PURPOSE This study presents policy proposals based on literature review and document analysis in relation to sport concussion. METHODS Online documents were collected from sports organizations of the United States, the United Kingdom, and South Korea that either supervise sports concussion management policies or govern specific sports at different levels. RESULTS The results and implications of the study were as follows. First, safety education on sports concussion should be strengthened quantitatively and qualitatively, be required by all sports stakeholders, and will need to be executed by utilizing new technology platforms. Second, sports governing bodies must present a concussion safety policy tailored to each sport by distinguishing between youth and professional sports. Finally, discussions regarding the legalization of domestic sports concussion safety policies should take place in a timely manner. CONCLUSIONS These precautionary approaches would contribute to raising awareness on concussions in sports and help build a safer environment for sports.
PURPOSE This study aimed to analyze the sport biomechanics questions in the ‘Secondary Physical Education Teacher Recruitment 1st Exams’ and find the orientation for future exams. METHODS Twenty-one sports biomechanics questions (49 detailed questions) in the last 7 years (2016-2022) were classified into four types (evaluation content factors, classification of educational goal, sports application or not, classroom connection, and including calculation) and analyzed. RESULTS The recruitment exams had the following characteristics. First, only approximately 22.4% of the questions were related to the secondary physical educational field. Second, only 34% were sports-applied questions. In addition, according to Bloom's classification of educational evaluation, 36.7% of knowledge-level questions, 40.8% comprehension-level questions, and 22.4% application-level questions were accounted for. Finally, the questions tended to be considerably biased towards specific items (kinetics and kinematics understanding and application of linear and angular motion). CONCLUSIONS Sport biomechanics questions in the ‘Secondary Physical Education Teacher Recruitment 1st Exams’ should be based on questions that are likely to occur in the field of secondary physical education, to occur in real sports situations, and to be asked by students. Additionally, rather than asking for simple knowledge or comprehension, the proportion of questions in the application level should be increased.
PURPOSE This study aimed to explore and analyze research impact of Korean ’Kinesiology’ studies, especially in the aspects of international research impact gauged by the citation counts from Scopus bibliometric database. This study contributes to relevant literature in that it is the first endeavour to evaluate the pattern about how the entire Korean ’Kinesiology’ articles have been cited in international articles. METHODS TTwo types of sample articles were collected in this paper. Firstly, 19,867 target articles published in 23 KCI-accredited Korean ’Kinesiology’ related journals from 2001 to 2015. For the Korean target articles, secondly, international citing articles that took advantage of target articles as references were collected from Elsevier’s Scopus database separately. RESULTS As a result, just 5% of the target articles were cited at least once for five years after publication. The topics of top cited research topics include ‘exercise’, ‘physical activity,’ ‘Alzheimer’s disease, ‘ ’body composition’ and ‘insulin resistance’. Besides, the Korean 'Kinesiology’ articles were the most influential to articles about ‘Medicine,’ ‘Health Professions,’ ‘Multidisciplinary,’ ‘Social Sciences,’ and ‘Nursing’. CONCLUSIONS This study showed that one Korean ’Kinesiology’ article was cited 0.09 times on an average in international Scopus-indexed articles. Considering that the average number of citations in domestic articles is 5.6 times, the international citations of Korean ’Kinesiology’ research still have much room for growth. However, this study confirmed that the scope of the international impact is not limited to a few countries, but is spreading to various countries, and its impact has been growing in recent years.
PURPOSE This study aimed to analyze the difference between scores and loss of world-class fencing sabre players. METHODS A total of 78 match videos and 1969 points of international competition over 3 years were analyzed for the nine major competitors of the national fencing team (Males = 5, Females = 4). The characteristics of each skill, body section and location according to the score were analyzed by dividing them into male and female groups. Data were analyzed using IBM SPSS ver. 25.0. RESULTS First, in the situation analysis according to the men's sabre score, attack skills were the most common in the winning situation (447 points, 73%) and in the situation of losing points (389 points, 72%); however, the difference was not significant. In the analysis of the piste location according to the score, B4 was the most common appearing 254 times (41.5%) in the scoring situation and A4, 243 (45%) times in the losing situation, with a significant difference (p < 0.001). Second, in the situation analysis according to the women’s sabre score, 315 attacks (70.6%) were found in the winning situation and 277 (74.7%) in the losing situation; however, the difference was not significant. In the analysis of the scoring body part, the Sixte area scored the highest with 121 points (27.1%), and the arm area lost the most points with 105 points (28.3%); however, the difference was not significant. In the analysis of the piste location according to the score, A4 was the most common in, appearing 179 times (40.1%) in the scoring situation, and 182 times (48.8%) in the losing situation, with no significant difference at the p < 0.001 level. CONCLUSIONS In the men's game, there were many scored points in B4 and many lost points in A4. In the women's game, there were many scored points and lost points in A4; therefore, the difference in goals and losses according to the piste position was confirmed. These results suggest that it is possible to infer the game management patterns of world sabre players and the flow of world fencing.
PURPOSE The purpose of this review was to summarize the current knowledge on the trends in athletes’ health problems (and their preventive strategies) caused by low energy availability (LEA) and relative energy deficiency in sports (RED-S). METHODS In this narrative review, we summarized previous studies by searching the literature in the PubMed, Google Scholar, and Science Direct databases. RESULTS Energy availability (EA) refers to the amount of energy from caloric intake used for exercise, and a LEA is considered as a surrogate marker of RED-S. In several previous studies, chronic low energy availability in female athletes has been reported to cause health problems such as endocrine dysfunctions, immunosuppression, and psychological disorders, and to also affect the hypothalamic-pituitary-gonadal (HPC) axis and bone health. Moreover, it has been suggested that an increase in injury risk and a decrease in exercise performance may occur. CONCLUSIONS Since it can be difficult to recover from the health deteriorations caused by RED-S, early detection (of related signs and symptoms) and prevention are very important. Therefore, athletes, coaches, and parents need to develop educational programs that ease the recognition of the problems caused by various symptoms related to RED-S and promote educational interventions.
PURPOSE This study aimed to investigate the effects of trunk stabilization exercise (TSE) with abdominal expansion maneuver (AEM) that lasted for 8 weeks on postural stability and functional movement in college athletes. METHODS Twenty college athletes participated in the program (AEM=9, Control=11) and were subjected to 8-week TSE. The AEM group performed exercise by applying AEM techniques during TSE, and control group performed TSE without breathing-related instructions. Both groups measured postural stability with lower-quarter Y-balance test (LQYBT) and functional movement with functional movement screen (FMS) before and after applying TSE to verify the interaction before and after this study with the two groups. Two-way repeated analysis of variance was performed to evaluate the differences between groups and time for an absolute value of LQYBT and FMS, followed by Bonferroni’s multiple comparison tests for post-hoc analysis. RESULTS As a result of the left and right LQYBT, there was a significant difference between the time x group (p=.041, p=.033), and post-hoc analysis indicated that there was a significant difference between the AEM and control groups (p=.000, p=,000). Furthermore, the FMS total score indicated that there was a significant difference between the time × group (p=.039), and the post-hoc analysis showed the AEM group had significant results (p=.001), while there were no significant results in the control group (p=.255). CONCLUSIONS Application of AEM during TSE seems to be effective with regard to postural stability and functional movement in college athletes.
PURPOSE High blood pressure and obesity pose significant health problems for older individuals. Previous studies showed that regular exercise improves physical fitness factors and decreases blood pressure and obesity. Therefore, this study investigated differences in blood pressure and obesity according to the physical fitness level of Korean older individuals using the National Fitness 100 data and used them to recognize the importance of maintaining physical fitness through regular physical activity or exercise for older individuals. METHODS From 2013 to 2019, a total of 218,848 subjects (men=74,271, women=144,577) aged ≥65 years who participated in the National Fitness 100 had their muscular strength, muscular endurance, cardiorespiratory endurance, balance, coordination, and flexibility measured, and they were ascribed a fitness level. Blood pressure, body mass index (BMI), percentage of bodyfat, and waist circumference were measured to compare the difference in fitness level. RESULTS There was a significant difference in the systolic and diastolic blood pressure in older men, and the diastolic blood pressure of older women by the fitness level (p<.001). In both older men and women, there was a significant difference in BMI, percentage of bodyfat, and waist circumference according to the fitness level (p<.001). CONCLUSIONS In conclusion, men and women showed different aspects in blood pressure, but Korean older individuals with having a high level of fitness managed their weight and body fat well. The decrease in obesity and improvement of physical fitness through regular physical activity and exercise could be a positive effect on maintaining health and extending healthy life years.
PURPOSE Blood pressure (BP) in hypertensive individuals is reduced by the accumulation of post-exercise hypotension (PEH) induced by a long period of training. This study aimed to investigate the effects of intensity of two different aerobic exercises with identical energy expenditure on post-exercise blood pressure and cardiovascular function in prehypertensive men. METHODS Eleven prehypertensive men in their 30s participated in two trials repeatedly. In the first trial, the exercise was moderate in intensity and continuous (MICE) with 70% of VO2max, and the exercise in the second trial was high-intensity interval exercise (HIIE) with 50% and 90% of VO2max. Each exercise was performed for 30 min, and the variables related to BP and cardiovascular function were measured at certain times for 1 hr during the recovery phase. RESULTS Our main findings are as follows: (1) Systolic blood pressure was significantly lower at 30 and 45 min of recovery time than the baseline in the HIIE trial, and systolic blood pressure was significantly lower in the HIIE trial than the MICE trial at 10, 15, and 30 min of recovery time. (2) The rate pressure product was significantly higher in the HIIE trial than the MICE trial at 15, 30, 45, and 60 min of recovery time. (3) The heart rate was significantly higher in the HIIE trial than the MICE trial at 15, 30, 45, and 60 min of recovery time. (4) Stroke volume was significantly lower in the HIIE trial than the MICE trial at 30 min of recovery time. (5) Cardiac output was significantly higher in the HIIE trial than the MICE trial at 15 min of recovery phase. (6) Total vascular conductance was significantly higher in the HIIE trial than the MICE trial at 15 and 30 min of recovery phase. (7) Total peripheral resistance was significantly lower in the HIIE trial than the MICE trial at 15 and 30 min of recovery phase. CONCLUSIONS The HIIE shows a higher cardiovascular stress than MICE; however, HIIE contributes to the augmentation of PEH and improvement of cardiovascular function. Therefore, HIIE rather than MICE should be suggested in BP control and enhancement of cardiovascular function in prehypertensive males.
PURPOSE This study aimed to explore the functional movement in rope climbing. METHODS The rope climbing experiment included 16 healthy young male participants, and the methods of hand, cross-leg, and foot-hooking climbing were employed. The muscle activity and joint range of motion were measured and analyzed using EMG (Electromyography) and IMU (Inertial Measurement Unit) sensors. One-way analysis of variance was conducted (α<.05). RESULTS The activity of the forearm and biceps muscle was lower in cross-leg and foot-hooking climbing compared to hand climbing (p<.01), and the rectus femoris muscle activity in cross-leg climbing was smaller than that in hand climbing (p<.05). Furthermore, the adductor muscle activity in cross-leg climbing was higher than that of other types (p<.01). The range of motion for the elbow and shoulder flexion was smaller in hand climbing than in other types (p<.05); furthermore, the range of motion in the pelvis, thigh, and knee joint was the smallest in cross-leg climbing (p<.05). CONCLUSIONS Because the pulling muscles such as the forearm, biceps, pectoralis major, and latissimus dorsi play an important role in the entire climbing motion, it is necessary to train the upper-body pulling-muscle group along with strengthening the core and lower body muscles.
PURPOSE This study comprehensively compared the perception and interaction of player–coach in the development of mental toughness in soccer. METHODS Data were collected through semi-structured individual interviews from 12 participants (6 athletes and 6 coaches), analyzed using the grounded theory by Strauss and Corbin, and they were compared to the group of athletes and coaches, respectively. RESULTS The following results were obtained: (1) Both athletes and coaches recognized that the experience of coping with the pressure present in competition was a central phenomenon in the development of mental toughness. (2) Regarding the situation and condition that lead to coping with pressure, the athletes emphasized the individual's goal orientation in the context of competitive situations and environmental conditions, while the coaches emphasized the athletic attitude toward competition and development in childhood. (3) The athlete–coach interaction was identified as an intervening condition affecting the experience of coping with pressure. (4) As the action–reaction strategy for the development of mental toughness, the optimistic thinking was emphasized for athlete and achievement-oriented thinking for coach; thus, it differed in the characteristics of mental toughness. CONCLUSIONS This study presented the results of an integrated comparison of mental toughness, which can vary depending on the contextual specificity (soccer) and the subject of perception (athlete– coach), especially indicating the importance of the player–coach interaction, which can contribute to the strategy to be used in mental toughness development.
