Article
Instruments & Instrumentation
Zhengyong Duan, Dayong Tang, Qihang Zeng, Yingchun Peng
Summary: This study focuses on disclosing some key technologies that affect whether the velocity amplifier could achieve a high-g level shock experimental environment. Equations describing the first collision are deduced and some key design criteria are proposed. The key conditions for formation of the opposite collision are proposed for the second collision, which is the most important point, to obtain a high-g shock environment. A test platform was constructed, and experiments were conducted with different shock rods, pulse shapers, and initial velocities. The test results fully demonstrated the powerful ability of the single-level velocity amplifier for high-g shock experiments and tell us that a duralumin alloy or carbon fiber is suitable to design shock rods.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Sport Sciences
Jason C. Dorman, Daniel N. Poel, Verle D. Valentine, Thayne A. Munce
Summary: This study examined the head impact exposure of middle school football players over multiple seasons and found a significant reduction in head impacts. The most prominent decline occurred in practices, although head impacts in games also decreased.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Sport Sciences
Vincent Meintjes, Pip Forshaw, Steve den Hollander, Lindsay Starling, Michael Ian Lambert, Wayne Viljoen, Clint Readhead, Sharief Hendricks
Summary: Injured tacklers and ball-carriers demonstrated significantly lower technical proficiency during front-on tackles compared to their injury-free event-matched controls from the same player and team.
BRITISH JOURNAL OF SPORTS MEDICINE
(2021)
Article
Hospitality, Leisure, Sport & Tourism
Mariya A. Yukhymenko-Lescroart
Summary: The study found that the impact of sport clustering is more significant than team clustering in variation of sport conduct, with sex and invasion team sports explaining most of the sport-level differences. It is important to consider sport clustering, but controlling for sex is necessary at the very least when accounting for sport-level clustering is not feasible.
PSYCHOLOGY OF SPORT AND EXERCISE
(2021)
Article
Multidisciplinary Sciences
Efehan Ulas
Summary: The research investigated the factors affecting NBA team values, with significant determinants found to be revenue, GDP, championship, population, and key player, while the total number of turnovers was found to have a negative impact on team value. These findings can help coaches and managers improve their strategies to increase their teams' value.
Article
Nutrition & Dietetics
Daniel Baldo Vela, Noelia Bonfanti, Luis Antonio Villarino Marin
Summary: Men who practice team sports may also be a high-risk group for the development of eating disorders. A study found that about 20.36% of team sports players showed clinical features compatible with an eating disorder diagnosis. Being younger than 21 years, having a BMI larger than 25 kg/m(2), and perceiving high-level pressure from the coach and/or family were identified as risk factors for eating disorders in men who practice team sports.
FRONTIERS IN NUTRITION
(2022)
Article
Health Care Sciences & Services
Youngtaek Oh, Jung-In Yoo
Summary: This study compared individual and team sport athletes in sporting situations, exploring the relationship between transformational leadership, social norms, and team cohesion. The results showed that transformational leadership had a significant positive effect on social norms and team cohesion. Social norms also had a significant positive effect on team cohesion. Furthermore, the interaction between individual/team sports athletes and transformational leadership significantly influenced team cohesion, with individual sports athletes showing slightly higher cohesion. This study sheds light on the social norms and team cohesion of athletes, providing insights for young athletes and helping them understand the culture and sociology of sports.
Review
Nutrition & Dietetics
Mariana Sanchez Diaz, Adrian Martin-Castellanos, Valentin E. Fernandez-Elias, Olga Lopez Torres, Jorge Lorenzo Calvo
Summary: This review examines the impact of polyphenol consumption on muscle recovery in team sport athletes. It suggests that polyphenols may have a positive effect on recovery after exercise-induced muscle damage, but the certainty of these effects in both females and males remains moderate to very low. Further research, particularly in females, is needed to confirm these findings.
Article
Multidisciplinary Sciences
Rune Kjosen Talsnes, Guro Strom Solli, Jan Kocbach, Per-Oyvind Torvik, Oyvind Sandbakk
Summary: The study aimed to investigate the prediction of XC skiing and roller-skiing performance using laboratory and field-based tests. Findings suggest that both laboratory performance indices and field-based performance tests provide valid predictions of XC skiing and roller-skiing performance, with running tests showing stronger correlations with XC skiing performance.
Article
Sport Sciences
Travis Anderson, William M. Adams, Jessica D. Bartley, Angel L. Brutus, Amber T. Donaldson, Jonathan T. Finnoff
Summary: This study evaluated the effectiveness of the Athlete Psychological Strain Questionnaire (APSQ) in identifying athletes at risk for mental health concerns. The results showed a high false-negative rate for the APSQ, suggesting that athletes should complete not only the APSQ but also all subsequent questionnaires of the Sport Mental Health Assessment Tool 1 (SMHAT-1) as part of their evaluation.
BRITISH JOURNAL OF SPORTS MEDICINE
(2023)
Article
Computer Science, Software Engineering
Anqi Cao, Ji Lan, Xiao Xie, Hongyu Chen, Xiaolong Zhang, Hui Zhang, Yingcai Wu
Summary: This article proposes a visual analytics method for soccer lineup selection, integrating essential factors and providing a visualization system to support coaches in generating and comparing lineups. The effectiveness of the system is demonstrated through case studies on real-world soccer event data.
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
(2023)
Article
Multidisciplinary Sciences
Kaja Meh, Vedrana Sember, Maroje Soric, Henri Vaha-Ypya, Paulo Rocha, Gregor Jurak
Summary: This study confirms that the validity of physical activity questionnaires (PAQs) increases with participants' fitness levels. The results from IPAQ-SF and GPAQ show a significant trend of higher validity for moderate to vigorous physical activity from the low to high fitness groups. However, EHIS-PAQ demonstrates the best agreement with accelerometer data and has a high validity across all fitness groups.
Article
Computer Science, Information Systems
Vangelis Sarlis, Vasilis Chatziilias, Christos Tjortjis, Dimitris Mandalidis
Summary: This paper reviews the impact of injuries on player and team performance in the NBA from 2010 to 2020, finding a significant influence especially from musculoskeletal impairments. It provides valuable information for coaches, scientists, and managers to address injury issues and improve performance.
INFORMATION SYSTEMS
(2021)
Article
Computer Science, Information Systems
Vikas Khullar
Summary: This study analyzes the correlations between different parameters in the game of Kabaddi and predicts team and player performance using statistical machine learning methods. The suggested methodology includes feature extraction, correlation identification, and implementing appropriate machine learning approaches. The findings suggest that this method can be used to build regression models with high prediction accuracy.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Multidisciplinary Sciences
Supatcharin Kemarat, Apiluk Theanthong, Wichai Yeemin, Sutima Suwankan
Summary: The study found differences in competitive anxiety between individual and team athletes, as well as significant differences in competitive anxiety and agreeableness component of personality between genders. Certain personality traits were significantly associated with competitive anxiety, with neuroticism serving as a predictor for all collegiate athletes.
Article
Engineering, Biomedical
James C. A. Peacock, Kevin Ball
SPORTS BIOMECHANICS
(2019)
Article
Engineering, Biomedical
Victoria Brackley, Kevin Ball, Elaine Tor
SPORTS BIOMECHANICS
(2019)
Article
Sport Sciences
James Peacock, Kevin Ball
JOURNAL OF SPORTS SCIENCES
(2019)
Review
Sport Sciences
Emily E. Cust, Alice J. Sweeting, Kevin Ball, Sam Robertson
JOURNAL OF SPORTS SCIENCES
(2019)
Article
Physiology
Ramon F. Rodriguez, Nathan E. Townsend, Robert J. Aughey, Francois Billaut
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
(2019)
Article
Sport Sciences
Emily E. Cust, Alice J. Sweeting, Kevin Ball, Hamish Anderson, Sam Robertson
JOURNAL OF SCIENCE AND MEDICINE IN SPORT
(2019)
Article
Sport Sciences
Michele Lo, Robert J. Aughey, Andrew M. Stewart, Nicholas Gill, Brent McDonald
Summary: The study found two main strategies to reduce the impact of air travel on players' performance and well-being – clinical and holistic, while team culture and practices are seen as important factors.
JOURNAL OF SPORTS SCIENCES
(2021)
Article
Multidisciplinary Sciences
Ana C. Holt, Kevin Ball, Rodney Siegel, William G. Hopkins, Robert J. Aughey
Summary: The study investigated the relationships between boat acceleration and velocity in rowing, aiming to identify potential performance-enhancement strategies. Results showed that certain boat acceleration measures had significant effects before adjustment for stroke rate and power, but most effects reduced after adjustment, with some measures remaining significant in certain boat classes. These findings suggest that greater absolute values of certain acceleration measures are associated with improved performance in rowing, providing potential strategies for enhancing performance beyond increases in stroke rate and power output.
Review
Sport Sciences
Robert I. M. Delves, Robert J. Aughey, Kevin Ball, Grant M. Duthie
Summary: The review highlights the common use of GPS/GNSS technology in quantifying external acceleration load in team sport research, with count-based metrics being predominant. However, information regarding data processing and minimum effort duration is lacking in many studies, indicating a need for more detailed reporting in future research.
SPORTS MEDICINE-OPEN
(2021)
Article
Multidisciplinary Sciences
Michele Lo, Robert J. Aughey, William G. Hopkins, Nicholas Gill, Andrew M. Stewart
Summary: This study aimed to quantify the impact of matches and travel on the sleep, wellness, and training of Super Rugby players. The results showed that overseas matches led to reduced sleep and wellness levels, which recovered somewhat upon return. There were also differences between teams in the impact of matches on sleep and wellness.
Article
Sport Sciences
Robert J. Aughey, Kevin Ball, Sam J. Robertson, Grant M. Duthie, Fabio R. Serpiello, Nicolas Evans, Bartholomew Spencer, Susanne Ellens, Emily Cust, Jade Haycraft, Johsan Billingham
Summary: This study established the validity of VisionKit computer vision system against three-dimensional motion capture in a stadium environment. The results showed strong agreement between VisionKit and three-dimensional motion capture across each activity. Therefore, VisionKit can be used to establish the concurrent validity of other electronic performance and tracking systems in circumstances where three-dimensional motion capture cannot be used.
SPORTS ENGINEERING
(2022)
Article
Sport Sciences
Robert I. M. Delves, Grant M. Duthie, Kevin A. Ball, Robert J. Aughey
Summary: This study aimed to determine if there were differences in acceleration during team-sport locomotion between different GNSS manufacturers. Data from professional rugby league athletes wearing devices from two manufacturers (GPSports EVO and STATSports Apex) were analyzed. The study found no substantial differences in speed and filtered acceleration between manufacturers, but there were substantial differences in acceleration variables derived from the proprietary software of each manufacturer.
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Sport Sciences
Sam Gregory, Sam Robertson, Robert Aughey, Grant Duthie
Summary: This research adds context to a player's movement in football by analyzing the differences in movement metrics across phases of play and in-game win probabilities. The results demonstrate that there are differences in movement profiles across possession phases and in-game win probabilities, while overall positional trends are negligible.
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Sport Sciences
Robert I. M. Delves, Heidi R. Thornton, Joshua Hodges, Balin Cupples, Kevin Ball, Robert Aughey, Grant M. Duthie
Summary: The study examined the impact of the "six-again" rule change on athletes in the Australian National Rugby League. The analysis of GNSS data showed that the introduction of this rule led to a significant increase in acceleration for all positions and an overall higher average acceleration during matches. This suggests that the game of rugby league now requires athletes to have greater acceleration, and coaches should adjust their training programs accordingly.
SCIENCE AND MEDICINE IN FOOTBALL
(2023)
Review
Psychology, Multidisciplinary
Nathan Bonney, Jason Berry, Kevin Ball, Paul Larkin
FRONTIERS IN PSYCHOLOGY
(2019)