left 2D:4D ratio was negatively correlated with the vital capacity and sit-and-reach test results, while the right 2D:4D ratio was negatively correlated with the vital capacity, 50-m run, and sit-and-reach test results, as well as the comprehensive evaluation result of physical health. Among female Han college students in Southern Fujian, the left 2D:4D ratio was positively correlated with BMI and negatively correlated with the vital capacity, 50-m run, and 800-m run results, as well as the comprehensive evaluation result of physical health. The right 2D:4D ratio was negatively correlated with the vital capacity, 50-m run, 800-m run, and sit-and-reach test results, as well as the comprehensive evaluation results of physical health. The comprehensive evaluation results of physical health were statistically significant differences among low, medium, and high bilateral 2D:4D groups of female students, with poorer results in the high 2D:4D group than that of the medium and low 2D:4D groups. Discussion and Conclusion: The bilateral 2D:4D ratio of female and right 2D:4D ratio of male Han college students in Southern Fujian has a correlation with the comprehensive evaluation of physical health, which can serve as one of the reference indexes for adolescents' early health education, physical health monitoring, dietary intervention, and athlete selection.

ROLL OF SOMATOTYPE IN SPORT SELECTION

Somatotype reflects the overall appearance of the body and gives significance to its overall morphological status and may be significant for selection in sports activities and maybe may lead to avoiding mistakes for selection of potential athletes and rejecting of some children or incorrectly selecting. A puberty period of boys is characterized by changes of somatotype because of accelerated skeletal growth and increase of muscle mass what is directly connected with increasing the maximum oxygen supply and improving endurance in sports. Because the training for running on middle distances aim at improving aerobic energy systems can lead to increase endurance, this research was conducted to determine the effects of the training process for runners on the middle distances on the somatotype to obtain guidelines for selection in the youth age of the male population and to avoid possible errors in determining talent and directing into a wrong sports branch. The male subjects aged 16 years were divided into two groups - the experimental group consisted of 86 respondents and the control group of 82 respondents. After eight weeks of the training program, there were positive effects on values of variables VO2max and running on 1500m. The training process for runners on middle distances had positive effects on the somatotype of respondents and can be used to change the somatotype because the statistical analysis of the χ2 test showed a statistically significant difference between the initial and final state of somatotype distribution of the experimental group after the training process increased the percentage of respondents who have a talent for sport, then those who have predispositions for endurance sports and predispositions for sports.