Young Players Research Articles

The Features of changes in the physical fitness of football players 13-14 years in the preparatory period of the annual macrocycle under the influence of a typical training program

The article deals with the effectiveness of using a standard football program for the stage of preliminary basic training in improving the overall and special physical fitness of young football players 13-14 years. The relevance and practical importance of this study is due to the need to improve the quality of existing programs for the construction of the training process of athletes specializing in football, at different stages of long -term sports training, especially in the initial stages of this process. In connection with the above, an assessment of the impact of a standard football program for the stage of preliminary basic preparation on the indicators of general and special physical fitness of football players 13-14 years during the preparatory period of the annual macrocycle was carried out. It is proved that the use of the program athletes of the said program did not contribute to a significant improvement of their general and special physical fitness. To complete the study, there was a significant increase in only individual indicators, namely: the level of physical work capacity and aerobic capabilities by 10%, power capacity for 23 %, 19% agility, the result in the ball of the ball with the ball and the level of special physical fitness by 9%of the change in other parameters were insignificant and ranged from 1%to 6%. The results indicated the lack of efficiency of the typical program of construction of the training process of young football players at the stage of preliminary basic training and the need for its appropriate correction to improve their overall and special physical fitness.

Methodological aspects of training systems of junior taekwondist

The article analyzes the basis of achievements in the field of promotion of theoretical and methodological bases of sports training on the basis of taekwondo; it is necessary to organize these methodical exercises before the training of taekwondo; the necessity of the processes of natural development and adaptation to the physical advantages of young taekwondo players; the necessity of scientific equipment for the stimulus of training advantages in the minds of emotional states is shown. The specific features of the preparation of taekwondo fighters with the consideration of morphofunctional and psychophysiological features of athletes in the initial-training process are revealed. The most important aspects of taekwondo training or contribute to the optimization of the level of training of athletes are identified. Among the various directly the field of psychophysiology of sports is one of the most promising fields for the search for new approaches to the preparation of highly qualified athletes. The same observation of psychophysiological characteristics gives additional information about the functional state of the athlete for different minds of activity. One of the key nutrients is the prediction of potentially high results in a particular sport on the basis of a comprehensive study of mental and mental strengths and anatomical and physiological tasks. The methodology of SAN can be used to monitor the dynamic emotional state of the athlete, reflected in the indicators of self-esteem, activity and mood during the training period. The results of the psychological test revealed the dependence of the indicators of self-esteem, activity and mood on the indicators of physical activity. The effectiveness and efficiency in taekwondo is determined by the demonstration of high agility, the unprecedented strength of the attackers and defenders, the strength of the tactical and emotional fight. Considering that the effectiveness of taekwondo activities depends on the athlete's ability to jump, we analyze the information that is important to understand the psychophysical functions of the control of the athlete's physical position. this correction of the training process.

Longitudinal study on the development of speed, leg explosive power, aerobic endurance, and technical skill of young football players in talented and non-talented categories: implications for talent identification?Este estudio longitudinal tuvo como objetivo evaluar el desarrollo y las diferencias en la velocidad, la potencia explosiva de las piernas, la resistencia aeróbica y las habilidades técnicas entre jugadores jóvenes categorizados como

This longitudinal study aimed to assess the development and differences in speed, leg explosive power, aerobic endurance, and technical skills among young players categorized as talented and non-talented. A total of 44 players aged 11-14 years, training in an amateur club, were classified into talented (n = 23) and non-talented (n = 21) groups. Furthermore, physical abilities and technical skills were measured over 1 year of training at 3 intervals, namely T0 (January), T1 (July), and T2 (December). The results showed that speed, leg explosive power, aerobic endurance, and technical skills, increased in both talented and non-talented players by 10.23% and 15.18%, 11.27% and 11.07%, 15.88% and 14.85%, as well as 11.71% and 9.51%, respectively. Based on observations, talented players showed emphasis on dynamic movement, changes in direction, and essential technical skills during the training period. Conversely, non-talented players prioritized speed over other components in football. Keywords: longitudinal, speed, explosive power, aerobic endurance, football

Can heat conditions affect the heart rate responses, perception of effort, and technical performance of young male football players during small-sided games? a comparative study

BackgroundSoccer coaches often employ small-sided games (SSGs) to elicit both physiological and technical responses from players. However, numerous contextual factors can influence the outcomes of these games. This comparative study aimed to investigate how environmental temperature (< 21ºC and > 29ºC) impacts heart rate responses, perception of effort, and technical performance in young male football players during SSGs.MethodsThis study compares temperatures below 21ºC (∼ 20.4 ± 0.4ºC) with temperatures above 29ºC (∼ 29.7 ± 0.6ºC). This repeated measures study design involved 60 male football players at a trained/developmental level, selected from under-16 and under-19 teams. It aimed to assess the effects of the 3v3 format, conducted repeatedly under conditions of 21ºC and above 29ºC. Throughout the games, mean heart rate responses (HRmean), measured via heart rate sensors; rate of perceived exertion (RPE), assessed using the CR-10 Borg scale; and successful passes and lost balls, tracked through an ad hoc observational analysis tool, were monitored.ResultsNo significant interactions were observed (time*age group) in meanHR (F = 0.159; p = 0.691; \\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\:{\\eta\\:}_{p}^{2}$$\\end{document}=0.003), RPE (F=0.646; p=0.425; \\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\:{\\eta\\:}_{p}^{2}$$\\end{document}=0.011), number of passes completed (F=0.204; p=0.654; \\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\:{\\eta\\:}_{p}^{2}$$\\end{document}=0.003), and number of lost balls (F = 0.157; p = 0.694; \\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\:{\\eta\\:}_{p}^{2}$$\\end{document}=0.003). Overall, significantly higher heart rate responses in mean HR (p<0.001) and RPE (p<0.001) were observed at temperatures above 29ºC, while significantly more passes were completed at temperatures below 21ºC (p<0.001).ConclusionsHeat conditions significantly intensified the psychophysiological responses in players, concurrently leading to a significant impairment in the number of passes. Coaches should contemplate implementing mitigation strategies to avert performance declines during heat conditions when utilizing SSGs.

The influence of age, sex and player position on skill demands in junior Australian football

ABSTRACT This study aimed to investigate how ecological constraints influence individual player skill demands in community-level junior Australian Football (AF). Footage from 68 junior AF games, incorporating 1874 unique players, were analysed for individual skill demands such as disposals, kicks, handballs, tackles, marks, and shots at goal per player per game. Multiple linear mixed effect models were created for each skill, using player as a random effect. The impact of age, relative area per player (RAPP), number of players on the team, quarters in midfield, and weather on skill demands was assessed in U9-U14 boys. Finally, the influence of sex on the same skills was explored in U11-U14 boys and girls. Younger players were found to have fewer disposals and handballs, but more tackles, per player than older players (all p < 0.05). Further, more quarters in the midfield increased all skill demands (all p < 0.001). Finally, girls had fewer disposals and marks, but more tackles, per player than boys (all p < 0.05). Overall, age, sex, and position significantly impacted players’ exposure to skills in junior AF. Game designers should consider methods to improve skill involvement and reduce tackling exposure early in the junior pathway, with further emphasis on the girls’ game.

High prevalence of harmful drinking habits and gambling among professional rugby players: mental health symptoms and lifestyle risks among New Zealand Super Rugby players—a cross-sectional survey

ObjectivesDetermining the prevalence of mental health and lifestyle risk factors (smoking, alcohol consumption, recreational drug use, gambling, family violence and anger management) in New Zealand (NZ) male professional rugby players.Study...

HUBUNGAN PARENTAL-PEER ATTACHMENT DENGAN SELF-ESTEEM PADA PEMAIN INTERNET GAMING

There are many internet-based activities, one of which is internet gaming, which, at a certain level of frequency, can lead individuals to internet addiction. This research, conducted with meticulous attention to detail, aims to determine the relationship between parental-peer attachment and self-esteem as two factors that are closely related to internet addiction behavior. The study was meticulously conducted on 38 young adult male and female internet gaming players using the Inventory of Parent and Peer Attachment-Revised (IPPA-R) and the Self-Esteem Scale (SES). Data were rigorously analyzed using one-tailed Spearman statistical analysis. The results show a positive relationship between Parental-Peer Attachment and Self-Esteem in internet gaming players. The alienation dimension in Mother, Father, and Peer Attachment has the most significant relationship. Self-competence and Self-liking dimensions have a negative relationship, so that these two dimensions will decrease or increase if one dimension experiences a decrease or increase. Further studies on the other psychological factors that underly internet gaming behavior potentially support the prevention of addiction.

Optimizing young tennis players' development: Exploring the impact of emerging technologies on training effectiveness and technical skills acquisition.

The research analyzed the effect of weekly training plans, physical training frequency, AI-powered coaching systems, virtual reality (VR) training environments, wearable sensors on developing technical tennis skills, with and personalized learning as a mediator. It adopted a quantitative survey method, using primary data from 374 young tennis players. The model fitness was evaluated using confirmatory factor analysis (CFA), while the hypotheses were evaluated using structural equation modeling (SEM). The model fitness was confirmed through CFA, demonstrating high fit indices: CFI = 0.924, TLI = 0.913, IFI = 0.924, RMSEA = 0.057, and SRMR = 0.041, indicating a robust model fit. Hypotheses testing revealed that physical training frequency (β = 0.198, p = 0.000), AI-powered coaching systems (β = 0.349, p = 0.000), virtual reality training environments (β = 0.476, p = 0.000), and wearable sensors (β = 0.171, p = 0.000) significantly influenced technical skills acquisition. In contrast, the weekly training plan (β = 0.024, p = 0.834) and personalized learning (β = -0.045, p = 0.81) did not have a significant effect. Mediation analysis revealed that personalized learning was not a significant mediator between training methods/technologies and acquiring technical abilities. The results revealed that physical training frequency, AI-powered coaching systems, virtual reality training environments, and wearable sensors significantly influenced technical skills acquisition. However, personalized learning did not have a significant mediation effect. The study recommended that young tennis players' organizations and stakeholders consider investing in emerging technologies and training methods. Effective training should be given to coaches on effectively integrating emerging technologies into coaching regimens and practices.

Effects of Ramadan Fasting on Sleep and Physical Fitness among Young Female Handball Players.

This study examines the potential impact of Ramadan fasting on sleep patterns and physical fitness in under 14 (U14) and under 17 (U17) female handball players. For this study, sixty-five female handball players' (U14, n = 33 and U17, n = 32) sleep habits were assessed before (BR) and during the first (R1) and last weeks (R4) of Ramadan using: the Pittsburgh Sleep Quality Index (PSQI), the Insomnia Severity Index (ISI), and the Epworth Sleepiness Scale (ESS). Physical ability tests including balance and jumps were conducted throughout these periods.; Results: During Ramadan, both groups noted significant increases in PSQI and ISI scores during R1 (p < 0.01 and p < 0.05, respectively) and R4 (p < 0.05 and p < 0.05, respectively) compared to before Ramadan (BR). For the U14 group, a significant increase occurred in ESS scores during R1 (p < 0.01) and R4 (p < 0.05), whereas for the U17 group, this increase was limited over the R1 period (p < 0.05). In contrast, for all physical ability parameters, both groups showed no significant difference during R1 and R4; Conclusions: During adolescence, Ramadan fasting may alter sleep patterns in young female athletes but appears to have no effect on their performance in short-duration exercises.

Study of the Effect of Rotator Cuff Strengthening Exercises on Power, Endurance, Speed, Stability and the Coordination of Limb Movement in Badminton Players (Experimental Study)

Background A standard Study of the effect of Rotator cuff strengthening exercises on power, endurance, speed and stability and the coordination of limb movement in badminton players (Experimental study) in young badminton players. Aims: The aim of this study was rotator cuff strengthening exercise on speed and the coordination of limb movement in badminton players. Setting: The research was conducted in various badminton clubs, encompassing a diverse population of young players aged 18- 25 years. The badminton clubs were selected to represent different analog and exercise protocol to ensure a comprehensive analysis. Design: Study will be quasi experimental. It is an experimental type of study, based on pre and post measurements. In this type of study take pre data by using data scale and then start exercise protocol to develop the strengthen the player and then again taking post data, and analyzed the result.

The effect of resistance training focused on eccentric phase and interval exercises in young football players

The cardiovascular system, strength, speed, and agility are essential for a football player to perform better. For this purpose, finding the best and shortest way has always been a challenge. Therefore, this study aims to examine the effect of resistance training focused on eccentric phase and interval exercises on strength, agility, speed, and cardio strength in young football players.40 young football players are divided into two groups. The control group (CG) received only typical football exercises (by their coach), and the experimental group (EG) experienced eccentric exercises combined with interval aerobic training. To measure strength, agility, speed, and cardio strength, the Squat test, T-test, 60-meter sprint, and Cooper test were performed, respectively. To compare pre and post-test, paired sample t-test was utilized, and compare the two groups ANCOVA and Quade Nonparametric Analysis of Covariance test were used. The paired sample t-test showed a significant difference between pre and post-test in strength and cardiac strength in both groups. However, no significant difference was observed in speed and agility in CG. However, in EG, there was a significant difference between the pre and post-test in speed and agility variables. Also, according to the ANCOVA and Quade Nonparametric ANCOVA results, there was a significant difference between CG and EG in all variables. Eccentric and interval aerobic training could be more effective than typical football exercises on strength, cardio, speed, and agility. Football players can use the present program training to improve the essential physical factors. Keywords: Strength, Agility, Sprint, Male.

Training loads and microcycle periodisation in Italian Serie A youth soccer players

ABSTRACT Microcycles are fundamental structures for training prescription and load management, helping to optimise training effects and performance. This study quantified external and internal loads of Italian Serie A youth soccer players across competitive weeks and their periodisation within microcycles. Data were collected from 90 players belonging to four age groups (under-19, -17, -16, -15) across a season. Methods of monitoring external [duration and global navigation satellite systems (GNSS)] and internal load [heart rate (HR) and rating of perceived exertion (RPE)] were employed. Linear mixed models determined differences in training loads across age groups, training days and player positions. Under-19 and under-17 players trained five times per week, while younger players trained four times. Late-stage academy players (under-19 and -17) demonstrated higher weekly accumulated external and sRPE training load compared to their younger counterparts (p < 0.05 between groups). Weekly accumulated HR internal loads were higher in under-15 players (p < 0.05 between groups). Marked fluctuations of daily load were observed across microcycles in under-19 and under-17 groups (p < 0.05 between days). These findings highlight progressive increases in training load throughout the development pathway, with late-stage academy players training with higher frequency, volume and marked periodisation compared to younger players.

Assessing Lower-Extremity Visuo-Motor Reaction Time in Young Male Soccer Players: Test-Retest Reliability and Minimum Detectable Change of the Brain Pro System.

A reliable, versatile means of assessing visuo-motor reaction time (V-MRT) is important to football (soccer) players for many reasons, including the fact that faster V-MRT is a critical sport skill that may even play a role in reducing common sports injuries to the lower muscle extremities that can be associated with lost time on the field. We aimed to determine the test-retest reliability and minimum detectable change (MDC) of the Brain Pro System for assessing lower-extremity V-MRT in young male football players. We had 68 participants (M age = 16.35, SD = 1.71years) perform two assessment sessions one-week apart. For test-retest reliability, we calculated a one-way intra-class correlation coefficient (ICC) at the 95% confidence interval and provided the standard error of measurement (SEM) and minimum detectable change (MDC) (MDC = SEM × 1.96 × √2) for V-MRTs. We obtained excellent V-MRT test-retest reliability for dominant lower-extremity, non-dominant lower-extremity, and dominant and non-dominant lower-extremities (ICC2,1 = .93, 95%CI = .89-.96; ICC2,1 = .94, 95%CI = .91-.96; ICC2,1 = .96, 95%CI = .94-.97; respectively). The calculated MDC for the dominant lower-extremity V-MRT, the non-dominant lower-extremity V-MRT, and dominant and non-dominant lower-extremities (random) V-MRT were 1.21seconds, 1.13seconds, and 1.21seconds, respectively. Brain Pro System had excellent reliability for assessing lower-extremity V-MRT in young male football players. The MDC values at the 95% confidence level (MDC95) we obtained were reliable for assessing clinically meaningful V-MRT changes.

Anthropometric, body composition and physical performance of elite young Italian football players and differences between selected and unselected talents

Football is a team sport played worldwide and specific competition demands are needed since young categories. Several physiological and psychological aspects could influence the selection process, and adolescent investigations still be necessary. This retrospective study aims to compare anthropometric and performance features between selected and unselected adolescent footballers. The sample size was 78 players from U10 to U12 categories. Maturation, RAE, anthropometry, and physical performance (repeated sprint ability (RSA), 15-m sprint, countermovement jump (CMJ) and Harre's test) were evaluated (mean ± SD). 33.3 % of players were selected (height = 144.06 ± 6.74 cm, weight = 35.38 ± 4.56 kg) and 66.7 % were unselected (height = 143.06 ± 8.34 cm, weight = 35.94 ± 6.24 kg). Selected U10 were leaner and got the peak of height velocity (APHV) earlier (p < 0.05) than unselected U10 players, while U11 selected were faster than unselected (p < 0.05). Also, the RSA test, APHV and the humeral width well discriminated among the selection (χ2(3) = 12; p < 0.01). Football field technicians involved in scouting need quantitative and qualitative information that could help to predict talented players. Although physical performance test results and body height led to decisions, further anthropometric features and maturation could provide relevant support.

A multivariate regression analysis of a comprehensive rehabilitation program and performance improvement in young female volleyball players

Purpose: This study aimed to investigate the efficacy of a comprehensive rehabilitation program tailored for college female volleyball players in India, specifically focusing on its impact on vertical jump performance. Material and Methods: Twenty-seven female college volleyball players participated in the study, undergoing a preseason rehabilitation program comprising various exercises targeting strength, power, stability, agility, and flexibility. Pre- and post-rehabilitation assessments were conducted to evaluate changes in vertical jump height using a Vertec vertical jump measuring device. Statistical analysis included multivariate regression analysis and paired t-tests. Results: The multivariate regression analysis revealed significant positive associations between several rehabilitation components, including squats, depth jumps, and plyometric circuits, and improved vertical jump height (p &lt; 0.01). Paired t-test results indicated a significant increase in vertical jump height post-rehabilitation (p &lt; 0.0001), with a mean difference of 4.863 cm. Strong positive correlations were observed between baseline and post-rehabilitation vertical jump measurements (r = 0.9629). Conclusions: The findings demonstrate the effectiveness of the comprehensive rehabilitation program in enhancing vertical jump performance among college female volleyball players in India. By targeting multiple facets of physical fitness and movement quality, the program facilitated significant improvements in explosive lower body strength and power, essential for volleyball performance. These results underscore the importance of tailored rehabilitation interventions in optimizing athlete capabilities and achieving success on the volleyball court.

Correlation Between Online Game Addiction and Social Adjustment in Teenage Mobile Legend Players

This research aims to find out whether there is a relationship between online game addiction and social adjustment in teenage mobile legend players. This research uses a quantitative correlation approach with a sampling technique using Accidental Sampling. a total of 176 samples. From the results of data analysis, the correlation coefficient (rxy) was obtained with a positive value, namely 0.473, with a sig value. (p calculated) = 0.0001 or p &lt; 0.05 which shows that the relationship between the two variables is significant. This indicates that young mobile legend players are quite capable of controlling and controlling when playing mobile legend games.

Pedagogical aspects of the formation of psychological training of young tennis players

Pedagogical aspects of the formation of psychological training of young tennis players

Evaluation of Sleep Behaviors in Male Football Players Participating in Youth Football Leagues

This article addresses a research study aimed at evaluating the sleep behaviors of young football players in Turkey. The research was conducted using a correlational survey design. The population consisted of male football players participating in the Turkey Football U 19 Elite A, U 17 Elite A, U 17 Elite B, U 19 Regional Development, U 17 Regional Development, and U 16 Development leagues, with a sample size of 203 players. Statistical methods such as normality analysis, Mann-Whitney U test, and Kruskal-Wallis H test were used for analysis. The study found no statistically significant differences in the variables of football year, position status, training day, regular medication use status, education level, and sleep duration among young football players. The data revealed that young players who stayed with friends at home or alone had higher sleep quality compared to those staying with their families at home. When analyzed according to the computer and phone usage variable, except for the sleep disorder factor, all sub-dimensions favored those using computers and phones. Regarding the playing status in development leagues, significant results were found in the sports factor sub-dimension for U 19 Elite A and U 19 Regional Development league players in relation to sleep quality factors. According to ASBQ Total Score averages, the values of U 19 Elite A league players were more significant compared to U 17 Elite A league players and U 16 Development league players. Regarding the sleep problem status variable, players indicating sleep problems had statistically higher values in sleep quality factors, Habitual sleep efficiency factors, and ASBQ Total Scores. In conclusion, it can be stated that there is a direct relationship between sleep and performance among U 19 Elite A young football players, and they act with this awareness.

Influence of the constraints associated with the numerical game situations on the technical-tactical actions of U-11 football players in Spain

The aim of the present study was to analyse the influence of the constraints led approach (CLA) systems, such as the playing space, the number of players and the numerical game situations (superiority, equality and numerical inferiority) on the technical-tactical actions of U-11 players in small-sided games (SSGs). A case study was developed where two of the CLA constraint systems were applied on three SSG where the dimensions of the game space were modified (SSG1: 160 m2 ; SSG2 and SSG3: 155 m2 ) and the numerical game situation against the opposing team (SSG1: equality; SSG2 and SSG3: superiority/inferiority). The study sample consisted of U-11 players (n = 8) competing at federated level in Spain (10.25 ± 0.45 years; 2.21 ± 0.61 years of experience). The results of this study show an very strong degree of association between the game modalities and the way of obtaining the ball (2Ln(BFp10) = 10.06) and a strong association between the game modalities and the zone of origin of the ball (2 Ln(BFp10) = 6.02). It should be noted that a positive association was found between games modes and ball height in obtaining the ball (2Ln(BFp10) = 4.06); type of conduction (2Ln(BFp10) = 5.88); technical action (2Ln(BFp10)= 2.32) and efficiency (2Ln(BFp10) = 4.04). These data can help coaches to optimize the training process of young players by modifying the training tasks based on the constraint systems proposed in this study.

Can acute mobilization and oscillation training profit on the joint position sense and strength of the rotator cuff muscles in young tennis players?

The rotator cuff is a group of muscles and tendons that act to stabilize the human shoulder and allow for its extensive range of motion. This study aimed to compare the immediate effect and durability of mobilization and oscillation dumbbell (OD) training on the Joint Position Sense (JPS) and strength of rotator cuff muscles in young tennis players. Twenty-six tennis players were divided into two experimental groups. G1 only performed mobilization techniques while G2 only performed OD training, before, after and after one week of the protocols, the strength and JPS of the shoulder joint were measured with an isokinetic dynamometer. Repeated analysis of variance (RMANOVA) and Bonferroni post hoc test were used to examine the differences between the groups. The analysis of covariance was used to examine the differences between the groups. In general, the results showed a significant effect of both mobilization techniques and OD training programs on the JPS and internal and external rotation strength of young tennis players, but only one difference was observed between the two in external rotation for the eccentric/concentric action at 120°/sec (p=0009; ƞ2p= 0.32). Moreover, the main findings showed that mobilization techniques and OD improved internal and external rotations after the protocol and after one week when compared with baseline for the concentric/concentric and eccentric/concentric at 60°/sec and 120°/sec (p &lt; 0.05) with only one exception for the internal rotation concentric/concentric at 120°/sec for both groups (p &gt; 0.05). Based on this, it seems that in healthy tennis players, both one-session mobilization techniques and OD training can be used to improve JPS and strength. Keywords: Shoulder, Isokinetic, Torque, Resistance, Rotator cuff.