ISSN : 1598-2920
Purpose This study was designed to examine the effects of a single corrective exercise (CEX) and corrective kinesio taping (CKT) on gait patterns, plantar pressure, balance, and pain in 20~30s female patients with moderate hallux valgus. Methods Twenty-one participants (age: 30.1±5.1 yrs; height: 164.1±4.8 cm; body weight: 56.7±6.8 kg; body mass index: 21.2±5.7 kg·m-2; hallux valgus angle: 27.2±6.1°) with hallux valgus was recruited and participated in three trials, i.e., CEX trial, CKT trial, and combined CEX and CKT (CEX+CKT) trial, repeatedly in a counter-balanced order. One week of wash-out period was placed between the trials to minimize the effect of the previous treatment on the next treatment. Variables related to gait pattern, plantar pressure, balance, and pain were measured during each treatment. We carried out repeated two way ANOVA on measured variables. Results 1) Regarding gait patterns, CEX treatment and CEX+CKT treatments showed significant increases in the length of patients strides, the single support line during the stance phase, and significant reduction of the cadence. 2) Regarding gait cycle, CEX treatment and CEX+CKT treatments showed significant reductions in the contact times of forefoot, midfoot, and heel. There was a significant reduction of double stance phase in CEX treatment. 3) Regarding foot pressure on gait, CEX+CKT treatments significantly increased the maximum pressure of midfoot and heel. CEX treatments significantly increased the maximum pressure of forefoot. 4) Regarding balance, CEX treatment and CKT treatments significantly increased one leg standing with eyes closed. 5) Pain was significantly reduced in CKT treatment and CEX+CKT treatments. Conclusions According to the aforementioned results, it was concluded that a single CKT treatment was effective in reducing pain when walking and that plantar pressure, gait pattern, gait cycle, and balance were improved through a single bout of CEX treatments. Therefore, treatments by stage, starting with CKT treatments to reduce the pain, and then treating CEX to improve the gait pattern, gait cycle, foot pressure when walking, and balance ability, would be effective. Future research is warranted to identify the effects of long-term treatments.
Purpose The purpose of this study was to evaluate the moderate to vigorous physical activity(MVPA) and sedentary time measured by accelerometer. Furthermore, the level of physical activity and adherence rate of physical activity guideline(PAG) were compared with the self-reported questionnaire. Methods The MVPA, sedentary time, and adherence rate of PAG according to age and sex were examined to people who agreed to wear accelerometers among the participants of the 2014-2015 Korea National Health and Nutrition Examination Survey. To compare the relationship between accelerometer and self-reported questionnaire, Chi-squared test and Spearman correlation analysis were performed. Results The MVPA of the accelerometer-total(AT) was 40.6 minutes/day for men and 31.1 minutes/day for women. Sedentary time was 502.9 minutes/day for men and 498.9 minutes/day for women. The MVPA of accelerometer-bout(AB) estimates was 16.4 minutes/day for men and 14.2 minutes for women. On the other hand, the MVPA of the self-report was 95.8 minutes for men and 64.3 minutes for women, and the sedentary time was 471.2 minutes for men and 455.2 minutes for women. The adherence rate of PAG was 55.6% of the self-report, 56.1% of the AT, and 21.4% of the AB. The correlation between self-report and accelerometer was statistically significant(p < 0.01), but showed a weak correlation coefficient(rho=0.112-0.351). There was no association between AB and self-report(p < 0.01). The sensitivity and specificity of the self-report were 71.3% and 48.6%, respectively. The positive and negative predictive values of the self-report were 27.5% and 86.1%, respectively. Conclusions As a result of this study, self-reported physical activity level by questionnaire had more MVPA and less sedentary time than the accelerometer-determined physical activity. In addition, the adherence rate of the PAG differed from accelerometer and self-report. The difference was significantly increased when comparing AB with the self-report. Therefore, great care must be taken when interpreting accelerometer and self-report questionnaire. Further research will be needed on specific methods that can be used by complementing the two measurement tools.
Purpose The purpose of this study was to develop algorithms and software that can track the trajectory of table tennis balls using image-processing algorithms to obtain information quickly for under and establish tactics used in table tennis. Methods The algorithms used in the field of computer vision were applied on two matches played by novice and two matches during international competitions by elite athletes. Reliability analysis was performed by comparing the table tennis ball bounce frequency in each zone obtained through the automatic method and the manual method. Results The mean reliability of the two novice games was only 85.1 ± 3.69%, total error was 14.9 ± 3.69%, overestimation error was 52.2 ± 9.78%, and underestimation error was 47.8 ± 9.78%. While the mean reliability of the two international tournaments was 71.8 ± 0.87%, the total error was 28.2 ± 0.87%, overestimation error was 82.0 ± 8.03%, and underestimation error was 19.2 ± 7.75%. Conclusions Although the target reliability of algorithms and software developed in this study was achieved only in novice competitions with 80%, the over-estimation errors were generally high in international competitions, showing the potential for further improvement.
Purpose The current study investigated the effects of exercise information using social network service(SNS) to identify changes of physical activity and psychological variables among inactive college students. Methods Inactive college students(30 experimental group, 30 control group) were voluntarily participated in the 12-weeks intervention. During this period, the experimental group received exercise information through SNS. And all study participants’ physical activity, stages of physical activity, self-efficacy, motivation, and perceived benefits and barriers were measured at the pre, mid and post intervention. Frequency analysis, chi-square test, 2-way ANOVA RM were conducted to analyze data obtained in the study. All procedures were performed by using SPSS 23.0. Results The exercise information intervention using SNS during 12 weeks had a positive effect on the stages of physical activity of inactive college students, and there were statistically significant differences. In addition, physical activity, perceived benefits and barriers, self-efficacy, motivation positively improved after the intervention, but there were no statistically significant differences between experimental and control group. Conclusions The present study suggests that psychological strategies using various SNS programs have positive effects for inactive college students to increase physical activity and its related psychological variables.
Purpose The purpose of this study was to conduct a typological classification of female college students in sport studies regarding perceived career barriers. Methods Q-methodology was used to identify female college students’ viewpoints on carrier barriers. The Q sample was distilled from 76 statements (64 from literature reviews and 12 in-depth interviews) to 25 statement after conducting literature review, in-depth interviews and surveys with open-ended questions. The P sample for this study was 30 students around Seoul and PQmethod software was used for data analysis. Results Three distinct views were extracted: First type of ‘career opaque’, revealed that students have failed to find their own aptitude and interest. Second type of ‘sexual discrimination-male centered’, implied students’ concerns about discriminating factors in relation to marriage and pregnancy for the job they desire. Third type of ‘Insufficient experience and qualification’, indicates students perceive their lack of experience or qualification required for their career. Conclusions The identification of these three viewpoints could provide insights that can be used to design more segmented and detailed career policies for female college students in sport studies.
Purpose This study was aimed at laying out criticism regarding statistical hypothesis testing and presenting realistic alternatives focused on published studies of sports management in Korea. Methods Among 202 studies compiled by the Korean Society for Sport Management, vol. 19, no. 1 through vol. 23, no. 6, 115 studies which used the null hypothesis significant testing were finally selected. After data coding for selected studies, p-curve, the distribution of p-values which reported in individual studies, was schematized, and than adequacy about the sampling method and result descriptions were analyzed. Results The ratio of p-values close to zero was relatively very high in p-curve although there was no clear evidence of p-hacking. Also, approximately 82% of the studies used convenience sampling method, and incorrect descriptions in part of result and discussion due to lack of understanding of statistical hypothesis testing was found in some studies. In conclusion, the shortcomings of statistical hypothesis testing which commonly used in academic field were depended on not a defect in the method itself but researchers who misused statistical hypothesis testing. Conclusions Researchers in sport management field need to understand the advantages and disadvantages of statistical hypothesis testing and consider to use both confidence interval and effect sizes to compensate the disadvantages of p-value.
Purpose The purpose of this study was to empirically analyze the relationship between a commercial sports centers employees’ empathy, job satisfaction, customer orientation, service quality & organization loyalty through structural equation model analysis. Methods For this purpose, this study set 205 employees’ at the eleven commercial sports centers located in Seoul as the research subjects. In an effort to verify the proposed structural model, this study used IBM SPSSWIN Ver. 21.0 and AMOS 18.0. Results First, cognitive empathy had a positive effect on job satisfaction. Second, emotional empathy had a positive effect on job satisfaction. Third, communication empathy had a positive effect on job satisfaction. Fourth, job satisfaction had a positive effect on customer orientation. Fifth, job satisfaction had a positive effect on service quality. Sixth, job satisfaction had a positive effect on organization loyalty. Seventh, customer orientation didn’t had a positive effect on organization loyalty. eighth, service quality had a positive effect on organization loyalty.
Purpose The purpose of this study was to find out whether they can contribute to the revitalization of urban communities. Methods This study conducted in-depth interviews and focus group interviews to collect qualitative data. The collected data were analyzed through the domain analysis and the classification analysis. Results The roles of sports club managers in leadership and network intermediaries were very important in the accumulation of social capital. The formation of staff members who work for the managing and activating sports clubs has created trust and satisfaction with the sport. Their activities contributed to the formation of social capital in sports clubs and played an important role in revitalizing sports clubs. Conclusions Sports club managers performed important roles in building trust and network with the club members and even other clubs through their leadership. These management activities are possibly contributed to the creation and accumulation as social capital. Therefore this research also showed the possibilities of extension to local community of the social capital through sports clubs.
Purpose The purpose of this study is to explore the physical activity promotion plans for female student by revising and supplementing the SPARK program which is actively applied as a P.E physical activity improvement program recently. Methods To achieve this, this study followed the custom of action research and apprehended problem in female students' physical activity in SPARK soccer program(first action and examination), problem solving plan(replanning), execution and evaluation of replanned SPARK soccer program (second action and evaluation). The collection and analysis of data was conducted by sequential explanation strategy. Specifically, the study utilized 3 dimensional accelerometer to measure the physical activity in P.E class, and collected data which could apprehend the experience of students by utilizing qualitative study tools(observation, class note, interview). To analyze the collected data, the study utilized mixed-methods study analysis method developed by Greene(2007). Results The study results are as follows. As for the result of first action(October~November 2014), SPARK program increases the entire physical activity in P.E class, but the female students' activity was relatively lower than male students'. The reasons for lower physical activity of female students' were unmotivated class, burdensome class, alienated class. These were specified into teaching strategy to replan and execute the second action (May~June 2015). Compared to first action, the second action showed positive physical activity, and the MVPA of female students' showed statistical difference (<.01). As for the result of qualitative analysis, the positive grounds of second action are 1) motivative resource like "necessity", 2)hard but meaningful learning activity, and 3)kind P.E teacher. Conclusions In conclusion, the implementation of a soccer class with a modified supplement to the SPARK program can enhance physical activity of female middle school students.
Purpose The purpose of this study was to explore environmental constraints that hindered the physical activity of female students in daily life, and then to provide alternatives to improve the problems based on the social ecological model. Methods Research participants were twelve female students to be selected in two schools(Norang, Parang middle school), the process of data collection(orientation, photovoice implementation, focus group interview) and analysis(choosing a photo, contextualizing, subjecting) were conducted according to the Photo-voice. Results The constraints of physical activity in daily life were categorized on ‘playground as like a desert’(leisure domain), ‘space of recess and in-active play’(family domain), ‘transportation replaced by mom and dad car’(transportation domain), ‘space of the only exercise as well as reproduction of gender discrimination’(school domain). Conclusions The environmental constraints were analyzed as academic, physical, daily living, socio-cultural environment. Lastly, alternatives for promoting physical activity of female student were proposed in the level of organization, community, public policy based on the social ecological model.
In the field of Adapted Physical Activity, there is a dearth of research that has attempted to critically explore ethical issues arising in the field of practice. The reason why ethical considerations are needed in the field of practice is that adapted physical activity instructors can negatively affect other people's lives, such as students with disability, regardless of their intentions. Purpose Therefore, the purpose of this study is to apply ethical theories on ethical issues that may appear in the adapted physical activity practice field and consider their implications. Methods Through ethics theory, researcher attempted to critically examine what is right, wrong, or good or bad in the field of adapted physical activity practice. Results As a result of the research, ethical theories were considered and the contributions and limitations that each theory could offer to adapted physical activity practice were discussed.
Purpose Highly popular these days, eSport is inviting increasing scholarly attention and research. Scholarly work on eSport, however, remains focused on whether eSport is a “real” sport, that is, its sporting qualities and status, excluding ethical issues. This paper analyzes ethical issues about cognitive enhancement drugs often associated with eSport in order to suggest guidelines for resolving these issues. Methods First, environmental features of eSport are examined to find out types of cheating in eSport, as well as the ways eSport athletes are exposed to drugs. Next, ethical issues of cognitive enhancement drug use and why they are important are discussed, drawing upon multiple scholars. Last, this paper argues that the ban on drug use conventionally implemented in sport is not appropriate to eSport due to the characteristics of eSport. The paper concludes with possible future approaches to this issue. Results The ban lists administered by ESIC and WADA would not work for the need of eSport athletes and even run a risk of stunting the growth of eSport industries. It is thus important to think up an appropriate drug-related policy for eSport. Preemptive education for eSport athletes is also required to promote the ethical consciousness and judgment regarding drug use. Conclusions Insofar as eSport’s huge popularity leads to the increased status of eSport athletes, thereby exerting much influence on young people, ethical questions about eSport, drug use in particular, need to be urgently discussed for the sake of eSport’s wholesome development.
Purpose This study examines the Physical Education curriculum history of special schools, and then in-depth grasps the process of how the sports environment for the disabled has changed by age. Method The research method was literature review analyzing papers, reports and newspapers. For the concrete process, this study verified the relationship between the research subject and the collected data through experts and historians with disabilities to verify the sports data for the disabled. Results First, the process of physical education management of special schools is as follows. in the 1940's and 50's special schools, physical education was carried out simply by gymnastics. but, special schools were differentiated by the characteristics of the disabled, and the institutional foundation for physical education was also imitated by the 1960s, 1970s and 1980s, special schools were shortened in physical education time due to the increase in the number of courses and the strengthening of disability coping programs. in the 1990s, as special sports curriculum was established, customized prescription for students with disabilities was implemented. Second, the process of changing disability sports is as follows. In the 1960s and 1970s, disability sports were mainly focused on special schools, while in the 1980s, disability sports were expanded by the government. in particular, the hosting of the 88 Seoul Olympics and Seoul Paralympics provides an opportunity to equip the disabled with a system, organization and facilities. in the 1990s disability sports was meaningful in terms of academic progress, and with the quantitative growth of the 1980s and the academic foundations of the 1990s, disability sports in the 2000s provided a legal basis and improved welfare conditions for the disabled. In the future, it is necessary to find a way to solve the value of physical education for the disabled more reasonably.
Purpose The purpose of this study was to examine the structural relationship between the sport values and continuous participation intention of the dance for all participants based on the 4 experience economy theory. Methods Frequency analysis, correlation analysis, confirmatory factor analysis and structural equation modeling using SPSS 21.0 and AMOS 18.0 were conducted to analyze the survey materials. Results First, the entertainment experience was a significant effect on all factors of sports value. Second, educational experience was a significant effect on all factors except sports entertainment value. Third, escapist experiences have a significant effect on all factors except physical value. Fourth, aesthetic experience has a significant effect on all factors of sports value. Fifth, social value and entertainment value was a significant influence on the continuous participation intention. Sixth, entertainment experience and aesthetic experience was a significant influence on the continuous participation intention. Conclusions Through these study results, it was confirmed that 4 experience, sport values and continuous participation intention of dance for all participants had a significant influence on each other.
Purpose The purpose of this study was to investigate the three dimensional joint angles of the ankle, knee and hip during basic long turn, carving long turn, basic short turn and carving short turn. Methods Fourteen alpine ski instructors from Korea Ski Instructor Association participated in this study. Each skier asked to perform 4-types of turning technique, classified by radius and level. 8 inertial measurement units were used to measure three-dimensional joint angles of the ankle, knee and hip joint. Results Significant differences were found the lower extremity joint angles on the mediolateral and vertical axis during long-turn and carving-turn (p<.05). significant differences were found the lower extremity joint angles on the anteroposterior axis in the steering phases 1, 2 and complete phase (p<.05). Conclusions In the Alpine skiing, the short turn requires a complex movement of the lower limb joint compared to the long turn. When performing a long turn, the movement of the ankle joint on the vertical axis are required compared to the short turn. And the carving and short turn need to the movements of the lower limb joint on the mediolateral axis.
Purpose The purpose of this study was to confirm and evaluate the assessment of dehydration, whole body sweat rate, sweat sodium · potassium concentration, and fluid intake during workout in college badminton and rugby athletes using the field sweat test. Methods 14 male badminton athletes and 17 male rugby athletes were measured during an usual training session in a typical environment. USG(urine specific gravity) was measured before the start of training. Whole body sweat rate, sweat sodium·potassium concentration, and fluid intake were measured during and post a session of training. Results USG higher than 1.023 in both groups, which was considered as dehydrated. Sweating rate were 1.037±0.315L/h for the badminton athletes and 1.987±0.386L/h for the rugby athletes. The concentration of sodium and potassium were 53.6±20.2mmol/L, 4.1±0.7mmol/L for badminton athletes, and 55.6±15.2mmol/L, 4.3±0.5mmol/L for rugby athletes, respectively. The loss of sodium and potassium were 1.02±0.48g, 0.08±0.02g for badminton athletes, and 1.95±0.52g, 0.15±0.03g for rugby athletes, respectively. Conclusions In this study, a standard protocol of field sweat test was suggested as a useful factor in evaluating athletes' hydration status and electrolyte loss during a routine in-door or out-door training session. And, it is expected to build reliable data to establish a standard hydration guideline for Korean athletes.
Purpose The purpose of this study was to provide useful information on the improvement of performance by measured the psychological-physiological stresses experienced by elite shooters during a competition. Methods Thirty-eight elite shooters participated in this study (Male = 13, Female = 25). Psychological stress was measured and used for this study based on the stress factors found in the elite target stress study by Park(2015). The cortisol, a physiological stress hormone, was measured using saliva. Results The reliability of the psychological stress sub-factor pre-post analysis results showed no statistically significant. The concentration of cortisol measured on the day before the competition (0.1704 µg/dL) significantly increased immediately before the competition (0.3558 µg/dL). Cortisol immediately before the competition showed negative correlation (r=-.361, p=.036) with the competition score, and the regression variable of cortisol was 13%. Conclusions In this study, physiological stress had a negative effect on elite shooters performance compared to psychological stress.
Purpose The purpose of this study was to find out the physical characteristics of Wushu athletes by comparing the differences on the results of physical fitness between the male athletes of the Wushu national team Taolu and the Sanda group. Methods Measurement of basic and professional fitness based on muscle function, targeting 37 men Wushu national team players (24 taolu, 13 Sanda) in the selection and evaluation contests twice in 2018 and 2019. Body composition, isometric muscle strength, flexibility and equilibrium, anaerobic power, and isokinetic muscle strength. The fitness factors were divided into two groups, Taolu and Sanda. Results First, body fat rate of the Sanda athlete group was significantly lower than that of the taolu athlete group (p<.01). Second, in the isometric muscle strength category(back muscle strength, grip strength), the Sanda athlete group had higher muscle strength than Taolu athlete group, but there was a statistically significant difference only in the left grip strength (p<.01). Third, in terms of flexibility and equilibrium, the taolu players were significantly higher in all items(p<.001). Fourth, in the anaerobic power, the taolu athlete group had higher both the peak power and the mean power, and there were a significant differences(peak power: p<.01, mean power: p<.001). Fifth, isokinetic muscle strength was significantly higher in the right knee flexion of the taolu athlete group (p<.01), and lumbar extensor muscle was significantly higher in the Sanda athlete group (p<.05). Sixth, in the isokinetic strength ratio, the knee flexion ratio of the Sanda athlete group were significantly higher on the left and right knee flexion and extensor ratios (p<.05). In addition, in the lumbar flexor and extensor ratios, the group of Sanda athlete group were significantly higher on the lumbar extensor(p<.05). Seventh, there was no significant difference between two groups in isokinetic muscle power. Conclusions The results of this study can be used as basic data to improve the efficiency of technical and physical training through the analysis of the characteristics of Taolu and Sanda. The effectiveness of this training will help to improve the performance.
