Central European Journal of Sport Sciences and Medicine最新文献

{"title":"An Investigation of the Psychological Status of Amateur Athletes Before and After a Triathlon Competition","authors":"C. McDonald, C. Losty, Roisin MacCarthy","doi":"10.24018/ejsport.2023.2.3.83","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.3.83","url":null,"abstract":"Triathlon is a multisport, endurance event which places significant psychological demands on athletes. To date, few studies have compared psychological states of triathletes before and after competition. Furthermore, there is a lack of research assessing psychological indicators of overtraining in triathletes. This study aimed to create a psychological profile of amateur athletes before and after a triathlon competition, and to investigate psychological symptoms of overtraining syndrome. \u0000Forty amateur triathletes were recruited to participate in this study. \u0000Participants completed the Profile of Mood States (POMS), Passion Scale (PS), Pittsburgh Sleep Quality Index (PSQI), and General Self-Efficacy Scale (GES). Questionnaires were administered the day before a triathlon event, and then repeated the day after the competition. Athletes reported poor sleep quality, and mood states followed the iceberg profile (i.e., high vigor, and low anxiety, depression, anger, fatigue, tension, and confusion). Significantly higher pre-competition scores emerged for tension (pre: 8.85±5.4, post: 4.18±5.0, p < \u00000\u0000.001) and anger (pre: 3.57±3.8, post: 2.80±4.1, p = \u00000\u0000.021). Correlational analyses performed using Spearman’s rank correlation coefficient revealed that pre-competition sleepquality (r = -0.37, p = 0.019) and tension (r = -0.34, p = 0.031) were related to self-efficacy, and that tension (r = 0.47, p = 0.002), and fatigue (r = 0.57, p < 0.001) were related to pre-competition sleep quality. Lower scores for pre-competition vigor (r = -0.40, p = 0.010) were associated with poorer sleep quality. The study highlights significant relationships with sleep quality, and potential indicators of overtraining syndrome in amateur triathletes. Experimental research analyzing the effects of interventions to target the highlighted psychological characteristics in amateur triathletes is recommended. Coaches and practitioners should monitor athletes’ sleep quality before competition to optimize performance and prevent overtraining syndrome.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83390551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does the Kinetic Chain Work in the Forehand Drive Open Stance? What Electromyographic Analysis of the latissimus Dorsi and the Posterior Deltoid Muscles Showed Us","authors":"C. Mourtzios, Ioannis Athanailidis, Vasilia Arvanitidou, Dimitrios E. V. Papadimitriou, E. Kellis","doi":"10.24018/ejsport.2023.2.3.81","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.3.81","url":null,"abstract":"This study examines electromyographic activity of the latissimus dorsi and the posterior deltoid, which act as competitors and agonists, respectively, during the rotational movement in the forehand drive technique with an open stance, among young tennis players aged 12-16. Eleven athletes participated in the research. The average of the maximum activation of the latissimus dorsi recorded with EMG, in the movement of the forehand drive corresponds to 4,15±1,137 and for the posterior deltoid, the maximum activation was 6,70±1,90. The results of the measurements indicate differences in the sequence of activation between the two muscles. The posterior deltoid was the second muscle to contract after the latissimus dorsi. At the start of the rotating action, the latissimus dorsi was most fully activated, while the maximum activation posterior deltoid was towards the end of the movement. The t-test showed P<0.05 between the two means. So, we found that the function of the motor chain follows the coordination of the involvement of the two muscles to perform the forehand drive with the open stance, which means that the rotational motion transfers significant energy which translates into speed and strength. These results are very important to coaches, physical trainers, and physiotherapists in providing appropriate treatment, training, and rehabilitation protocols not only for young athletes but also older in age.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81382306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reality of Common Mistakes When Using Mathematical Methods of Statistics in Analyzing and Processing Data in the Field of Sport Science","authors":"Nguyen Van Phuc, Ta Huu Hieu, Nguyen Duc Thanh","doi":"10.24018/ejsport.2023.2.3.79","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.3.79","url":null,"abstract":"Based on conventional research methods in the field of Sport Education, the results of the article have been systematized with formulas and algorithm systems commonly used in analysis and processing Sport Science Data, thereby identifying the errors that are often made when applying Mathematical Methods of Statistics, to be the basis for offering the application of mathematical theory of methods in analyzing and processing data, contributing to improving the quality of scientific research in school.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88651319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of High Intensity Interval Training on Body Composition in Obesity Patients: Literature Review","authors":"Muh Alif Kurniawan Sam, M. F. Hidayatullah, Febriani F Ekawati","doi":"10.24018/ejsport.2023.2.3.76","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.3.76","url":null,"abstract":"Obesity is a major threat to health in various parts of the world. This study will also elaborate further on the effects of HIIT on body composition in obese people. This study uses the literature review method using articles from the last 3 to 9 years. Articles searched through ScienceDirect were 348, MDPI were 29 articles, Scopus were 178 and Springer were 317, so the total population of articles found was 872. This study used Preferred Reporting Items for Systematic Reviews and Meta Analyzes and found a sample of 12 articles. The results of the study revealed that there was a decrease in fat mass of 0.16 kg, 1.81 kg to 4.7 kg, and as much as 0.4 liters of total body water reduction, besides that waist circumference also decreased, but it was different from fat-free body mass which increased by 0.55 kg. In conclusion, HIIT can reduce body composition in the form of fat mass, total body water and waist circumference for obese people, but there is an increase in fat-free body mass.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83689432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors Associated with Knee and Heel Pain in Children: An Observational Web-Based Survey for 1,200 Parents with Young Japanese Footballers Aged in 8–12 Years","authors":"S. Sasaki, Y. Nagano, K. Koyama","doi":"10.24018/ejsport.2023.2.2.75","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.75","url":null,"abstract":"The characteristics of injuries in young children differ from those of adult or adolescent players. To maintain a good physical condition among young children, knowledge of the factors associated with knee and heel pain in growth phase is essential. This study investigated the factors that correlated with growth-related knee and heel pain in Japanese football players aged 8 to 12 years. We collected 1,200 pieces of data (each 300 children in 3rd to 6th grades) on children’s characteristics from their parents using a web-based questionnaire. Player’s age, weight, height, leg dominance, playing position, playing surface, and weekly training volume were collected from each parent. In addition, respondents were asked whether their children had experienced knee or heel pain within the previous 12 months. If they answered “Yes” for the pain, the cause was investigated as following categories: growth related pain (Osgood-Schlatter disease or Sever’s disease), contusion, fracture, sprain, and others. Univariate analyses (independent t tests and chi-square tests) were used to compare the characteristics between the groups with and without growth-related knee and heel pain. To investigate the association of the clinical factors with growth-related knee and heel pain, multivariate logistic regression analyses were performed, and the results were presented as the odds ratios (OR) and 95% confidence intervals (CI). Among young Japanese footballers, 11.2% and 10.7% had episodes of growth-related knee and heel pain within recent 12 months, respectively. Older age, larger body size, and increased training volume per week were associated with recent knee and heel pain in univariate analyses. In contrast, leg dominance, playing position, and surface were not associated with any episode of growth-related knee and heel pain. According to multivariate logistic regression analyses, older age (OR=1.24; 95% CI, 1.01–1.52), higher percentile rank in body height (OR=1.34; 95% CI, 1.04–1.74), and more training hours per week (OR=1.06; 95% CI, 1.03–1.09) were significantly associated with the episodes of growth-related knee pain in past 12 months. Moreover, higher percentile rank in body weight (OR=1.50; 95% CI, 1.21–1.85) and more training days per week (OR=1.46; 95% CI, 1.29–1.65) were associated with growth-related heel pain. The present study used a web-based questionnaire to investigate the factors associated with knee and heel pains in young football players aged 8 to 12 years. Age, body size, and external load such as weekly training volume were associated with knee and heel pain in children. Coaches and guardians, who monitor children’s growth, should pay attention to modifiable risk factors that correlated with knee and heel pains in childhood.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78610284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Physiological Profiles of 2022 Asia Cup Winning National Sri Lankan Netball Team Using Cardiopulmonary Exercise Testing (CPET) as The Gold Standard","authors":"S. Senanayake, K. G. D. A. Karunanayake, Attanayake M. D. K. Attanayake, R. S. P. Fernando, R. Maddumage, Sanduni H. N. Jayasinghe, A. A. K. K. Athapaththu, Mayakrishnan Sugeeswar","doi":"10.24018/ejsport.2023.2.2.74","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.74","url":null,"abstract":"Using cardiopulmonary exercise testing (CPET) in a laboratory setting is considered the gold standard in evaluating physiological fitness. This allows sports scientists to not only measure the maximum oxygen uptake (VO2Max) but to get an insight into the overall cardiopulmonary fitness of an athlete. Despite winning the Asian netball cup in 2022 and getting qualified to take part in the netball world cup no such testing has ever been conducted on the national netball pool of Sri Lanka up to this study, leading to lack of physiological norms when determining cut off points in the selection process of the players into the national team. With this background we aim to conduct Physiological testing, using cardiopulmonary exercise testing (CPET) to establish these benchmarks and norms for physiological fitness for Sri Lankan national netballers.\u0000All 13 members of the 2022 Asia cup winning national netball pool of Sri Lanka, who have participated in at least 10 tournaments/matches within the last 6 months was included in the study. All CPET was conducted in the morning and in a temperature and humidity-controlled environment. Bruce protocol will be used to carry out the CPET.\u0000All the netball players who conducted CPET achieved more than 80% of their peak heart rate indicating a maximum effort. Average peak VO2 value of our study was 29 mil/min/kg. The highest VO2 values were obtained by C players and GD players. There was a significant difference of VO2 values between C,GD and GS players. Despite the relatively low overall VO2 max values most of the players apart from GS achieved more than 90% of their predicated VO2 (VO2/kg predicted%) values. GA achieved more than 80% of their predicted VO2. Oxygen delivery to muscle was more than 100% of the predicated among all the players except GS. (C-Centre, GA-Goal Attack, GD-Goal Defence, GK-Goalkeeper, GS-Goal Shooter, WA-Wing Attack, WD-Wing Defence).\u0000Although our sample archived relatively low overall VO2 max values compared to western standards, most of the players apart from GS achieved more than 90% of their predicated VO2 values, with GA achieving more than 80% of their predicted. A statically significant correlation was observed between oxygen delivery to muscle at anaerobic threshold.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"114 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81045160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Methodology for Selection Starting Line-Up of Football Players in Qatar World Cup 2022","authors":"Belhouchette Hatem, Khatrouch Ikram","doi":"10.24018/ejsport.2023.2.2.56","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.56","url":null,"abstract":"The process of player selection in multi-player sports is a complex multi-criteria problem. In Football, the role of a coach is selecting players as the starting line-up that is formed subjectively without regard to various criteria. The decision of the coach can impact team performance. This paper proposes a new model for selection starting line-up integrating criteria in FIFA World Cup 2022.The aim is to use MOORA method in football player selection process. We test the efficiency of the model using France National football team and we demonstrate how the methodology can facilitate decision making by selecting players.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75024799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Patients Coming to the Emergency Department with Snow Sports Injury","authors":"Ömer Metin, P. Durukan","doi":"10.24018/ejsport.2023.2.2.69","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.69","url":null,"abstract":"Snow sports pose serious risks from minor soft tissue traumas to injuries of vital areas. For this reason, we think that the importance of the multidisciplinary approach of the emergency room doctors and to pay attention to the prehospital safety methods is absolutely necessary. The study included patients who applied to Erciyes University Faculty of Medicine, Department of Emergency Medicine between 01.11.2018 and 31.03.2019 with snow sports injuries. After snow sports traumas, the first application was in December and the most frequent application was in February with a rate of 37.3% (n=121). 1.06 patients applied daily and peaked with 4.32 patients daily in February. 56.2% (n=182) of the patients who presented to the emergency department with snow sports trauma were male and the mean age was 26.78±10.83 (6–65) were professionals. According to the frequency of traumas of the athletes, ski, snowboard and sled use depended. The patients most frequently applied with extremity traumas, followed by head, spine, and trunk traumas. X-rays were used in extremity traumas, while CT imaging was preferred in head and trunk traumas. 93% (n=301) of the patients were discharged from the emergency department, 25.3% (n=82) were consulted, 7% (n=23) were hospitalized and surgical treatment was performed for 3.7% (n=12) of the patients.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"201 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83423910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aspects of the Preparation of Elements that Make Transitions from the Low Bar to the Upper Bar","authors":"Ghe. Neagu","doi":"10.24018/ejsport.2023.2.2.64","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.64","url":null,"abstract":"The paper deals with the issue of preparation and presentation of the elements that make transitions by dismounting from the low bar to the upper bar regarding the increase of diversity and continuity of integral uneven bar exercises. In this idea, I present new technical methods of performing this action through hitting on the thighs on the back in two technical variants. Elements with facial and dorsal run-up departure the two technical methods of transition to the upper bar can be easily adapted as bar climbs. These new technical actions to perform the dismount bring notes of originality and diversity in the new mobility and biomechanical expression of the possibilities of the human body, in interaction with the apparatus, in a unique technical way for performance artistic gymnastics.  Collaterally, I present the possibility of taking over the two technical variants by the boys with the adaptation of these elements to parallel bars. From the methodical analysis of learning back fly dismounts, I present the formation of a new group of descents through hecht with back fly. From the dynamics of the development of the back fly I present new technical modes of presentation and combinations in the direct connection, after the upper bar is gripped. I also present a new technical way to present hecht with a 180 turn, after gripping the top bar.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86886953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Analytical Study of Some Biomechanical Variables and Achieving Fingerprinting in Discus Throwing for Applicants","authors":"H. Alamiri, Maher J. Ameen","doi":"10.24018/ejsport.2023.2.2.71","DOIUrl":"https://doi.org/10.24018/ejsport.2023.2.2.71","url":null,"abstract":"The effectiveness of discus throwing is one of the activities that require special physical abilities and mechanical conditions aimed at achieving the best horizontal distance for this competition, and performance is associated with achieving the highest instantaneous strength and rapid strength in the muscles of the working body, especially the trunk, legs and arm shooting, and the researchers believe that the amounts of these forces can give a good indication of what is supposed to be achieved from the integration of skill performance, which aims to achieve the highest speed at the end of the arm shooting, so the control of the values of these The forces, especially the two legs through the device (Dyna foot) can help the researcher to make the right decision if these forces are optimally exploited to achieve integration of performance, as well as monitoring the amount of pressure and force affecting the weight of the thrust and the extent to which these variables are used to identify errors and develop solutions to improve the exertion of the appropriate special force for them, and the researchers assumed that there is a significant correlation between the momentary force exerted by the two legs when placing the throw with the biomechanical variables of the throwing performance, The researchers used the descriptive analytical approach to process data and information related to the nature of the problem. The researchers chose a sample of Iraqi heroes with a number (4) elite disc shooters, and the researcher concluded that there is a significant correlation between the momentary force and the pressure exerted by the feet and the momentary force in the trunk and arms with some biomechanical variables to perform in the discus throw, as well as between the rapid strength of the legs with the variables of the disc launch.","PeriodicalId":36509,"journal":{"name":"Central European Journal of Sport Sciences and Medicine","volume":"162 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74086446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}