ISSN : 1598-2920
Purpose The valuable impacts of exercise-intervention in diverse type of cancer patients were rationally well-prescribed, though many experimental and review researches already performed in this fields. Generally, cancer-related fatigue and pain remains one of the most prevalent problems for cancer populations. Therefore, exercise has become increasingly significant in cancer prevention and progression. The purpose of this recent study was to analyze the combined exercise program on cancer-related fatigue, pain, quality of life and cancer prognosis in diverse type of cancer patients. This study analyses the safety and feasibility of exercise intervention in diverse stages of cancer patients such as early stage, advanced stage and even metastatic periods in cancer populations. we also wanted to know the impacts of dose-response trial of aerobic and resistance exercise on quality of life in cancer survivors. Methods we conducted a comprehensive PubMed/MEDILINE electronic database from Jan 2015 to August 2020. The reference lists of eligible experimental research articles and relevant systemic review articles were checked. Inclusion criteria were adult cancer survivors from randomized controlled trials performing well-tailored exercise intervention programs to diverse type of cancer patients, Using predefined search items ‘exercise-intervention, cancer & immunology’. Based on reference search, more than 100 articles were identified whereas 30 research papers met the inclusion criteria and were well connected with exercise-intervention and cancer progression. we analyzed the connections between physical exercise and cancer intervention in the main text. Results Moderate to vigorous exercise (aerobic and resistance exercise) revealed to decreased level of cancer-related fatigue, pain, and cancer-related symptoms, however increased level of sleep quality, activities of daily living, exercise performance and health- related quality of life. Exercise intervention reduced pro-inflammatory markers and oxidative stress as well as insomnia, fatigue, pain symptoms whereas it enhanced the antioxidant systems and immune functions. In addition, home-based aerobic physical exercise might enhance muscular strength and quality of life in many types of cancer survivors. Psychological intervention also effective for reducing cancer-related fatigue and pain during and after cancer treatment. they might be the much better intervention than available pharmaceutical options. we believe that it is the related mechanisms of immune cell mobilization and activation such as NK cells which is induced by the activation of sympathetic system during and after physical exercise. Conclusion According to the aforementioned results, it was concluded that implementation of exercise intervention appear to be the best non-pharmaceutical interventions for cancer populations, and also revealed to be safe and feasible in early and advanced stages, although not in the metastatic periods. Sometimes, psychological intervention such as mindfulness-based stress reduction (MBSR) might be useful in reducing anxiety, depression, fatigue, pain and enhancing quality of life, quality of sleep for cancer populations. we can conclude, exercise-intervention might not just be prevention effect but might be therapeutics, however more studies are urgently needed to confirm the exercise intervention on the NK-receptors activation and immune connection of cancer populations.
Purpose The aim of this study was to investigate the effects of treadmill exercise on mitochondrial quality control in the APP/sw transgenic mice model of Alzheimer's disease(AD). Methods The experimental mice were divided into non-tg-control (NTC, n=10), tg-control (TC, n=10), and tg-exercise (TE, n=10), and treadmill exercise was conducted for 12 weeks (15m/min, 60min, 5 times/week). And then, we measured the cognitive function using MWM and the brain cortex was evaluated to determine whether any changes in the oligomer Aβ, apoptotic-related factors, mitophagy and mitochondrial biogenesis. Results As a result, treadmill exercise significantly reduced oligomer amyloid and also had a positive effect on proteins (PUMA, Bax, Bcl-2) associated with apoptosis. In addition, through the treadmill exercise, PINK-1 decreased, and increased parkin, showing that active inhibition of mitophagy has been partially relaxed. It has been confirmed that the key autophagy markers LC3 and p62 significantly reduce p62 expression in TE group compared to TC group, and that LC3-II/LC3-I ratio tended to decrease, although not significant, increasing the activity of mitophagy. Next, proteins related to mitochondrial biosynthesis (SIRT-1, PGC-1α, Tfam, and COX-IV) have been identified, and the treadmill exercise has confirmed that the expression of all proteins has increased in part. Finally, cognitive has been shown to improve cognitive by shortening both swimming distance and time through treadmill exercise. Conclusions Thus, our finding suggested treadmill exercise alleviates cognitive dysfunction by improving mitochondrial quality control(mitophagy, mitochondrial biogenesis) and neuronal cell death via reducing amyloid accumulation, which may play a role in a preventive strategy for AD.
Purpose This study aimed to investigate the effects of acute cold stress (10℃, 0℃) compared with ordinary temperature (20℃) on exercise performance and physiological response at rest and during exercise. Methods A total of 10 healthy men (21.55 ± 2.16) were selected. In each environmental condition (20℃, 10℃, 0℃), the three testing order was randomly selected at crossover, and there was a week interval between the graded exercise test (GXT). On the testing day, they remained resting for 30 min in each environmental condition. Dependent variables (body temperature, energy metabolism parameters, skeletal muscle oxygenation profiles, and exercise performance parameters) were measured at rest and during GXT. Results In body temperature, at each environmental condition, there was a significant decrease (p<.05) at 10℃ and 0℃ compared with 20℃ after exercise, and in the difference depending on the environment at rest. After exercise, the body temperature significantly decreased (p<.05) in proportion to the decrease in temperature. There was no difference in heart rate and blood lactate level in energy metabolism, and the respiratory exchange ratio was significantly higher (p<.05) at 0℃ than 20℃. Minute ventilation (VE), oxygen uptake (VO2), and carbon dioxide excretion (VCO2) were significantly lower (p<.05) at 0℃ than 20℃ and 10℃ at various exercise load. All skeletal muscle oxygenation profiles did not show significant changes at rest and during exercise. In exercise performance, maximal oxygen uptake was significantly lower (p<.05) at 0℃ than 20℃, and exercise time to exhaustion was also significantly lower (p<.05) at 0℃ than 20℃ and 10℃. Conclusion Acute cold stress induces deterioration of exercise performance via a decreased body temperature and an increase in VE, VO2, and VCO2 during the same exercise load. In addition it was confirmed that this phenomenon was more prominent at 0°C than at 10°C when compared to 20°C.
Purpose This is the first study to examine whether age impacts the response of single muscle fibers to high/low frequency and high/low volume electrical pulse stimulation. We performed in vitro experiments to evaluate the effect of low-frequency high-volume electrical pulse stimulation (EPS) on mechanistic target of rapamycin (mTOR), mitogen-activated protein kinase (MAPK) signaling pathway, and satellite cell activation in singles fibers of young and aged muscles. Methods Isolated single fibers from gastocnemius in 12-wk (n=21) and 72-wk (n=21) old male C57BL/6 mice were divided into four groups: 1) control (Con) received no EPS, 2) low-frequency low-volume EPS (LL), 3) low-frequency high-volume EPS (LH), and 4) high-frequency low-volume EPS (HL) were made to contract using independent EPS protocols. Satellite cell activation and anabolic pathway (mTOR and MAPK signaling) were measured before and after EPS. Results The number of quiescent (Pax7+/Ki67-) and active (Pax7+/Ki67+) satellite cells, myonuclear content and the phosphorylation of 4E-BP1 and ERK were higher in young when compared with old. However, regardless of age, LH and HL EPS significantly increased the number of activate satellite cells (142%, both) and phosphorylation of mTOR (129% and 133%, respectively), p70S6K (133% and 136%, respectively) and 4E-BP1 (140% and 129%, respectively) compared with Con. The protein expression of ERK phosphorylation only increased by LH EPS in both the young and old groups (123% and 125%, respectively). Conclusion Low-frequency high-volume EPS stimulated satellite cell activation and the mTOR signaling pathway in older similar to young muscle.
Purpose Soccer-related social media BigData includes complex information related to soccer players and is continuously and instantly generated. Text mining research is actively carried out for this kind of social media contents analysis, but it tends to be analyzed with limited linguistic characteristics such as understanding of language complexity and context, ambiguous terms, rhetoric, and new terms. This can be attributed to the fact that the tools commonly used for text mining use universal terminology dictionaries and packages that exclude the peculiarities of the analysis themes. The purpose of this study is to develop an Ontology model, which are representative tools for defining semantic ambiguity and relationships and systems between terms of text data. Methods In order to achieve the research objectives, we applied the 7-step development method of ‘Ontology Development 101: A Guide to Creating Your First Ontology’, which is useful for ontology development. Each step includes 1) Determine the domain and scope of the ontology 2) Consider reusing existing ontology 3) Enumerate important terms in the ontology 4) Define the classes and the class hierarchy 5) Define the properties of classes-slots 6) Define the facts of the slots 7) Create instances. In particular, the 3rd-step of this study, the glossary stage, is to extract core terms that make up he ontology, but since the goal of this study is to develop the ontology that can be used in social media contents analysis of soccer players, we conducted a social media text analysis related to actual soccer players and selected 484 core terms. Results The ontology which was developed in this research for social media contents analysis of soccer players consisted largely of four parts(General terms, performance results terms, common terms, and Characteristic term) and classified according to the content characteristics of the term. Conclusion Developed ontology in this study is object-oriented that defining classes and objects to define divisions and relationships between terms and also means a social media contents knowledge system of soccer players. In addition, it performs a function as a secondary tool which can be utilized for atypical data analysis.
Purpose The purpose of this study was to determine item goodness-of-fit and the optimal categorization of an instrument measuring Korean elite young soccer player’s self-esteem using a two-facets Rasch model (item parameters and person parameters). Methods 10-item Rosenberg Self-Esteem Scale (RSES) with five response categories was administered to 366 elite young soccer players from the Korea football association. The Rasch analysis was conducted by WINSTEPS 3.65. Results First, the model fit the data well. Second, 5-category rating scale did function well. Third, a item-person map illustrated the distribution of RSES items and person’s level of self-esteem. Fourth, the separation reliability of the items and person was shown to be an acceptable degree of confidence, respectively. Lastly, there was statistically significant difference in self-esteem between starting players and bench players, which supported the known-difference evidence of validity. Conclusion These findings provided additional support for the suitability of the RSES in assessing self-esteem of Korean elite young soccer players.
Purpose This study was to analyze and compare series of muscle activities during plank exercises with use of togu-jumper. Methods Ten male subjects (age 26.9±1.7 yrs, height 172.2±5.7 cm, weight 66.5±7.5 kg) who have no musculoskeletal disorder with one's upper or lower limb were selected as subjects. To analyze and compare series of muscle activity, five of surface EMG electrodes were attached to the upper rectus abdominis (URA), lower rectus abdominis (LRA), external abdominal oblique (EO), erector spinae (ES) and gluteus maximus (GM). Each subject did plank exercise on stable support surfaces (normal surfaces) and unstable support surfaces with the togu-jumper. For each dependent variable, one-way ANOVA with repeated measures were performed with significance level p<.05. Contrasts were performed to execute post tests for results with statistical significance. Results The study showed that the average IEMG values of URA and LRA increased in Upper (Togu-jumper used upper limb) compared to normal surfaces. This is perhaps because the effects of URA more than any other muscles for body stability. Furthermore, the peak IEMG values of LRA increased in Upper and Lower (Togu-jumper used lower limb) compared to normal surfaces. In addition, peak IEMG values of EO increased in Upper compared to Normal. This may have resulted due to momentary strong muscle activity in LRA and EO to correct body posture and balance. Therefore, using Togu-jumper on upper limb maximizes the performance of core training in plank exercise. Conclusions The study may be further applied to a method for effective training. It is considered that research and analysis has to be further done on modified plank exercise. Additionally, it is necessary to analyze not only global muscle but also local muscle, as a comprehensive research, to suggest ideal method for plank exercise.
Purpose This study measured the haptic extroperception accuracy, that is, judging one hit position in a hand-held object. Especially, what factors associated the estimation of contact position when the impact is made at the grasped implement by hitting the ball. Methods Relative frequency and conditional probability based analysis verified that perceivers influenced not only the amount of pressure distinguished impressions by the coefficient of restitution but also the pressure distributions encoded impressions by the distance from the hand to the impact. Results Results conformed to previous invariant characteristic on dynamic touch in showing that perceiving the location of the impact of grasped objects, including dominant perceiving selectively modality, is constrained by inertial properties with such success requires appreciating the location of the implement’s center of percussion. Conclusion Investigated in this planes captured as a mechanical factor, we would suggest a broader hypothesis for further research into the effects of the rotational inertia related to haptic position accuracy in the hand-held object, and leading to different estimates of system function providing an account of generalization that accommodates of its varied aspects.
Purpose The purpose of this study was to find out the relationship between emotion and control focus and training involvement in games where elite shooters are late. Methods Thus, 228 elite shooters were selected and the research results were derived based on data analysis using discriminatory emotions, control focus, and training attendance scales. Results According to the analysis of the correlation between emotion, control focus, and training involvement, positive emotions of surprise, enjoyment, and interest showed a static relationship with improvement focus and training involvement, while negative emotions such as anger and guilt had a static relationship with prevention focus, but showed an inadequate relationship with training involvement. The multiple regression analysis between emotion and control focus showed that the improvement focus showed the most significant effect of enjoyment emotion, while the prevention focus showed that instability had the most effect on the prevention focus. Overall, the focus of improvement has been shown to be affected by training. Finally, it was found that positive sentiment had a positive effect on improvement focus and training involvement, while negative sentiment affected prevention focus and reduced cognitive involvement. Conclusions Positive sentiment toward the competition has been confirmed to enhance training participation by strengthening the focus of improvement, but negative sentiment has been shown to enhance the focus of prevention, reducing cognitive involvement.
Purpose Limited research has investigated the marketing mix of international sporting events empirically. This study filled this gap by identifying the marketing mix and examined the structural relationships among marketing mix, destination image, satisfaction and revisit intention focusing on foreign spectators of 2019 Gwangju FINA World Championships. Methods The questionnaire was structured in four sections: sporting event marketing mix (seven dimensions and 21 items), host city image (three items), satisfaction (three items) and revisit intention (three items). Analysis of data from 396 foreign spectators in FINA Championships indicated that the proposed model fit the data well. Within a attitude-behavior theoretical framework, this study proposed and tested a structural relationships among the constructs. Results The results of this study presented that (1) product, place, and people in sporting event marketing mix significantly impacted foreign spectators’ destination image, (2) product, price, place, promotion, and physical evidence were appeared to be significant predictors of satisfaction, and (3) destination image and satisfaction had a significant effect on foreign spectators’ revisit intention. Conclusion The findings suggest marketing mix for the international sporting event and its influential mechanism on foreign spectators’ revisit intention. Practically, this study provides important implications for event organizers that can be utilized to develop strategic marketing mix in sporting events to enhance spectators’ destination image, satisfaction, and revisit intention.
Purpose This study is to investigate the human rights violations of Semi-professional team athletes. Methods The subjects of the survey were 4,069 people in total of 56 sports athletes from teams. than, 1,251 athletes who agreed to provide personal information (635 males and 616 females) were sampled. The survey tool consisted of a total of 76 questions asking about violence, sexual violence, and general characteristics of semi-professional athletes. Results were frequency analysis, cross-analysis, and multiple response analysis. Results Despite being an adult athlete in the semi-professional Team's Workplace Sports Team, life controls were severe in the sports team and human rights violations, such as verbal and physical violence, were widely observed, and sexual harassment and sexual violence were not small. The main perpetrators were the leaders and senior players, and the venue was the training ground. The players were in an environment where they were forced to respond passively for fear of hierarchical, collective atmosphere and personal disadvantages, and were blind spots for labor rights in terms of contracts and treatment. Conclusion To human rights violations of semi-professional athletes as the structural problems of the Korean sports. It is necessary to strengthen human rights education by the workplace movement department and conduct regular human rights surveys, and legal institutionalization to establish a disciplinary information system for perpetrators. In addition, by enacting guidelines for human rights in the sports world, a system should be prepared so that the victims can actively express their intentions.
Purpose The purpose of this study was to empirically analyze the relationship between a sports-for-all club members self-esteem and self-determination, conspicuous consumption, ethical consumption, product identification, positive word of mouth & repurchase intention through structural equation model analysis. Methods For this purpose, this study set 279 members at the nine sports-for-all club located in national capital region as the research subjects. In an effort to verify the proposed structural model, this study used SPSSWIN Ver. 23.0 and AMOS 18.0. Results First, self-esteem had a positive effect on conspicuous consumption. Second, self-determination had a positive effect on ethical consumption. Third, conspicuous consumption had a positive effect on product identification. Fourth, ethical consumption had a positive effect on product identification. Fifth, product identification had a positive effect on positive word of mouth. Sixth, product identification didn’t had a positive effect on repurchase intention. Seventh, positive word of mouth had a positive effect on repurchase intention.
Purpose The purpose of this study was to explore the concept of physical education redesign. Methods Studies on curriculum redesign, physical education curriculum redesign and the revised 2015 physical education curriculum were collected and analysed. Results First, three different types of curriculum redesign were discussed. Second, there was no clear concept of physical education redesign. Third, both ‘learning content area’ and ‘standard achievement’ were related to the physical education curriculum redesign. Conclusions Two different aspects of physical education curriculum redesign emerged. Establishing the clear concept of physical education curriculum redesign and presenting the concept in the next national physical education curriculum were suggested.
Purpose This study tells about my life about the past time when I studied for the teacher certification examination, using autoethnography. Methods It primarily used personal memories and diaries. The collected data was analyzed by applying longitudinal coding method through technical categories. Results The finding of this study is described in a chronological order as follows. The first part is about my unstable ego formed in my puberty period just like riding a roller coaster. It mainly features the process of choosing a career path when I was in school and the important starting point that made me today. The second part describes about my life after entering the department of physical education. I joined the military only to flee from a fruitless college life where I was wearing an unbefitting mask to hide myself from the world that is completely beyond my control. In the military, I was lucky to realize how to apply my major to set up my career path by coincidence. The third part is about the process of finding a genuine meaning of being a physical education teacher through a transitional period experienced after returning to school and form a stable self. Lastly, passing teacher certification examination with undaunted struggles boosted my self-esteem and self-efficacy and solidified my self-identity in the end. In addition, it is possible to get a glimpse of the attitudes that teachers need to have for a teaching career in the last part. Conclusions What I want to say throughout my descriptive story is that preparing for the teacher certification examination itself is a great challenge as well as a courageous decision for the candidates, but it is an attainable goal if they try with all their heart.
Purpose The purpose of the study is to analyze China's school sports policy by dividing it into the era of four leaders before the current regime. Methods Former Chinese leader Deng Xiaoping's reform and opening up is a big axis that distinguishes China's time, more than 70 years after its founding. Therefore, we discussed the history of Chinese school sports policy by considering the background of the times, the ideology of the former Chinese leaders, and the keynote of the sports policy that influenced the school sports policy. Results The Chinese school sports policy history before and after China's reform and opening up is summarized as having a continuity to “sports as an education for all” and a distinction symbolized by “legislation and scientificization.” Conclusion Deng Xiaoping's reform and opening up has been carried on by the regimes since then, and his guiding ideology and sports policy keynote have had a profound impact on Chinese school sports policy.
Purpose This study is to examine the historical facts about the integration of the Korean Sports Association, the Korean Olympic Committee, and the Korean School Sports Association in 1968. Methods Primary and secondary data were used to understand the integration process of the three organizations. Result First, immediately after liberation, the Korean Sports Association was reorganized and a number of new sports organizations were founded. Second, in the 1960s, the military regime exerted the government's control, making all social groups essential to register in accordance with the Act on Social Group Registration. Third, the Korea Olympic Committee and the Korean School Sports Association frequently caused friction as they operated overlapping projects with the existing Korean Sports Association. Fourth, in February 1968, the government consolidated three groups that were considered social issues based on the experience of dissolving the Korean Special Sports Association. Fifth, the integration of the three organizations is significant in that it prevented redundant projects and wasted budget, and resolved the discord in the sports world. Conclusion The first integration of the Korean Sports Association in 1968 was a historical event that absorbed the Korean Olympic Committee and the Korean School Sports Association. The integration of the three organizations is viewed as a solution for the systematic operation of the sports administration, but on the one hand, it has become the top-ranking organization in the Korean sports community since this time by well blocking the checks of the Korean Olympic Committee and Korean School Sports Association. It can be understood as maintaining absolute power.
Purpose The purpose of this studied to improve athletes’ performance through sports psychological skills training and counseling of a male canoe player in high school. Methods One male high school athlete in J area was interviewed for sports psychological skills training and counseling, and interviewed athletes and coaches diagnosed the potential psychological problems of athletes. Through this process, the athlete gained the ability to control anxiety about the game and strengthened the attention-focused ability to increase his confidence and set a goal for improving concentration. For effective training, sports psychological counselors, athletes, and coaches met once a week to create a routine. and participated in direct training on a boat with the coach every week. Sports psychological skills, anxiety about competition, and self-management of athletes were measured before and after to confirm the effectiveness of training of athletes' psychological skills. Results As a result, athletes' psychological skills and anxiety decreased, their confidence increased, and their concentration, which was diagnosed as an urgent problem of athletes, improved. Conclusions psychological skills of athletes, psychological shortcomings of players were reinforced, thus enhancing the athletes' performance. This suggests the effectiveness and necessity of training in sports psychological skills. It is hoped that continued support will serve as an opportunity to diagnose potential psychological problems of student athletes and apply them to training to contribute to improving their performance.
Purpose The purpose of this study is to identify the consistency and correlation of referee evaluation according to the judging characteristics in the preliminary and semi-final of the Latin event of dance sports, thereby deriving the problem of referee reliability and suggesting alternatives for improvement. Methods The method of study is Based on the performance data of 54 amateur Latin dances match organized by the Korea Dance Sports Federation for a total of three years 11,850(preliminary rounds & semi-final). Based on the Kappa statistics and the degree of agreement(pa), the difference in the group of examination characteristics was derived and the correlation between the five Latin events was analyzed. Results As a result of through this study, the consistency of the dance sports referee and the characteristics of the judging in the event were confirmed, and the number of judges tended to be higher when the number of judges was seven, the more the number of subjects was, and the highest level of agreement was more than 70 percent of the judges. In addition, the higher the concordance of each of the five detailed items, the higher the correlation tendency. Conclusion Differences in visual aspects between dance sports judges and the difference in the judges' ratings due to the revision of the rules, the decrease in the number of competitors participating in the competition, the number of people to be eliminated in each round, and the proportion of judges with experience in the competition are different, and these differences affect the judges and show up in the scores. The Latin dance sports events based on objectivity and reliability to improve the correct standards of judges to find the same raters, work will be required and an assessment element. With a systematic way in and to carry out the review curriculum and educational development is considered necessary.
Purpose The aim of this study was to provide athletes and coaches on informations and benefits of a taper through evidence-based scientific studies and literatures in order to optimize an athlete’s top performance for the major competition. Methods Studies and literatures search was conducted using the databases RISS, KISS, SPORTDiscuss. Key words searched: taper AND(competition, OR performance, OR training, OR training). This study were eventually cited by 22 articles for results of this in total 100 articles. Results The training load is remarkably reduced during a taper. With a reduced training load, training intensity should be maintained during the taper. The training load reductions during the taper should be programmed with reducing training volume at 41% to 60% of pretaper training. The reduction of training frequency during a taper means that affect moderately trained athletes and highly trained subjects differently, reducing 30% to 50% of pretaper training and maintaining training frequencies, respectively. Detraining the duration of a taper is not easy. Most athletes is beneficial from a 2-week shorter or longer tapers, depending on their individual profiles of fitness loss, fatigue dissipation, and anxiety. The manipulations of this training program variables usually affect for most athletes and maximal performance gains. Conclusion Training intensity should be maintained during the taper, training volume reductions should be programmed at 41% to 60% of pretaper training. The reduction of training frequency could be reduced 30% to 50% of pretaper training, and most athletes is beneficial from a 2-week shorter or longer tapers. Future researches should be conducted the practical & effectual differences in individual and teamed-based sports after a taper procedure.
