{"title":"RETROSPECTIVE STUDY OF THE WORKLOAD OF A FEMALE TENNIS PLAYER OVER TWO SEASONS - SINGE CASE STUDY","authors":"Tjasa Filipcic, A. Filipcic","doi":"10.52165/kinsi.27.3.21-35","DOIUrl":"https://doi.org/10.52165/kinsi.27.3.21-35","url":null,"abstract":"In recent years, the use of advanced wearable technologies in tennis has improved the ability to monitor workload and performance indicators. Using the device Armbeep Tennis, attached to the wrist of an entry level female tennis player, we recorded 97% of the tennis training and all official matches over two annual competitive seasons. The aim of the study was to determine the variation of different workload indicators during the preparation and competition phases in one annual season and to compare the workload indicators between the two seasons. We found no significant differences in the results of the training, tournament, and performance indicators between the two seasons. Our tennis player trained more on average in the second year (Y1 = 90.9 min, Y2 = 97.5 min) and the percentage of active time was also higher (Y1 = 30.6%, Y2 = 32.4%). A higher number of shots per week (Y1 = 3109.1, Y2 = 2869.4) was observed in the first year, while the number of shots per hour was higher in the second year (Y1 =420.6, Y2 = 430.1). The pace of the rally was higher in the first year (Y1 = 24.6, Y2 = 23.4). The differences between the other workload indicators were not significant in the two years. This single case study provides good insight into the overall progression of training and competition over two annual seasons and can serve as a basis for determining workload indicators for novice tennis players or those just embarking on this path.","PeriodicalId":43206,"journal":{"name":"Kinesiologia Slovenica","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49164809","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":"INVESTIGATION ON SELF-EFFICACY ON JOB SATISFACTION OF SOCCER REFEREES","authors":"A. Y. Karafil, Mehmet H. Akgül","doi":"10.52165/kinsi.27.3.70-82","DOIUrl":"https://doi.org/10.52165/kinsi.27.3.70-82","url":null,"abstract":"Referees assume a similar role with the players for the purpose of successfully finalizing a sports competition/match. Majority of the current studies have focused on the players/athletes’ role whilst the number of studies investigating the performance of the referees who manage the match/competition is relatively few. This study aimed to reveal whether professional self-efficacy, which is considered to be a significant predictor on the job satisfaction of referees, has an effect therein. The participants of the research comprise of 204 soccer referees assigned in different classifications. The referee self-efficacy scale (REFS) and a job satisfaction scale for the referees were used as instruments of collecting research data. The analysis of whether the research data were distributed normally or not is followed by the data analysis process. After determining that the data exhibited a normal distribution, parametric tests were performed. A path analysis was performed using the independent sample t-test for two independent variables, one-way variance (Anova) for more than two independent variables, the pearson correlation analysis was used to determine the relationship between the variables and the AMOS program is used in order to evaluate the hypotheses developed within the scope of the research. In line with the findings obtained, a positive significant relationship was identified between the self-efficacy and the job satisfaction of the referees (p<0.01). ). In addition, significant differences were identified as a result of binary and multiple comparisons performed within the context of the research variables (p<0.05). Accordingly, the self-efficacy of the referees was found to have a significant effect on their job satisfaction (p<0.01).","PeriodicalId":43206,"journal":{"name":"Kinesiologia Slovenica","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43574172","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}
Frane Erčulj, Marko Marković, B. Leskosek, M. Supej
{"title":"INTER-RATER RELIABILITY OF CERTAIN PARAMETERS OF BASKETBALL JUMP SHOT","authors":"Frane Erčulj, Marko Marković, B. Leskosek, M. Supej","doi":"10.52165/kinsi.27.3.5-20","DOIUrl":"https://doi.org/10.52165/kinsi.27.3.5-20","url":null,"abstract":"in sport training practice. The aim of this study was to establish whether basketball coaches are capable of uniformly (congruently) evaluating the release time, release angle, ball rotation and overall correctness of a jump shot by observing it with the naked eye. The study included a sample of 13 coaches (six with more and seven with less experience) whose task was to evaluate basketball jump shots made by young basketball players aged 15.1 (± 0.75) years on average from a distance of 4.5 m. The values of Pearson’s correlation coefficients and multiple correlation coefficients (generally above 0.7) as well as Cronbach’s alpha coefficients (above 0.9) and Kendall’s W coefficients of concordance (mostly below 0.1) show a high level of uniformity and congruence in the evaluations of the quality (correctness) of a shots as a whole and also individual shot parameters. Quite a lower level of uniformity and congruence can be established in the evaluations of the consistency of individual parameters. This applies to both groups of more experienced and less experienced coaches (raters). The results allowed an assessment that the levels of reliability of the evaluation of the group of at least six raters are appropriate for scientific research. Given the low values of the ICC (Inter Class Correlations), only equalling about 0.6, we can say that only one rater did not meet the scientific evaluation criteria.","PeriodicalId":43206,"journal":{"name":"Kinesiologia Slovenica","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46714837","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":"COMPARISON OF ANKLE DORSIFLEXION IN\u0000CLOSED KINEMATIC CHAIN OF FOOTBALL\u0000PLAYERS AND ICE HOCKEY PLAYERS","authors":"","doi":"10.52165/kinsi.27.3.48-56","DOIUrl":"https://doi.org/10.52165/kinsi.27.3.48-56","url":null,"abstract":"Limitation in ankle dorsiflexion is associated with\u0000the development of injury to the musculoskeletal\u0000system. However, little is known about the impact of\u0000different sports disciplines on the dorsiflexion range\u0000of motion in the ankle joint. Therefore, the aim of the\u0000study is to compare the dorsiflexion range of motion\u0000of ice hockey players and football players. The\u0000sample included 26 professional football players\u0000with an average age of 22.46 (± 3.75). The control\u0000group included 37 professional ice hockey players\u0000with an average age of 24.62 (± 4.34). The range of\u0000motion of ankle dorsiflexion in closed kinematic\u0000chain was tested using a mobile phone application.\u0000The mean ankle dorsiflexion range of motion in\u0000football players was 41.40° (± 5.36) at the right ankle\u0000joint and 45° (± 5.91) at the left ankle joint. The\u0000mean ankle dorsiflexion range of motion in football\u0000players was 42.49° (± 6.92) in the right ankle joint\u0000and 45.92° (± 5.45) in the left ankle joint. The ranges\u0000of motion of the dorsiflexion of the right ankle (p\u0000<0.016) and the dorsiflexion of the left ankle (p –\u00000.031) ranges of motion in ice hockey players were\u0000significantly higher compared to football players.\u0000The average ankle dorsiflexion range of motion in\u0000the closed kinematic chain of ice hockey players was\u0000significantly higher compared to football players","PeriodicalId":43206,"journal":{"name":"Kinesiologia Slovenica","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45565306","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}