2020, Vol.5, No.1

Relationships between the Digit Ratio(2D:4D) and Exercise-Related Physical Fitness Components in Males and Females

Cho Chang-mo | 2020, 5(1) | pp.1~10 | number of Cited : 3

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The relative length of the second and fourth fingers(2D:4D ratio) is a putative biomarker for prenatal testosterone. Low 2D:4D has been known to correlate with morphological, physiological, psychological, and high levels of athletic performance and physical fitness. In this study, it was examined the relationship between the 2D:4D ratio and two important exercise-related fitness components(speed and power) in nonathlete young adults. A total of 108 healthy recreationally active university students(73 male and 35 female, aged 18-20 years) were participated in this study. Body weight and height were measured, and body mass index(BMI) was calculated. The lengths of the second and fourth fingers of the right and left hands were measured, and the 2D:4D ratios were calculated. The difference of the digit ratio between the right and left hands(Dr-l) was also calculated. Speed and power performance were assessed by measuring 100-meter sprint record and handball throwing distance, respectively. Independent t-test was performed to analyze differences between males and females about all variables of physical(height, weight, BMI) and anthropometric(lengths of 2D, 4D, and 2D:4D ratio of both hands, and Dr-l) characteristics. The association between physical and anthropometric characteristics and the speed and power-related performance in each sex(male: speed, power, female: speed only) was determined by the Pearson correlation coefficient. Statistical significance was set at P < 0.05. As the main findings of this study, the lengths of the 2D and 4D of males were significantly longer than those of females(P < .001), while male digit ratios in both hands were significantly lower than females(P < .01). There was no significant sex difference in Dr-l. In males, significant positive correlations were observed between the handball throwing distances and the body weight(P < .05) and BMI(P < .01). In females, there was a significant negative correlation between the length of the fourth digit and 100-meter sprint record(P < .05). However, the 2D:4D ratio was not correlated with the speed and power performance in males and females. These results suggest that the 2D:4D ratio is not a major parameter in predicting exercise potential in the nonathlete young adult, and more research is needed that focuses on other factors that can affect exercise potential in the population that is similarly affected by prenatal sex hormones.

Analysis of the Relation between Female SOFTBALL PLAYERS Field Test and Anaerobic Exercise Ability and Isokinetic Muscle Function

Cheon Woo-kwang , Lee Sun-janng , Park Ju-sik | 2020, 5(1) | pp.11~20 | number of Cited : 6

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Relationship Between Body Composition, Physical Fitness, and Blood Variables in ELEMENTARY SCHOOL GIRLS

Park Ju-sik , Kim Jae-hoon , Kim Ki-jin | 2020, 5(1) | pp.21~32 | number of Cited : 3

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The purpose of this study was to investigate the effect of exercise program application and the relationship between physical fitness factors and blood variables according to various obesity evaluation criteria for 73 elementary school girls in D-city. As a result of study, body fat percentage and BMI significantly(p<0.05) decreased after exercise program application. In the case of physical fitness factors, it was found that the right, left, and upper body strength, long jump, and physical efficiency index were significantly(p<0.05) increased. In the case of blood variables, insulin, GOT, and GPT significantly(p<0.05) increased, and glucose and HDL-cholesterol significantly(p<0.05) decreased. As a result of the correlation analysis between body composition-related indicators and physical fitness factors, body fat percentage, BMI, WC, WHR, and WHtR showed significant(p<0.05) correlation with back muscle strength, and BMI, WC, WHR, and WHtR had significant(p<0.05) correlations between right and left grip strength. The body fat percentage showed a significant(p<0.05) inverse correlation with sit-up, standing long jump, and physical efficiency index, and BMI showed a significant (p<0.05) correlation with sit and reach, and a significant(p<0.05) inverse correlation with standing long jump and physical efficiency index. WHtR showed significant(p<0.05) inverse correlation with in standing long jump. As a result of correlation analysis of body composition-related indicators and blood variables, body fat percentage, BMI, WC, WHR, and WHtR showed(p<0.05) significant correlation with blood insulin concentration and GPT. Body fat percentage and BMI showed a significant(p<0.05) correlation with triglycerides, and a significant(p<0.05) inverse correlation with GOT and HDL-cholesterol. WC showed a significant(p<0.05) correlation with triglycerides and a significant(p<0.05) inverse correlation with HDL-cholesterol. WHtR showed a significant(p<0.05) inverse correlation with HDL-cholesterol. When the results of this study were put together, the 12-week complex exercise program confirmed the positive improvement effect of physical composition and physical fitness factors of elementary school girls.

A Narrative Study on the Preparation Period for the Performance Improvement of the Winner of TAEKWONDO Demonstration Competitions

Kwack Hyun-tae , Shin Ho-chul | 2020, 5(1) | pp.33~47 | number of Cited : 15

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This study examines the empirical meaning of the winners of the breaking events at taekwondo demonstration competitions through these narratives, identifies the psychological characteristics of the winners through the psychological technology model of Vealey(1988), and captures the stories in the winning experiences. The purpose is to share ways to improve the performance and to provide the necessary information for the psychological training of the field leaders and athletes through the psychological characteristics of the elite athletes of the taekwondo demonstration competitions. Participants for the narrative research were selected through the purposed sampling, and four athletes who had won the championship in the last three years were selected and interviewed from the Taekwondo Hanmadang competition and university president's flag competitions organized by the Korea National Sport University and Yongin University. First, in the preparation for the competition, the basic techniques were repeated practice, strategic composition, basic physical strength, diet control, and protective mats. Basic techniques included self-efficacy, and psychological techniques included stress management, image training through relaxation, motor-sensory image training, inner mental training, and leadership, encouragement, conditioning, and communication. Second, in the stories of the competition venue, repeated practice appeared as a basic technique among psychological techniques. Self-efficacy and sports confidence were shown as basic skills, and during the practice process, mental image training, subjective goals, cognitive strategies, internal mental training, self-talk, and objective goals were shown as psychological techniques. Interpersonal orientation was a facilitation technique, and performance technique included adaptation to the environmental factors, strategic analysis, and focus.

Exploring the Nature of Genius Loci in SPORT Stadiums Based on Collective Memory in CHINA

Zhao Xuemei , Bai Xuefeng , Shin Hong-bum | 2020, 5(1) | pp.48~57 | number of Cited : 4

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The genius loci of sport stadium is the main element for the public to feel the sport atmosphere and experience its function as the city architecture, and it is also the foothold and significance of sport stadium. However, with the change of architectural concept, advanced technology and new building materials gradually become the architectural theme of sport stadium, and the nature of sports carried by it is gradually covered by these phenomena, leading to the weakening of the public's cognition of sport stadium. If this phenomenon exists for a long time, it will not only affect the function of sport stadium and its role in urban development, but also eliminate the nature of it. Therefore, to reconstruct and maintain the genius loci, this paper analyzes the genius loci of sport stadium in China with the main elements of the collective memory, explores the nature of genius loci, and provides suggestions for its spread and continuation in the future. This paper explores the construction of genius loci of Chinese sport stadium based on collective memory through literature review. It fosters to spread and consolidate genius loci of Chinese sport stadium through reconstruction of memory. According to the results from this study, there are three factors of collective memory. 1)Sport fans as the subjects of memory in the construction of collective memory. 2)Sport events and activities as the carrier in the construction of collective. 3)Stadium carrying Genius Loci as the object in the construction of collective memory. However, there are still some existing problems of genius loci of sport stadiums for the construction of collective memory. Lacking chance to enter into sport stadium hinders interaction between people and stadium. The formation of Genius Loci of stadium needs people deeply interact with stadium. The feeling of subject is the first step to identify Genius Loci of stadium. At present stage, the openness of the stadium is low, and the opportunity for people to feel sports and have emotional resonance is reduced, so it is difficult to interact with Genius Loci of stadium. In addition, low continuity of sport events and activities which causes sport stadium idling impedes the spread of Genius Loci of sport stadium. The number of stadiums has been increasing with the rapid development of sport industry in China but the number of sport event generated is relatively limited. Moreover, location trend from city to suburb blocks the spread of Genius Loci of sport stadium. Most stadiums in China are located in the suburbs of the cities. Although they can be satisfied with the harmony of the surrounding natural environment, the interaction between stadiums and people is severely restricted by the inconvenient traffic and other conditions. Based on the results from this study, there are several suggestions to keep collective memory of Genius Loci perceive from the stadiums by sport fans. 1)As the subject of the memory, the public's intuitive feeling and experience of sport stadium is the key to the spread genius loci. 2)Sport events are the main ways for the public to interact with Genius Loci. 3)The construction of sport stadium should focus on the integration of the surroundings and become an integral part of urban construction.

A Korean Poly-Herbal Medicine, SMO16, Regulates the RANKL/OPG Bone Remodeling in OVX Rat Model

Seo Il-bok , Ahn Sang-hyun | 2020, 5(1) | pp.58~64 | number of Cited : 3

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The Structural Relationship among Safety Climate, Motive to Participate, and Leisure Satisfaction Level of Marine SPORTS Participants

Kim Sung Hoon , Seong-Jin, Hong , Shin Hong-bum | 2020, 5(1) | pp.65~73 | number of Cited : 6

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The purpose of this study is to analyze the actual relationship between the linkage structure and the structural model of participation motive and leisure satisfaction in situations where the safety of marine sports is guaranteed. The total of 217 subjects was selected by convenience sampling technique among those who enjoy marine sports such as windsurfing, scuba diving, kayak, jet ski, and motor boat with the survey questionnaire developed for this study. The validity and reliability of the measurement tools used in this study were verified by a group of four experts. The validity of the tools was verified by confirmation factor analysis, and the reliability was verified with Cronbach's α coefficient. Analyzable data were processed according to the purpose of the study using SPSS 18.0 and AMOS 18.0. Internal consistency was verified through confirmatory factor analysis and reliability analysis, and structural equation modeling(SEM) was performed for correlation analysis and to examine the causal relations among the variables. The research model set up in this study was tested to be fit, and the hypotheses according to the research model were verified and the results were obtained as followed. (1)The marine sports safety climate utilized in this study was found to have a positive effect on motives to participate meaning that ensuring safety will further boost participation in marine leisure sports and bring about a lot of development. (2)Safety climate in marine sports has been shown to have a positive effect on leisure satisfaction. Providing a better safety climate for those who enjoy leisure activities is thought to be a natural way to enhance satisfaction. The water leisure facility, where safe climate is set, provides a foundation for participants to enjoy the activities with confidence and further promotes vitality. (3)Motive to participate was found to have a positive effect on leisure satisfaction. Leisure satisfaction has a significant effect depending on the degree of participation in marine sports. It could be concluded that individuals participating in marine sports programs chosen as a way of leisure gain great satisfaction through marine sports activities. However, facilities, equipment, program operators, leaders, and managers related to high-risk sports should prioritize ensuring safety through system-wide safety and thorough education and must recognize that educational actions that value the importance of safety are paramount. If safe and beneficial programs are continuously provided through this, the participation rate and satisfaction will improve, resulting in quantitative and qualitative development of the marine sports industry.

A Single Case Study on KINEMATIC Correction of the Idiopathic Scoliosis Using Sling and Schroth

Lee Min-ji , LEE, JAEBUM , Kim Hyun-woo | 2020, 5(1) | pp.74~83 | number of Cited : 0

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Effects of FUNCTIONAL CORRECTION on Foot Pressure Balance, Pelvic Displacement and Spinal Displacement in Patients with Low Back Pain

Yang Seo-jun , LEE, JAEBUM , Kim Hyun-woo | 2020, 5(1) | pp.84~93 | number of Cited : 2

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Kinesiology KCI Impact Factor : 0.0

2020, Vol.5, No.1