Scientific Journal of Sport and Performance最新文献

effect of a laser device on some biomechanical variables of the rotational phase in the achievement of 100 m freestyle swimming for the Iraqi team (16-18 years old) 在伊拉克队（16-18 岁）100 米自由泳比赛中，激光装置对旋转阶段某些生物力学变量的影响

Scientific Journal of Sport and Performance Pub Date : 2024-07-27 DOI: 10.55860/zhow5603

Semaa Zaher Yahya, Bushra Kazem Abdul Rida, Omar Waleed Abdulkareem

{"title":"effect of a laser device on some biomechanical variables of the rotational phase in the achievement of 100 m freestyle swimming for the Iraqi team (16-18 years old)","authors":"Semaa Zaher Yahya, Bushra Kazem Abdul Rida, Omar Waleed Abdulkareem","doi":"10.55860/zhow5603","DOIUrl":"https://doi.org/10.55860/zhow5603","url":null,"abstract":"The researchers have discovered weaknesses in the rotational phase of the 100-meter freestyle event, including a lack of proper movement direction and control of biomechanical variables necessary for swimmers to achieve high rotational accuracy, which leads to outperforming competitors. The objective of this study was to investigate the effect of using a laser device on improving the performance of the rotational phase among swimmers on the Iraqi national team. The experimental approach was conducted on a sample of 6 swimmers, representing 100% of the target population. The researchers concluded that the utilization of a proposed laser device in the rotational phase resulted in positive differences in biomechanical variables, contributing to the enhancement of swimmers' performance and increasing the horizontal distance achieved. Consequently, the researchers recommend the implementation of a laser device during the rotational phase to detect weaknesses and enhance strengths, thereby facilitating coaches in the development of swimmers.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"7 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141797886","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}

引用次数: 0

Social attitudes toward appearance, social physique anxiety and the use of social media before and after COVID-19 in young adults 年轻人在 COVID-19 前后对外貌的社会态度、社交体质焦虑和社交媒体的使用情况

Scientific Journal of Sport and Performance Pub Date : 2024-07-19 DOI: 10.55860/nrqe8483

E. Kosmidou, Alkistis Gavriilidoy

{"title":"Social attitudes toward appearance, social physique anxiety and the use of social media before and after COVID-19 in young adults","authors":"E. Kosmidou, Alkistis Gavriilidoy","doi":"10.55860/nrqe8483","DOIUrl":"https://doi.org/10.55860/nrqe8483","url":null,"abstract":"Body image and related issues are issues that have attracted research interest for many years before COVID-19 period. There are still many points that can be revealed. The purpose of the present study was to examine whether body image, social body anxiety, and social media use differed following the COVID-19 pandemic in young adults. In the present study participated 384 young adults with mean age 22.88 years (SD = 6.04). Before COVID-19 period participated 203 subjects (108 males and 95 females) after COVID-19 period participated 181 subjects (80 males and 101 females). They completed self-reported questionnaires examining sociocultural attitudes toward appearance (SATAQ-4), Social Physique Anxiety, the use of Social Media and personal demographic information. After COVID period internalization/ muscular and internalization/ thin decreased and men scored higher than women. On the other hand, pressure by media increased especially for women. There were no differences in pressure by others (family or peers). Before COVID period men and women hand similar levels of pressure for thin body, as they scored higher in the pressure by media, but after COVID period men and women reported different levels of pressure to be thin. In Social physique Anxiety women had higher levels than men and higher levels after COVID period than before. The prediction of SPA revealed significant differences before and after COVID-19 period. Studies should be conducted after the COVID -19 period in young adults, as body image and social media usage have changed.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"103 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141821520","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}

引用次数: 0

Does chewing impact performance in sports activities? 咀嚼是否会影响体育活动中的表现？

Scientific Journal of Sport and Performance Pub Date : 2024-07-19 DOI: 10.55860/pcwg3559

Qian Zhou, Manabu Tsukamoto, K. Kubo, K. Kizaki, K. Azuma

{"title":"Does chewing impact performance in sports activities?","authors":"Qian Zhou, Manabu Tsukamoto, K. Kubo, K. Kizaki, K. Azuma","doi":"10.55860/pcwg3559","DOIUrl":"https://doi.org/10.55860/pcwg3559","url":null,"abstract":"Chewing is a simple and effective method for managing psychological stress and maintaining optimal physical and mental health. This study aimed to systematically review the potential benefits and disadvantages of chewing in sports. We conducted a comprehensive literature search for all relevant articles sourced from the Cochrane Central Register of Controlled Trials, MEDLINE, and PUBMED. We used “chewing OR mastication OR masticatory” and “sport OR sports OR training OR exercise OR physical fitness OR athletic OR athlete OR performance.” We adopted a three-step screening process for titles, abstracts, and full-texts to select eligible articles. After applying our inclusion and exclusion criteria, we performed a full-text screening of 101 articles. The results showed that chewing could improve muscle activation, force production, muscle strength, and postural stability, positively affecting sports performance, especially in rugby, judo, kendo, and climbing. The beneficial effects of chewing on sports performance may be associated with the activation of central nervous system circuits, an increase in arousal level and alertness, and improvements in cognitive ability. In contrast, chewing gum poses a potential risk of laryngeal spasm during activities, such as swimming or cricket. Attention should be paid to chewing gum while engaging in sports.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141822771","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}

引用次数: 0

impact of sport-specific achievement and affiliation motives on young athletes' dropout and persistence in elite sports 体育运动特有的成就动机和归属动机对年轻运动员退出和坚持精英体育运动的影响

Scientific Journal of Sport and Performance Pub Date : 2024-07-19 DOI: 10.55860/glqc1549

Sebastian Schröder, Elke Knisel

{"title":"impact of sport-specific achievement and affiliation motives on young athletes' dropout and persistence in elite sports","authors":"Sebastian Schröder, Elke Knisel","doi":"10.55860/glqc1549","DOIUrl":"https://doi.org/10.55860/glqc1549","url":null,"abstract":"This study aims to compare the sport specific achievement and affiliation motive structures of athletes who later decide to dropout or continue their elite sports career. In addition, groups of athletes were analyzed separately according to age, gender and type of sport in order to identify possible group differences. 146 young elite athletes were analyzed (64 girls, 82 boys, mean age: 13.55, SD = 1.14) and self reported about their motive structure. The data were collected using the German Achievement Motive Scale-Sport and the German Affiliation Motive Scale Sport. Significant differences were found between the athletes who dropped out from junior elite sports and athletes who continued in the fear of failure of the achievement motive. The analysis of gender differences shows that female athletes generally exhibited significantly higher levels of fear motives. We found no differences between female athletes who continue and discontinue the sport career. The male athletes who dropped out showed a higher level of the hope of affiliation und fear of rejection. When comparing the different age groups, it was found in the older age groups that the fear to fail motives differs significantly between the adherence and the dropout group. The results indicate that the fear of failure represents an unfavourable motivation profile for a long-term sporting career. Considering that the motivational structure has an impact on continuing a sports career the motivational profile has to be diagnosed at an early stage and then tackled accordingly in order to avoid an early dropout.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"106 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141821791","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}

引用次数: 0

Analysis of goal situations at the World Floorball Championship 2022 2022 年世界地掷球锦标赛进球情况分析

Scientific Journal of Sport and Performance Pub Date : 2024-07-12 DOI: 10.55860/ydsg8090

A. Zderčík

引用次数: 0

Exercise speed and workload effects on muscle hypoxia in vastus lateralis muscle during squatting exercises 下蹲运动时运动速度和工作量对阔筋膜肌肉缺氧的影响

Scientific Journal of Sport and Performance Pub Date : 2024-07-12 DOI: 10.55860/knxz7210

Tetsuo Imano, Masaaki Nakajima

{"title":"Exercise speed and workload effects on muscle hypoxia in vastus lateralis muscle during squatting exercises","authors":"Tetsuo Imano, Masaaki Nakajima","doi":"10.55860/knxz7210","DOIUrl":"https://doi.org/10.55860/knxz7210","url":null,"abstract":"Background: The study aimed to examine the effects of varying exercise speed and joint motion range (opting for either full knee extension or sustained knee flexion) on the intramuscular hypoxic environment, a key factor in muscle hypertrophy, during squat exercises. Methods: The participants were 17 healthy male and female students from Kibi International University, without back or knee pain at the time of evaluation. Two squat variations were performed: squats with full knee extension (Locked group; L group) and squats without full knee extension (non-locked group; NL group). The exercises were conducted in the following sequence with intervals: 12 s of non-locking (NL12), 12 s of locking (L12), 8 s of non-locking (NL8), 8 s of locking (L8), 4 s of non-locking (NL4), and 4 s of locking (L4). Tissue Oxygen Saturation (StO2) in the right vastus lateralis muscle, under blood flow restriction during squat exercises, was measured using near-infrared spectroscopy. Results: The minimum StO2 for NL12 was significantly lower than the resting StO2 values. Similarly, the minimum StO2 values for L12 and L8 were also significantly lower than the resting StO2 values. The minimum StO2 value for 8 s was significantly lower than at rest only in group L. Conclusion: When performing squat exercises, it is beneficial to reduce the exercise speed and increase the knee joint’s range of motion. This adjustment enhances the work of the quadriceps muscles, thereby creating an intramuscular hypoxic environment and promoting muscle hypertrophy.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"223 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141834232","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}

引用次数: 0

Biomechanics of lateral movements 横向运动的生物力学

Scientific Journal of Sport and Performance Pub Date : 2024-07-12 DOI: 10.55860/xexk5613

Luis A. Parada, R. L. Bona, Carlo M. Biancardi

{"title":"Biomechanics of lateral movements","authors":"Luis A. Parada, R. L. Bona, Carlo M. Biancardi","doi":"10.55860/xexk5613","DOIUrl":"https://doi.org/10.55860/xexk5613","url":null,"abstract":"Lateral displacements are part of the so-called unusual patterns of human locomotion, a motor activity of great interest for the sciences of human performance, rehabilitation, engineering, and biomechanics. Sagittal plane displacements, abundantly studied, present mechanical and energetic differences, but also very similar muscular structures and synergies. The mechanical, energetic behavior and muscular synergies of lateral displacements in humans, on the other hand, are less well known. Studies that incorporate mechanical work, energy cost and muscular synergies simultaneously, would be of great contribution to give an integral answer to this modality of human locomotion. Given the identification of the absence, through a previous systematic review, of approaches that simultaneously incorporate these variables, this article aims to present an argumentative review of the literature, focusing on the mechanical and energetic aspects and the mechanical models of lateral displacements as part of non-habitual patterns of human locomotion. A better understanding of the determinants and mechanical models of lateral displacements is relevant to generate advances in their application in areas such as clinical rehabilitation, injury prevention, robotics, expenditure activities and performance in different sports, among others.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"21 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141654942","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}

引用次数: 0

Nutrition status of elite Jiu-Jitsu athletes during training season 柔术精英运动员在训练期间的营养状况

Scientific Journal of Sport and Performance Pub Date : 2024-05-08 DOI: 10.55860/zqgp3540

Kanyaporn Paiyarat, T. Techakriengkrai, A. Jamphon, Nattika Penglee, N. Polyai, Weerawan Techakriengkrai

{"title":"Nutrition status of elite Jiu-Jitsu athletes during training season","authors":"Kanyaporn Paiyarat, T. Techakriengkrai, A. Jamphon, Nattika Penglee, N. Polyai, Weerawan Techakriengkrai","doi":"10.55860/zqgp3540","DOIUrl":"https://doi.org/10.55860/zqgp3540","url":null,"abstract":"Optimizing high-intensity Jiu-Jitsu requires careful nutritional consideration, impacting body composition and performance. Balancing dietary intake with expenditure enhances athlete performance. This study, conducted with ten healthy Jiu-Jitsu athletes from the Jiu-Jitsu Association of Thailand, scrutinized their dietary intake compared to recommendations and its correlation with body composition to enhance performance and training adaptations. Participants completed three days of 24-hour dietary recalls. body composition was assessed using bioelectrical impedance analysis. Across both genders, total energy intake is inadequate, with carbohydrate consumption falling significantly below the recommended levels (p < .05). Female athletes showed significant positive correlations between dietary intake and body composition, notably with protein intake and skeletal muscle mass percentage and the skeletal muscle mass index (r = .895, and .963, respectively, p < .05). Conversely, male athletes displayed no significant correlations, but a broader analysis across genders revealed a strong positive correlation between protein consumption and muscle mass (r = .685, p < .05). The study highlights inadequate dietary intake, particularly in carbohydrates, among Jiu-Jitsu athletes during training, potentially compromising competition performance due to insufficient energy sources. Addressing these nutritional deficiencies is crucial to optimizing performance and body composition, emphasizing the need for dietary practice improvements among Jiu-Jitsu athletes.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"15 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141001365","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}

引用次数: 0

Was the 2022 FIFA World Cup in Qatar a bad omen for the future of football? 2022 年卡塔尔世界杯是足球未来的凶兆吗？

Scientific Journal of Sport and Performance Pub Date : 2024-04-23 DOI: 10.55860/fmwx7642

Norbert Griszbacher

{"title":"Was the 2022 FIFA World Cup in Qatar a bad omen for the future of football?","authors":"Norbert Griszbacher","doi":"10.55860/fmwx7642","DOIUrl":"https://doi.org/10.55860/fmwx7642","url":null,"abstract":"Over time, football (soccer) has surpassed its core functions to become a pivotal element within the entertainment industry: billions tune in to watch mega-events such as the Champions League, European Championship, or the World Cup, and even individuals who aren’t avid fans experience certain facets of this phenomenon. As games are strongly commercialized today, organizations persistently strive to innovate the sport (e.g., introducing VAR or 10-15 minutes extra time), the number of games per season increases, and mega-events venture into unfamiliar territories, exemplified by the recent winter World Cup in Qatar. This study compares data from the last two World Cup seasons to address a fundamental question: How did the unconventional Qatar tournament affect the 2022/23 football season? Analysis revealed that while the 2022 World Cup produced impressive statistics, the club season witnessed a decrease in goals and assists (GA) compared to 2018, indicating potential challenges with the transition to the Qatari conditions. Factors such as playing position, national team federation, club league tier, and league position were identified as significant contributors to these transitional challenges. These findings gain added importance with Saudi Arabia hosting the 2034 World Cup, underscoring the need for more research to grasp the challenges ahead.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"48 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140667350","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}

引用次数: 0

Hand grip strength test is not an indicator of flexibility performance among teenagers 手部握力测试不是青少年柔韧性的指标

Scientific Journal of Sport and Performance Pub Date : 2024-04-23 DOI: 10.55860/frvg6056

Ahmad Alhussin Alali, Jiang Wen Ming, Nor Fazila Abd Malek, Mohd Hafizuddin Baki, Nur Ikhwan Mohamad

{"title":"Hand grip strength test is not an indicator of flexibility performance among teenagers","authors":"Ahmad Alhussin Alali, Jiang Wen Ming, Nor Fazila Abd Malek, Mohd Hafizuddin Baki, Nur Ikhwan Mohamad","doi":"10.55860/frvg6056","DOIUrl":"https://doi.org/10.55860/frvg6056","url":null,"abstract":"There are some opinions that say the hand grip strength test can be a good predictor of the overall fitness of an individual. How correct is that? Thus, the main aim of this study is to investigate the relationship between hand grip strength test results with flexibility level as measured by the sit-and-reach test. For the purpose of this study 69 teenagers aged 18 to 23 years old mean ± SD = (19 ± 2.7), with body weight mean ± SD = (64.49 ± 13.47 Kg) and height mean ± SD (163.82 ± 8) have been recruited voluntarily. All participants performed two times hand grip test on their dominant hand, and the best performance was selected for further analysis. Participants then performed three trials of the sit-and-reach test with only the best performance recorded for analysis. The Pearson-correlation was used to analyse the data. Results indicated weak or no correlation between hand grip strength performance with sit-and-reach performance (r = 0.08, p > .01). It can be said that muscular strength performance measured by hand grip strength test may not be used to also indicate flexibility performance. Further studies are suggested to be performed on other age groups and other fitness components.","PeriodicalId":506764,"journal":{"name":"Scientific Journal of Sport and Performance","volume":"60 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140670734","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}

引用次数: 0