Purpose The purpose of this study is to overcome the shortcomings of 109C(Forward 4 ½ somersault) skill(Level 3.7) for two members of the men’s national diving team(YHR, KYN). Methods For qualitative analysis of the performed skill, three high-speed cameras and water-attached EMGs consisting of a total of ten placements were used. We instructed the two players to perform single-leg jump and double-leg jumps a total of three times each. Results The results of this study indicate that YHR and KYN appeared to increase their time or maintain the same time compared to the previous phase and displacement appeared higher when skill success occurred after the double-leg jump. The Shoulder & hip joints of YHR, KYN appeared larger in E2 and the hip joint of KYN appeared to increase in E1. Single-leg jump appeared similar or decreased the performed time of the previous phase in the last P5. YHR appeared larger only at a hip joint angle and KYN appeared smaller at the hip joint. The muscle activity(iEMG) of the two players appeared greater during skill failure than most of the muscles. Conclusions When perfectly performing 109C skills, the acquisition of medals in international competitions is possible. Therefore, in the future, it is necessary to study all of the variables that pertain to 109C.
Purpose The purpose of this study was to investigate the differences in physique and physical fitness according to maturity between primary and middle school baseball players. Methods Participants were 112 elite youth baseball players (49 primary school; 63 middle school). Skeletal age estimated maturity. Physique (height, arm span, thigh volume), body composition (weight, muscle mass and body fat), physical fitness (strength, power, agility, flexibility, coordination, anaerobic power and aerobic power) were measured. An independent sample t-test was used to conduct verify the difference between physique and physical fitness according to maturity. Results The results of analyzing physical and physical fitness according to maturity showed that there was a significant difference (p<.05) between the early maturation group and on-time group in primary school baseball players, body fat percentage, muscle mass percentage, sit-up, anaerobic power and reaction time. There was a significant difference between the early maturation group and the on-time group in the middle school baseball players, weight (p<.05), thigh volume (p<.05), fat mass (p<.05), muscle strength (p<.01), power (p<.05) and coordination (p<.05). Conclusions In conclusion, the maturity of a growing baseball player may be influenced by the performance, so maturity status should be considered when judging the performance of a growing baseball player, especially a middle school baseball player.
Purpose The purpose of this study was to investigate the badminton players psychological disturbance and coping strategies types and characteristics. Methods To achieve the purpose of this study, an open-ended questionnaires were used targeting 194 badminton players, 25 Q samples were selected by collected data as the self – statement. Q samples were classified depending on their subjective experience by P samples composed of active badminton players who had more than eight years of athletic career; this data were coded and analyzed by VARIMAX rotation. Results The results revealed by the Q methodology were below. First of all, the first type is named as (Internal Disturbance - Passive Coping) type. The first type is psychologically disturbed by internal factors, and negative about external coping strategies. Second, the second type showed the higher awareness of coping strategies than the other types; It was named as (Active Coping) type. Third, The third type recognized the burden of victory and self-confidence, and it was named as the type of (Victory Obsession). Conclusion In the badminton competition, the deterioration of concentration and judgment ability because of psychological disturbance has a serious effect on the performance. Therefore, based on the results of this study, it will be possible to improve the performance by appropriate psychological intervention through the characteristics of the athletes.
Purpose The purpose of this study is to analyze the performance contents of men's floor exercise and to provide basic materials for achieving excellent results at world competitions. Methods Teams ranked 1 - 12 who participated in the World Championships' floor movement group competition selected a total of 59 players by the convenience sampling method and carried out technical statistics, frequency analysis, member variable variance analysis, and post hoc analysis. Results First, as a result of frequency analysis of the difficulty of each group, all the teams ranked 1 to 12 liked the most difficulty of C and found that they do not like the F difficulty the most. Secondly, there was a difference in average for each group's start score, ranking 1st to 4th> 5th to 8th> 9th to 12th place. Thirdly, there was a difference in average of difficulty levels for each group B, C, E, and it became very significant with E difficulty.Results of post hoc analysis B difficulty (9th to 12th> 1st to 4th, 5th to 8th), C difficulty (9th to 12th> 1st to 4th), E difficulty (1st to 4th> 5th to 8th ·9th to 12th). Conclusion These results show that in floor exercise, the art of more than C difficulty and the connection technology of A, B, C, difficulty, E and F, difficult difficulty such as difficulty, creative and dynamic performance composition is excellent It clearly states that it is a condition for getting results.
Purpose The purpose of this study was to examine athletes’ psychological competition experiences. Methods For this study, 64 student athletes, attending universities located in Seoul and Chungcheongbuk-do, participated in the study by completing an unconstructed questionnaire. The data were analysed through content analysis method. Results As a result, 15 themes, such as morale loss, comparable performance levels, opponent irritation were collected and the themes were classified into three categories including objectives of psychological competition, requirements of psychological competition, and psychological battle. In match situations, athletes attempt to psychologically compete in order to achieve objectives such as opponent’s morale loss, induce carelessness, trigger agitation and anger, dispersion of attention, and distraction. Psychological competition among rivals is valid when the requirements, such as comparable performance levels, sensitivity to match situations, strong tenacity and confidence, understanding of opponent and oneself, mutual checks and balances, are met. Athletes attack and defend to win the psychological competition by utilizing opponents irritation, information distortion, unexpected behaviors, predicting and coping, pulling a poker face, exclusion of opponents, and self-focusing. Conclusion This study created a theoretical foundation for a profound understanding of athletes’ psychological competition, which is often found in sport fields. Furthermore, this study is meaningful in that it has raised a chance of interest concerning psychological interaction between players in match situations.
In sport context, the motivational climate created by significant others (e.g., coachs and peers) has been influences on the athletic-student's motivation, engagement, performance, and skill development. Collective efficacy is important for team performance because it influences a group's task choice, effort expenditure, persistence in the face of failure, and resistance to discouragement. This study was to examine the influence of peer motivational climate (i.e., task-involving and ego-involving motivational climate) and coach autonomous support for basic psychological need satisfaction and collective efficacy. In the study, participants were 289 athletic-students' of team sports. In the study then, questionnaire was assessed using by the correlation and path analysis. The results showed that task-involving motivational climate significantly predicted of collective efficacy, while ego-involving motivational climate were negatively predict to the collective efficacy. The results suggest the importance of considering peer influence in addition to coach influence when examining motivational climate in team sport.
The purpose of this study was performance improvement through analysis of movement in elite field hockey players regarding positions using real-time GPS monitoring for compared training game and 2014 Incheon Asian Games. Fifteen elite women field hockey players (Defender: 4, Mid-fielder: 6, and Forward: 5) participated in this study. There were 2014 Incheon Asian Games Korean national team. Real-time GPS system analysis was completed during 10 training game appearances 5 2014 Incheon Asian Games appearances. The results of this study showed that in training game mid-fielder>forward>defender for 3, 4, 5, and 6 zone at speed zone by moving distance, in 2014 Incheon Asian Games forward>mid-fielder>defender for 6 zone at speed zone by moving distance. And moving distance by quarter increased all position in 2014 Incheon Asian Game more than training game. Therefore, These data might be useful to analysis of movement in field hockey players. Moreover improved performance and individual exercise ability by feedback for players distance, heart rate, and exercise trajectory. Thus, Gold-medal won at the 2014 Incheon Asian Games in field hockey.
This study was purposed to explore psychological change and regulation process during badminton competition. The data were conducted using group interviews and participation observations who 18 K college badminton players. The data were analyzed using open, axial, and selective coding based on grounded theory method (Strauss & Corbin, 1998). The results were as follows: Open coding results, 89 concepts, 44 subcategories, and 18 categories emerged as psychological change and regulation process during badminton competitions. Axial coding results, the categories are showed structural relationships such as performance, score, psychological momentum, the importance of competition, court environment, physical condition, competition strategy, psychological preparation, past experience, outcome expectation, psychological disturbance, psychological skills, game situation-changing strategy, support-seeking strategy, significant others' behavior, the opponents' behavior, psychological resilience, and maintenance psychological disturbance. Selective coding results, core category of this study was revealed to maintain psychological homeostasis. Environmental context during badminton competitions causes specific situations and events that evoke psychological disturbance. In turn, a player seeks mental and behavioral strategies to maintain psychological homeostasis. There is psychological homeostasis mechanism during badminton competitions for peak performance. Development of proper interest for psychological homeostasis will be improved through this research approach in sport psychology.
PURPOSE This study both validated the Characteristics of Resilience in Sports Teams Inventory (CREST) scale for use in Korean sports and analyzed the impact of team resilience on teamwork and performance. METHODS The study surveyed 462 elite football players by using the CREST scale to measure team resilience in Korean sports. Data were analyzed using descriptive statistics, exploratory factor analysis (EFA), reliability analysis, correlation analysis, multiple regression analysis, and confirmatory factor analysis (CFA). RESULTS First, results confirmed that the CREST scale’s two main factors—resilient characteristics and vulnerabilities under pressure—can be meaningfully applied in the Korean context. Second, resilient characteristics showed positive correlation with life skills, whereas vulnerabilities under pressure showed negative correlation. Third, resilient characteristics positively predicted life skills, whereas vulnerabilities under pressure negatively affected life skills. CONCLUSIONS The CREST scale was found reliable and valid in the Korean sports context, demonstrating that team resilience significantly impacts life skills. Thus, the study contributes to evaluation of resilience in Korean sports teams and provides strategicinsights to improve team performance.
Purpose The aim of this study is to find how the pyruvate intake and aerobic exercise effect on the body composition, exercise performance ability, blood factor and obesity related hormone, and to verify the effect of pyruvate intake and aerobic exercise as an effective substance for obesity improvement. Methods This study selected 20 obese men in their twenties who has more BMI than 25kg/m2, and are applicable in 25% of the body fat, and randomly sampled group of 10 people for pyruvate intake and aerobic exercise (PYA), and 10 people for placebo intake and aerobic exercise (PLA). Intake of pyruvate and placebo was implemented for 10 weeks, 6 g a day, and aerobic exercise, treadmill exercise in the intensity of 50 ~ 60%’s target heart rate, was conducted for 10 weeks, 3 times a week, 60 minutes a day. To demonstrate the effect of pyruvate intake and aerobic exercise, all of the body composition, exercise performance ability, Lactate, and blood factor and hormone related to obesity were measured before and after the test in the same manner. Results The main results from this study are as follow; 1) In the case of body composition, in PYA, weight(p < .01), BMI(p < .05), body fat percentage(p < .01), and body weight without fat(p < .001) are reduced meaningfully. 2) In the exercise performance ability increased significantly in both PYA(p < .01) and PLA(p < .001) for V˙O2max, Also, in the case of distance during the exercise, PYA(p < .01) and PLA(p < .05) increased significantly in 15 minutes and PYA(p < .01) and PLA(p < .05) 30 minutes, but only in PYA from 45 minutes(p < .01) to 60 minutes(p < .05) 3) In case of Lactate, the significant decrease in PYA during stabilization and the significant increase in PYA after 30 minutes of exercise was not seen after 45 minutes 4) In the case of blood factor, HDL-C showed a meaningful decrease in PLA(p < .05) and Leptin showed a meaningful decrease in PYA(p < .001). Conclusions To sum up these results, it was more effective for the group of PYA which ingested pyruvate in improving obesity, even when the same aerobic exercise is conducted.
