PURPOSE This study was designed to propose a quantitative base training evaluation method through alpine ski training monitoring using a triaxial accelerometer. METHODS Twelve Korean alpine ski athletes, six each in France and New Zealand, participated in this study. Activity data during training and daily living were collected for 7 days via the Actigraph GT9X. The collected data were downloaded through ActiLife Ver 6.13.1. Energy expenditure was calculated with Freedson (2011), and the resting metabolic rate was corrected using the Harris & Benedict (1918) formula. Further, the physical activity intensity classification criteria and METs formula of Freedson (1998) were used to classify hourly activity intensity. The collected data were organized by date, time, intensity, and energy expenditure using Microsoft Excel 2016. Differences between weekdays vs. weekends and skiing vs. physical training were analyzed through a paired sample t-test using Windows SPSS 23 with a significance level of a=.05. RESULTS First, both groups showed repetitive on and off high-intensity activities during scheduled ski training and competition. Second, moderate-intensity activities accounted for an average of 6-10%, and the weekly total time and intensity of MVPA was very high. Finally, the group from France showed differences in total energy expenditure during weekdays vs. weekends (p<.05) and the energy expenditure of both ski training and physical training during weekdays vs. weekends (p<.05). The New Zealand group showed a difference in total energy consumption during weekdays vs. weekends (p<.05). CONCLUSIONS A systematic training program based on quantitative training evaluation should be developed for alpine ski athletes to maintain proper rest and exercise intensity levels.
PURPOSE The purpose of this study was to develop the estimating equations for 4 types of Wingate Anaerobic test setting. METHODS 80 male elite athletes performed 4 trials of the Wingate Anaerobic test by each type. Subjects were conducted the retest one week later. Data collected from the Wingate Anaerobic test included mean power, peak power, and power drop for 30s were measured. Coefficient of correlation was used for validity of type 1(DOS version) and the other types(ver. 2.24, 3.3.0, and 3.2.1). Pearson’s correlation coefficient was used to examine the reliability of test and retest. Simple regression analysis was used for calculating the estimating equation. RESULTS There was significant correlation for absolute value(Watt, p<.01) and relative value(Watt/kg, p<.01) of mean power, absolute value(W, p<.01), relative value(Watt/kg, p<.05), and power drop rate(%, p<.01). Test and retest reliability was excellent for all test variables(p<.01). CONCLUSIONS From the all results, the estimating equation was calculated to convert all outputs from each type to the other types of the Wingate Anaerobic test setting. These findings suggest that the estimating equations are compatiable to 4 types of Wingate Anaerobic test setting.
Purpose Based on Haidt's social-intuitionist theory, this study analyzes the differences in ethical decision-making between sport athletes and the general public in order to understand the ethical judgment tendencies of athletes and examine the determining factors influencing their judgment from the perspective of their environment. In so doing, this study hopes to motivate education for enhancing ethical consciousness as well as institutional policy. Methods To this end, 200 elite athletes in their twenties registered for more than 10 years at the Korean Sports Association and 200 college students in their twenties from five universities in Seoul were selected for comparison. Response trends for each item were analyzed by percentage, and differences between groups were confirmed by the χ2 test method. Results The results are as follows. First, in general ethical situations, athletes usually showed a compulsory ethical view that emphasized principles, whereas in a sports situation, they showed a double consciousness and revealed a very strong consequential ethical view which put much emphasis on outcome. Second, athletes strongly maintained a Confucian ethical view that recognized ethics as a norm compared to the general public and, as a result, it was found that paternalism was relatively stronger than rationalism in their ethical decision making. Third, athletes regarded other people's thoughts and group interests as important criteria for ethical decision-making rather than individual thoughts and interests, and showed a group-centered mindset which emphasized group harmony and relationship. Fourth, while the general public viewed excellent athletes as those with excellent skills and good personality, and valued their morality, athletes thought relatively little of the influence and importance of morality in their success. Finally, it was found that coaches and managers were fundamental to the formation of the athlete’s moral view. Conclusion An in-depth understanding of sports participants' ethical awareness should come first in order to enhance ethical consciousness in sport. I hope this study will work as a catalyst for research which approaches athletes' ethical consciousness from a socio-cultural context.
Purpose The purpose of this study was to investigate characteristics of levels of physical activity in considering gender and different types of competition-oriented physical activity classes using three-dimensional accelerometers. Methods A total of 981 students(505 male students, 476 female students) in six different types of physical education classes were participated in this study. All of the six different types of physical education classes were competition-oriented classes, and levels of physical activity were accessed by three-dimensional accelerometers. Data were analyzed using t-test and ANOVA. Results First, descriptive analyses of participation time of levels of physical activity showed that MVPA of physical education classes is 10.26 mins (22.89%) on average, and, MVPA showed differently in different types of physical education classes in the order of T ball(14.61 mins), flying disk(12.61 mins), soccer(10.78 mins), volley ball(10.56 mins), basketball(9.64 mins), and table tennis(5.73 mins). Second, female students showed significantly lower levels of MVPA in all the different types of physical education classes. Third, post-hoc analyses showed that significantly higher levels of MVPA were found in T ball physical education classes and significantly lower levels of MVPA were found in table tennis physical education classes, compared to other types of physical education classes. Conclusions MVPA in physical education classes is not satisfied with recommended MVPA, and MVPA in Korean physical education classes is lower than MVPA in same types of physical education classes in other countries. In addition, significant mean differences of MVPA are found between male and female students, and new sports physical education classes show higher levels of MVPA compared to classic sports physical education classes. These results indicate that competition oriented physical education classes widely used in Korea need to find ways to increase MVPA and to overcome different levels of MVPA between male and female students.
Purpose The current study reexamined the financial value of National Fitness Award. Methods To determine the economic value of National Fitness Award, we incorporated 6 willingness to pay(WTP) models using contingent valuation method(CVM). The data were collected from 250 members and 250 non-members of National Fitness Award(NFA) who were over 19 years old. Out of 500 completed questionnaires, total of 489 usable questionnaires were used for data analyses. Among 489, the WTP were calculated after 125 protest responses were discarded. The data were analyzed with SPSS 24.0 for frequency analysis, descriptive statistics, reliability test, and exploratory factor analysis. Stata 14.0 and R programs were used for calculating WTP. Results First, WTP was positively influenced by household income. Second, WTP was positively influenced by satisfaction level among members. Third, willingness to pay (WTP) for the National Fitness Award were 30,877won (Mean WTP), 29,455won (Median WTP), 25,829won (Truncated WTP). The average WTP was 28,720won. Conclusions Although National Fitness Award has been provided as free service to Korean people, previous study noted problems in facility and promotion. For the National Fitness Award to possess sustainability with proper service quality, it may need to be changed to fee based service. The current study suggested that, should it be changed to fee-based service, the proper price for the service is 25,000won.
Purpose This study was designed to develop a team building program that helps freshmen student-athletes to adapt to college life and enhance team function and process and to examine the effects of this program. It could provide basic information of a team building program that effectively accelerates team function in the college team sports domain. Methods The program was developed through this process. First, an open-ended questionnaire was utilized to discover the needs of the program. Second, the results of needs of the program and important factors of team-building program were taken into consideration. Third, expert meetings were conducted. Consequently, the program consisted of three stages of total 10 sessions which was 90 min long. The questionnaires(Group Cohesion Questionnaire and Coach-Athlete Relationship Questionnaire), experience report, and program evaluation form were used as measures to identify the effects of the developed program. SPSS version 24.0 and inductive analysis were used to analyze the data. Results The results of this study are as follows. First, there was no statistically significant influence between developed program and the level of group cohesion. In contrast, the level of coach-athlete interaction was significantly increased. Second, the analysis of experience report revealed that this program reduced interpersonal conflict between team members and formed positive interpersonal relationship by mind of respect and consideration. Conclusion In conclusion, the hierarchical culture was strongly formed and team member suffered from the dual role of athlete and student in Korean college team sports. Thus, these should be resolved in order to enhance team function and process. As a results, this process could increase team performance as well as offer psychological stability to college student-athletes.
Purpose Evaluating the aging of senior and providing optimal sevices are important things for successful aging. This study identified functional fitness related with heath of aged 65 years or older and developed an age scale (longevity fitness age) for assessing their aging. Methods Participants were 458 older people (166 male, 292 female). They were divided into healthy group and disease group. Healthy group was used for the development of the longevity age equation and disease group was for investigating the validity of the equation. Participants completed 13 function fitness variables. The first principal component obtained from a principal component analysis was used to compute the equation. All variables except for grip strength and carrying beans were correlated with chronological aged. Grip strength and variables related lower functional fitness had differences between healthy group and disease group. Finally, 4 variables were selected for the equation. Results It was the following: longevity fitness age=0.942*X1+2, 185*X2+0.673*X3+0.051*X4+0.588*chronological age+58.401, where X1=standing up from a supine position, sec (s), X2=maximum walking (s), X3=standing up and sitting down a chair (s), X4=one leg balance with eyes open (s). The longevity fitness age of healthy group do not have a difference compared to their chronological age but disease group had a difference significantly. Age difference (chronological age-longevity fitness age) of sedentary group in disease group was significantly bigger than its active group. Longevity fitness age could assess an aging of senior. Conclusion We suggest that it can use as the tool for early detecting senior who need the health care service.
The purpose of this study was to describe the epidemiology of Korean collegiate injuries during 2015. Collegiate student-athletes(n=167) in six sports (badminton, baseball, basketball, rugby, taekwondo, and volleyball) participating in all practices and games during pre-season, in-season, and post-season were tracked via the injury surveillance system(rate, location, type, and cause of musculoskeletal injury). Injury rate for 1000 athlete-exposure(AE) and 1000 time-exposure(TE) were calculated with 95% confidence intervals(CI). We captured a total of 961 injuries, a rate of 19.29/1000 AE(95% CI=18.07, 20.51) and 0.16/1000 TE(95% CI=0.15, 0.17). Commonly injured body locations were knee(17.5%, n=168), thigh(16.1%, n=155), ankle(12.1%, n=116), and finger(8.4%, n=81). Injuries were mostly diagnosed as contusion(40.1%, n=385), ligament sprain(21.1%, n=203), and laceration/abrasion/skin injury(13.5%, n=130). Common causes were contact with another athlete(44.6%, n=429), contact with moving object (12.7%, n=122), overuse/atraumatic(11.9%, n=114), and contact with non-yielding object(9.4%, n=90).
Impact of 9-week strength training of racing cyclist candidate during training camp on body composition, racing cyclist specific fitness, and racing cycle performance was examined. Two by two (cyclist experience, y/n and strength training (ST) participation, y/n) experiment design was employed. A total of 20 candidates participated and divided evenly into four groups; 1) experienced cyclist participating ST (CST), 2) non-experience cyclist participating ST (nCST), 3) experienced cyclist no participating ST (CnST), and 4) non-experience cyclist no participating ST (nCnST). Two programs were introduced; 1) non ST containing, pre-existing program emphasizing on sprint and acceleration training and 2) new-program containing ST and sprint and acceleration training. CST and nCST participated the latter program. Before and after the 9-week training, body composition, racing cyclist specific fitness, and racing cycle performance was tested. After 9 weeks, all groups decreased body weight(p<0.05), body fat content(p<0.05), body mass index, and CST and nCST increased lean body mass(p<0.05). Muscular strength measures such as grip strength, low back strength, 1RM of bench press, 1RM of squat, and anaerobic capacity improved after 9 weeks in all groups(p<0.05). The magnitude of changes was greater in order of CST, nCST, CnST, nCnST. Time trial of 200 meter sprint was faster after 9 weeks in all groups except CnST while 500 meter sprint was improved only in nCnST(p<0.05). After 9 weeks, regardless of previous cyclist experience, those who participated in ST ranked high places at racing cycle competition. Both training programs for the candidates improved body composition and racing cyclist specific fitness. When strength training was added to pre-existing training program emphasized on sprint and acceleration, the racing cycle performance was enhanced. Strength training for racing cyclist is highly recommended to improve their racing performance.
The purpose of this study was to investigate the effect of running economy and energy return in lower extremities according to the increase of bending stiffness of the shoes, furthermore to investigate the relationship between running economy and energy return for the improvement of sports performance. Subjects employed for this study were 10 healthy male college students who have not had the experiences in lower extremities injuries. Four different kinds of shoes in bending stiffness as with 0.56 N/mm, 0.74 N/mm, 0.96 N/mm, 1.21N/mm were used respectively. 3-D cinematography and pulmonary gas analyzer were utilized for energy return and energy consumption data during running according to the increase of bending stiffness of the shoes to obtain the following results. As the bending stiffness of running shoes increased, the statistical significance were not founded, however, the tendency of decrease in max. flexion moment and power, increase in max. extension moment and power in lower extremity joint were showed. Joints energy showed no statistical significance in phase 1, however, the tendency of lesser absorbtion as the bending stiffness of running shoes increased were showed. More energy were generated as the bending stiffness of running shoes increased in phase 2 with no statistical significance. Energy economy increased according to the increase of bending stiffness of running shoes. Negative correlation were showed between flexion moment of hip joint and energy consumption(p<0.05). Slightly higher degree of correlation between max. flexion power of hip and ankle joint and energy consumption were showed without statistical significance. Negative correlation were showed between joints energy and energy consumption for ankle joint in phase 1(p<0.05).
