Studia Sportiva最新文献

{"title":"HIIT system programming and some practical problems of its application examined within the sample of selected Czech probands in Brno","authors":"Jan Florian, E. Hurych","doi":"10.5817/sts2022-1-4","DOIUrl":"https://doi.org/10.5817/sts2022-1-4","url":null,"abstract":"High Intensity Interval Training is a training method based on a combination of periods in which high-intensity load alternate with low-intensity exercise or passive rest, the so-called rest interval or inactive phase. Nowadays it is gaining more popularity among the general population and is applied in modern fitness centers. The authors found that more than 95 % sports centers organizing group lessons in Brno offer some form of HIIT (“Tabata System”, especially). Changing one of the HIIT components will affect the efficiency of the whole system. This effect is demonstrable on the aerobic and anaerobic performance and the composition of body tissues. Our goal within the broad research is to find out what effect changing one variable has on the most widely used HIIT program, and we wanted to examine whether the method is suitable for recreational athletes.The authors have made the first step in the form of pilot research described in this article, trying to design the system and applying the components in it. The experiment involved twenty deliberately selected male probands. They were randomly divided into two intervention groups of ten probands. In both intervention groups, we observed: number of repetitions performed, subjective load assessment (on the Borg scale) and heart rate. The original design of the pilot study included three training units per week for two weeks (a total of six training units). Basic multiple articulated exercises (Burpees and Jump Squats) were selected for both sets in these protocols in order to achieve key intensity for HIIT. There were some limitations of the experiment described in the article.The result of the first pilot study was essential concerning the adequacy of the cycle settings. The authors were forced to stop the piloting after the completion of the first week due to the acute overtraining of the probands. The reason to stop the experiment is attributed to an inadequate frequency of training units in individual weeks, which we reflected in the design of the following pilot study and reduced the number to two. The authors have kept the research questions and present the results of the modified piloting below.It can be assumed that the prolongation of the rest interval has an impact on the ability to perform repeated exercises, heart rate and subjective perception of stress in selected exercises. These results of our pilot research are also related to people's desire to get as much as possible in as little (time) as possible. The HIIT method is (in many aspects) more effective than the continuous method. Its undeniable advantage is time saving, but efficiency is \"redeemed\" by intensity and demanding character (proved not just in the described experiments). Where is the line between benefit sport and health-threatening sport? What is the \"correct\" HIIT setting/programming and what causes a change in one of the key variables? Is less sometimes more or more demanding means more effective? Respecting people's","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41554267","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":"Relationship between speed and explosive power of lower limbs in semi-elite football players","authors":"Tomáš Vencúrik, Jakub Fikar","doi":"10.5817/sts2022-1-12","DOIUrl":"https://doi.org/10.5817/sts2022-1-12","url":null,"abstract":"PURPOSE: This study focuses on the relationship between speed (acceleration, maximum speed, and change of direction speed) and explosive power of lower limbs represented by countermovement jump (CMJ) in semi-elite football players. METHODS: Twenty semi-elite football players (n = 20; 25.1 ± 6.2 years) participated in the study. All participants were assessed using the following 5 tests: countermovement jump (CMJ), 5-0-5 Agility test with dominant lower limb turn and non-dominant lower limb turn, 10-meter linear sprint, 30-meter linear sprint. RESULTS: Pearson’s correlations (p ≤ 0.05) calculated the relationship between CMJ and speed tests. Subjects displayed a very large correlation between 10 and 30-meter sprints and CMJ (r = −0.75 and −0.76). There was a moderate correlation between 505 COD tests (non-dominant and dominant) and CMJ (r = −0.54 and −0.61, respectively). CONCLUSIONS: There are large to very large relationships between speed and power attributes in semi-elite soccer players, especially between linear speed and CMJ. Improving the explosiveness and power of lower limbs can lead to increasing velocity and enhancing sport-specific speed. Keywords: acceleration, maximal speed, change of direction speed, countermovement jump, correlation","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41926274","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":"Benefits of 6 weeks of high interval intensity training based on basic fitness variables and losing weight during the pandemic of covid-19 period.","authors":"Torki Ishak, Djouadi Khaled, H. Válková","doi":"10.5817/sts2022-1-10","DOIUrl":"https://doi.org/10.5817/sts2022-1-10","url":null,"abstract":"Abstract: Background: Due to the authorization to do outdoor sports in Algeria, the government allowed the sports that do not require physical contact. The purpose of this study is to show the benefits of 06 weeks of high interval intensity training (HIIT) based on body weight movement and sprint on developingmaximum oxygen consumption (vo2max), power, maximum aerobic speed (VMA), endurance, and losing weight during the pandemic of covid-19.Methods: 11 persons participate in this study belonging to the fitness club in Bordj Bou Arreridj - Algeria - (age: 32.18± 8.08 year, high:  1.78± 0.052 cm, weight: 84.24± 11.25 kg, BMI: 26.50± 3.95 kg). the protocol was contained 3 session moderate intensity, pretest, 6weeks HIIT 3 sessions per week, and ensure that the heart rate is 100% during the exercise finally, post-tests.Results: similar increases (p < 0.05) in distance of running by (226,54m, 17.30%). And VMA it enhanced by 2.26 km/h with 17.34%. While Vo2max it’s developed by 17.28% (7.92 mL/kg/min). with very large effect size (ES=1.75). In addition, the power of legs it boosted by 3.17% (6.27 cm) with small effect size (0.58). Also, results indicate decrease in weight by 2.73 with large effect size (0.87).Conclusion: the outdoor exercise it seems safe to do during the pandemic of covid-19. Results highlight great effect of HIIT on enhancing (vo2max, power, VMA, endurance, and losing weight). ","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44251424","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":"Relationship between motor learning and general intelligence","authors":"P. Horička, J. Šimonek","doi":"10.5817/sts2022-1-5","DOIUrl":"https://doi.org/10.5817/sts2022-1-5","url":null,"abstract":"AIM: The aim of the research was to find out the differences in the level of motor learning (ML) and general intelligence (IQ). The research sample included 120 boys and girls of primary school and grammar school aged 12-17 years and the subsequent identification of a possible relationship between the two indicators. METHODS: 120 students Elementary school (ES) and Secondary Grammar School (SGS) took part in testing the level of motor learning and intelligence (n = 120). We evaluated the level of ML in boys and girls in the demonstration of learned gymnastic elements. We used the intelligence test to determine the level of general intelligence [1]. RESULTS: The results did not show significant differences in the level of motor learning and intelligence between the genders in either age category. Correlation analysis confirmed a significant relationship between ML and IQ excluding the gender factor (r = -0.297). When gender was taken into account, the relationship was seen only in boys (r = -0.312). We note that we found a lower rate of ML in students with a higher level of intelligence. CONCLUSION: We assume the continuity of certain mental and motor processes, which is called motor intelligence. The results of our research did not show significant differences in the level of ML and IQ in both genders. Boys slightly dominated in ML, girls in IQ. This difference decreases with increasing age.  ","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48845811","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 comparison between ecological-dynamic and cognitive approach to improve accuracy in basketball shot","authors":"S. Aliberti","doi":"10.5817/sts2022-1-1","DOIUrl":"https://doi.org/10.5817/sts2022-1-1","url":null,"abstract":"Background The shot is a fundamental skill in basketball that requires high accuracy, because is the tool by which players translate their team's offensive actions into points. Basketball is one of the most practiced situational sports in physical education hours in schools. However, it is still mostly teaching according to a traditional, prescriptive-based model. The aim of the study was to compare prescriptive teaching with ecological-dynamic learning for improving shooting accuracy in a group of 3rd year high school students. Methods The sample is made up of 32 students (16 ± 0.72) divided into 2 groups: Group A, consisting of 16 students who were administered a training protocol based on the ecological-dynamic approach, and Group B, consisting of 16 students, who followed a cognitive approach. The close range shooting test was administered in and out to test the students' level of shooting accuracy. A t test for paired dependent samples was performed for each group to test which of the two groups had the greater improvement. Data were analyzed using SPSS. Results The results were statistically significant in both cases (p < 0.05); however, group A had a greater improvement in shooting accuracy than group B. Conclusion The ecological-dynamic approach was able to improve accuracy in shot more than the cognitive approach in a group of high school students.","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43240407","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":"Relative Age Effect in Elite Swimmers in U14 Czech Championship","authors":"M. Bozděch, A. Agricola, A. Křehký, P. Schlegel, J. Zháněl","doi":"10.5817/sts2022-1-2","DOIUrl":"https://doi.org/10.5817/sts2022-1-2","url":null,"abstract":"PURPOSE The issue of the Relative Age Effect (RAE) has been studied in the theory of sports for more than 30 years. Most studies concentrate on team sports, while the area of some individual sports like swimming can be considered still underexplored. METHODS The aim of our study was to verify the RAE in young elite swimmers (n = 198) who participated in Czech Republic U14 Championship (1) in male and female samples (2) according to swimming disciplines and distances (3) and performance (times in individual disciplines) between individual quartiles / semesters of birth. The analysis was performed with the use of adequate statistical (chi-square test, Kruskal-Wallis H test, Mann-Whitney U test) and effect size (effect size w index, eta-square test, effect size r index) tests.RESULTS The results showed a different intensity of RAE sex-differences (male: w = 0.033; female: w = 0.006). In the division by the swimming disciplines and swimming distances, statistically significant values with large effect size were found in males in 50 m freestyle, 200 m individual medley, 100 m butterfly and 200 m butterfly. However, this did not apply for girls. Analysis of differences in performance showed a significant difference between the dependent variables (sex, distance, discipline) by different independent variables of quartile / semester of birth with large effect size only in cases of male 100 m breaststroke and female 200 m individual medley.CONCLUSIONS The issue of RAE should be circulated among the coaches working with youth, athletes, sports organizations, but also parents of athletes in order to avoid the termination of actively spent time or drop-outs.","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42042596","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":"Effect of Selected Corrective Exercises on Glenohumeral Rotation range of Motion in Overhead Athletes with Scapular Dyskinesis","authors":"H. Naderifar, Leila Ghanbari","doi":"10.5817/sts2022-1-6","DOIUrl":"https://doi.org/10.5817/sts2022-1-6","url":null,"abstract":"In overhead exercises, performing the repetitive and high-intensity throwing movements causes to reduce the internal rotation range of motion (IR ROM) in the dominant shoulder by applying small and continuous pressures on the glenohumeral joint capsule. This factor can cause scapular dyskinesis (SD) and predispose to shoulder injuries. The purpose of this study was to investigate the effect of eight weeks of selected corrective exercises on the shoulder rotation range of motion and SD in overhead athletes. The present study is a cross-sectional study that was conducted on 54 volleyball players with SD. Goniometer and Lateral scapular slide test (LSST) were used to measure the shoulder rotation ROM and SD, respectively. The experimental group participated in eight weeks of selected corrective exercises. Data were analyzed using an independent t-test. In the experimental group, the shoulder IR ROM and SD after exercise showed a significant increase (P= 0.001) and a decrease (P= 0.001), respectively; while in the control group, the changes were not significant. Therefore, the selected corrective exercises can lead to an increase in the shoulder IR ROM and correct the SD in overhead athletes, and it is recommended to consider it as a part of their routine exercises.    ","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45287139","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 Effects of Different Rest Interval Lengths on Acute Quarter-squat Performance in Female","authors":"Kateřina Strašilová, P. Vajda","doi":"10.5817/sts2022-1-7","DOIUrl":"https://doi.org/10.5817/sts2022-1-7","url":null,"abstract":"The inclusion of resistance training in the athletic preparation of young athletes is associated with increased time and personal demands. This study compared the effect of different rest interval (RI) lengths on quarter-squat performance in two age groups. Sixteen girls (age 12.20 ± 0.55) and 16 women (age 23.13 ± 2.23) performed three series of 10 quarter squats (10 repetition maximum [RM] load) with different RI times (1 min, 2 min, 3 min) between the three series. Each participant was randomly tested under all the RI conditions. The number of successful repetitions, power, and speed were recorded for each set using by FitroDyne device. The women completed significantly less repetitions in the third set than in the first set for the 2-min and 1-min RIs (9.38 ± 1.54, p = .05 and 8.44 ± 2.42; p = .003, respectively). There was observed a significant decrease in mean power and speed in the 3-min RI between the first and second set and in the 1-min RI between the first and third sets.  No significant differences in numbers of completed repetitions and mean power were evident in girls for any RI condition, but there was a significant decrease in mean velocity in the 2-min RI between the first and second sets in this group. These results show that recommendations for adults may be not suitable for girls; the girls’ performance in three sets of 10 quarter squats was less affected by RI than the women’s performance.","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41627758","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":"Change in physical activity and stress during COVID-19 in a sample of older adults with exercise habits","authors":"P. Vajda, Kateřina Strašilová, L. Svobodová","doi":"10.5817/sts2021-2-1","DOIUrl":"https://doi.org/10.5817/sts2021-2-1","url":null,"abstract":"BACKGROUNDː The COVID-19 outbreak forced many states to introduce public health and social measures (PHSM), which may pose an obstacle to performing physical activity (PA).METHODS: This study investigated PA levels and their changes and perceived stress in a sample of 193 participants (aged 71.21 ± 4.87 years) engaged in exercise lessons prior to PSHM. Data were collected via an online survey distributed directly to the participants. The survey included two instruments: the International Physical Activity Questionnaire and the Perceived Stress Scale.RESULTS: The results indicate that sports habits may be a protective factor in staying active and meting PA recommendations. Nevertheless, there were no associations between the number of exercise lessons in the pre-COVID-19 period and PA level or the perceived change in PA during PSHM. Ability to replace the cancelled exercise lesson with PA of similar duration and intensity was negatively associated with PA levels and its change. The PSS-10 score suggests that the sample did not experience a significant increase in perceived stress, but the relationship of this outcome to PA is unclear.CONCLUSIONS: The promotion of alternative PA that could be performed during PHSM and building long-term exercise habits in older adults should be considered. ","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44268809","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":"Match-fixing as a Threat to Sport: Ethical and Legal Perspectives","authors":"Ladislav Mravec","doi":"10.5817/sts2021-2-4","DOIUrl":"https://doi.org/10.5817/sts2021-2-4","url":null,"abstract":"This article aims to show how match-fixing is a threat to sport, not only from an ethical but also from a legal perspective, and to explain the various challenges of combating match-fixing in sport on the national and international level. To achieve this, the first step of the article is to explain corruption in sport, the values of sport and their endangerment through match-fixing, and then the crucial factor of sport autonomy is explained. Further, the article discusses various national and international legal norms and measures in the fight against match-fixing. On the international level there is discussed the current state of play of the Council of Europe Convention on the Manipulation of Sports Competitions (the so-called Macolin Convention) and the Group of Copenhagen, as the follow-up network of national platforms. Finally, the article makes recommendations regarding the better investigation of match-fixing and concludes with a critical appreciation of findings in the fight against match-fixing. ","PeriodicalId":36179,"journal":{"name":"Studia Sportiva","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42209284","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}