Purpose The purpose of the study was to investigate the effect of vibratory stimulus on the static postural control of 8 healty senior adults. Methods To achieve this goal, all subjects participated in two different kinds of static postural control tasks. Task 1 was a static postural control task, where both-legs stand on the ground. Second task was an unstable static postural control task using only single leg stance. As they maintain their balance, 6 different vibratory stimulus were provided on the sole of their feet(personal threshold 0%, 80%, 90%, 100%, 110%, 120%). Results The results of the study were as follows: First, there was no significant differences in postural control ability according to different types of vibrator intensity. Second, there was a significant difference in single-leg postural control ability according to vibrator intensity. Third, there was a significant difference in anterio-posterior stability according to the different types of vibrator intensity. Conclusion Stochastic resonance using vibratory stimulus was more effective in the single leg stance task, rather than the double leg stance task. Moreover, sub-threshold vibratory stimulus(80%, 90%) intensity were more effective than higher vibratory stimulus(100%, 110%, 120%).
Purpose The purpose of this study was to investigate the effects of coupled high frequency rTMS and prism illusion in elderly stroke patients, based on the result of previous studies which discovered the effect of bilateral training, mirror rehabilitation treatment, and rTMS. Methods This is a case study of 4 stroke patients who were homogeneous on the basis of selection criteria such as brain injury area, duration of onset, degree of upper limb movement function. A total of 24 rehabilitation sessions were conducted three times a week during the training period, and TMS(transcranial magnetic stimulator), EMG, motion analysis system, and prism optical glasses were used for apparatus. Results The results of the study were as follows: Combined rehabilitation exercises were found to be beneficial to restore upper limb function in stroke patients. Particularly, the maximum speed of stretching and JTT(Jebsen-taylor Test) performance showed improvement after training. The amount of total map volume and MEP(megnetic evoked potential) increased in evaluation of neurophysiology. Conclusion The upper limb dysfunction of stroke patients could be restored by combine rehabilitation exercises.
Purpose The purpose of this study was (1) to develop and to apply flipped learning strategies in Physical Education(PE) classes based on Sportscasting Model and (2) to examine the responses of students after PE lesson. Methods Participants were 10th high school students(N=216, male=115, female=101) in high school. Instruction strategies of flipped learning was developed after theoretical investigation, and the unit plans for curling and instructional materials were developed and applied. Open-ended questionnaires and in-depth interviews were used to collect the data. Qualitative content analysis combined with of structures in lesson was used to analyze the data. Results Results showed that (1) 11 instruction strategies of flipped learning were developed, (2) and the unit plan combining out-of class activities and in-class activities organically based on Sportscasting Model and instructional materials for unit of curling were developed and applied. In step of sportscasting, forcing relationship method-sportscasting based on the survey of students was developed and applied. (3) And 31 factors of Sportscasting Model and 15 factors of flipped learning were drawn from the analysis of questionnaires and interviews. Conclusion And to conclude, this research has a value of early study to develop and apply instruction strategies of flipped learning, the unit plan and instructional materials for combining Sportscasting Model with flipped learning organically. Discussions were provided in terms of the development of flipped learning applied in PE classes and responses of students.
Purpose The purpose of this study was (1) to develop and to apply the PE classes based on Sportscasting Model on Creativity and Character and (2) to analyze the effects of PE classes on Creativity and Character. Methods Participants were 10th high school students(N=172) who had not experienced PE classes on Sportsasting Model. Data were collected using An Integrated Creativity Test(Lee & Lew, 2012), open-ended questionnaires and in-depth interviews with students. The data were analyzed through paired samples t-test and qualitative content analysis. Results Results showed that (1) Table-tennis and volleyball lessons on Sportscasting Model were developed and applied, and (2) significant differences were observed in creative thinking and creative personality of students’ creativity scores after lessons. And 14 creativity factors and 10 character factors were drawn from the analysis of questionnaires and interviews. Conclusion And to conclude, Sportcasting Model is efficient in developing creativity and character. Discussions were provided in terms of the development and application of PE classes based on Sportsasting Model and the effectiveness of Sportscasting Model.
This study was designed to develop a communication training program for college ice hockey teams and examine the effects of this program. College ice hockey players and coaches participated in this study. The various types of data were collected and analyzed to assess the needs of the program and to develop the program with expert meetings. To analyze the effects of the developed program, questionnaires, experience reports, and in-depth interviews were conducted as measures. The results of this study are as follows. First, ice hockey team communication consisted of eight factors (i.e., sympathy, respect, trust, two-way verbal communication, firm expression of opinion, training program communication, developing rapport, and cohesion). Thus, the program developed based on eight factors and consisted of three stages of total 12 sessions which was 90 min to 100 min long. Second, this program increased communication satisfaction, coach-athlete interaction, group cohesion and exercise effectiveness, and these quantitative results were statistically significant. Moreover, qualitative analysis revealed that this program enhanced sympathy, social cohesion, and task cohesion among participants as well as positively changed their communication skills better than before. The communication training program which was developed through this study could provide basic information of a communication training program in the sports domain and positively influence overall sports team effectiveness and performance.
This study conducted to explore K-League (Korea Professional Football League) referees’ psychological experience and coping strategies just after the moment of wrong judgment. Open-ended questionnaire were conducted on 35 full-time referees who participated in the K-League winter training camp. The data were categorized by inductive content analysis. The results were as follows. Psychological experience yielded 45 raw data points, which were based on the following 10 sub categories; increased anxiety, rumination wrong judgment, concern about reprimand, and feeling apologetic; and four general categories including, psychological fragmentation, feeling helpless, concern about reputation, and acknowledgment of wrong judgment. Thus, K-league referees experience a psychological turbulence just after the moment of the bad calls and worsen feelings of helplessness about the wrong decisions. Also, K-league referees worry about further disadvantages following the misjudgement and admit their bad calls feeling sorry for teams and athletes who were in the incidents. Coping strategies yielded 55 raw data points from which the following categories were identified 11 sub categories; increasing concentration, attempting to forget wrong judgment, apologizing on wrong judgment, and change in thinking; and four general categories including, emotional self-support, avoiding situation, correcting the error and thinking, and changing of refereeing approach. Therefore, K-league referees enhance their concentration in order to not reoccur wrong judgement after the moment of the mistakes and try to forget the incidents of wrong judgement. Also, K-league referees apology to the teams and athletes who experienced the bad calls and make efforts to correct the mistakes if possible. Moreover, K-league referees try to modify a criteria of judgement in order to manage aftereffects of wrong judgement and make decisions correctly by approaching the scenes of the wrong judgement. The study emphasizes the importance of referee psychological stability on the field and the need for psychological support. The study is expected to encourage further research on sports referees in Korea to ensure they receive appropriate psychological support.
The purpose of this study was a investigate the endothelial function of prehypertensive during dynamic exercise. Hypothesis of this study was to impair the endothelial function in prehypertensive compared to normtensive during dynamic handgrip exercise. Eleven healthy prehypertension (24±2 yrs) and ten healthy normotensive (25 ± 2 yrs) were recruited in this study. Participants were performed dynamic handgrip exercise in one contraction per second at 30% of maximum voluntary contraction for three minutes. Vascular (blood vessel diameter, blood flow) and cardiar response (stroke volume, heart rate and cardiac output) were measured at rest and during exercise. Flow mediated dilation (FMD) was decrease significantly in prehypertensive less than normotensive (p<0.05) at rest, and vasodilation of prehypertensive was reduced significantly less than normitensive during exercise (p<0.05). All the cardiovascular responses were aot significantly different at rest and during exercise between prehypertensive and normotensive. These results suggest that endothelial function is impaired in prehypertensive compared to in normotensive
This study aimed to explore the types of traumatic event experienced by Volleyball players and then prepare to take-off the serial process of posttraumatic growth to schematize a causal network by organizing the factors for overcoming adversity. Participants experiences were collected by distributing open-ended questionnaires to 77 professional Women's volleyball players in 2013-2014 and collected data was categorized by inductive content analysis. These results were schematized by the causal network. As a result of the study, according to the trauma were categorized into four general areas: member conflict, competence loss, physical injury, and coach conflict and the emotions relative to the trauma were categorized into four general areas: powerlessness, pressure, dejection, and hostility also coping factors were categorized into three general areas: social support, intervention strategies, and psychological control. Finally, positive growth emerged as psychological leap, performance improvement, psychological maturity, and emotional stability. And as a result of the categorized study, bring about a better understanding to the posttraumatic growth by causal network. Based on the study results, that volleyball players experienced a positive development on themself after overcoming the problem that they had suffered psychological scars from a traumatic event. In doing so, they contributed to the formation of resources that helped them in their positive lives. In this regard, this study expects to provide the players who have been scratched in mind because of the traumatic experience.
This study aims to suggest the guide line for weight category sports(Taekwondo, Judo, Wrestling, Weightlifting, and Boxing) who have to lose weight to pass weigh-in before games. Reference data was collected from RISS, Medline, PubMed, SciELO and effects of short term weight loss on physiological variables(body composition, physical fitness, blood components, oxidative stress and hormone, immune function) were analyzed. Also, weight loss procedures for weight category sports athletes were analyzed in details. The results of the research are as follows: weight category sports athletes prefer short term (3~5 days) weight loss methods (3~5%) with dietary control, sweating and exercise. Physical changes caused by the loss in body weight, fat-free mass, and BMI, however, do not affect body fat percentage. Different changes of physical strength element depend on weight reduction period. In short term weight loss method, anaerobic exercise capacity, muscular strength, and reaction time partially decrease and affect staying power. In contrast, long term weight loss method do not affect aerobic and anaerobic exercise capacity. Furthermore, most of previous studies show that blood component change has negative effect on body water balance, stress-related hormone, and immune function. In conclusion, short term weight loss method negatively affects athletic performance of weight class competition athletic. Therefore, careful long term weight loss methods are recommended with dietetic consideration to prevent dehydration during weight loss period. Excessive weight loss on lightweight athlete should be prevented by institutional basis as well.
The purpose of this study was to examine whether the difference between ingestion of nutrition supplements for 8 weeks can regulate physical activities and fatigue recovery. Fifty one middle-aged women participated in this study and were divided into placebo, ingestion of 20g energy supplement and ingestion of 40g energy supplement groups. Energy supplement mainly consists of carbohydrates and proteins. All subjects take in this supplement one time per a day for 8 weeks. Physical activity and fatigue recovery were measured before and after ingestion of energy supplement for 8 weeks by using the Wingate anaerobic and a blood tests. In the Wingate anaerobic test, the peak power(p<.01) and average power(p<.05) were significantly increased in ingestion of 20 and 40g supplement groups compared to the placebo group. Although concentrations of lactate and growth hormone in the blood didn’t show a significant differences among groups, blood concentrations of cortisol and ammonia were further enhanced in ingestion of 20 and 40g supplement groups compared to the placebo group(p<.001). The results of present study provide evidence that energy supplement mixed with carbohydrates and proteins may be effective to increase physical activity as well as to reduce blood concentration of fatigue-related factors after exercise.
