Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology最新文献_第7页

Novel tactical insights from Men’s 2022 FIFA World Cup: Which performance indicators explain the teams’ goal difference? 2022年男子国际足联世界杯的新战术见解：哪些表现指标可以解释球队的净胜球？

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-09-08 DOI: 10.1177/17543371231194291

G. Praça, Leandro Henrique Albuquerque Brandão, Cristóvão de Oliveira Abreu, Pedro Henrique de Almeida Oliveira, A. G. D. de Andrade

{"title":"Novel tactical insights from Men’s 2022 FIFA World Cup: Which performance indicators explain the teams’ goal difference?","authors":"G. Praça, Leandro Henrique Albuquerque Brandão, Cristóvão de Oliveira Abreu, Pedro Henrique de Almeida Oliveira, A. G. D. de Andrade","doi":"10.1177/17543371231194291","DOIUrl":"https://doi.org/10.1177/17543371231194291","url":null,"abstract":"This study examined positional and event-based tactical variables during the Men’s 2022 FIFA World Cup to detect differences between winning and losing teams and to verify which variables would better predict the goal difference between the teams. All 64 matches played during the competition were initially considered. Due to the purpose of the current article, draw matches were excluded from the sample. The data were compared between the match statuses using a MANOVA. A stepwise multiple linear regression was used to detect which variables predict the outcome of the matches. Results indicated differences between winning and losing in Line Breaks per Pass ( p = 0.011), Defensive Line Break per Pass ( p = 0.004), Final Third Phase Height ( p = 0.023), and Width ( p < 0.001). The best predictors of the goal difference were the Final Third Phase Width (standardized beta = −0.389), the Completed Line Breaks (standardized beta = 0.716), and the movements to receive in the progression phase in between (standardized beta = −0.491). It is concluded that positioning the team closer to the central corridor in the last third of the pitch and successfully breaking the defensive lines increases winning probability during the competition.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45373414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-exercise-based racing time prediction of cross-country skiers using machine learning methods combined with Relief-F feature selection 基于机器学习与Relief-F特征选择相结合的越野滑雪运动员非运动比赛时间预测

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-09-02 DOI: 10.1177/17543371231194011

F. Abut, MF Akay, S. Daneshvar, A. Özcan, D. Heil

{"title":"Non-exercise-based racing time prediction of cross-country skiers using machine learning methods combined with Relief-F feature selection","authors":"F. Abut, MF Akay, S. Daneshvar, A. Özcan, D. Heil","doi":"10.1177/17543371231194011","DOIUrl":"https://doi.org/10.1177/17543371231194011","url":null,"abstract":"This study proposes new non-exercise models for estimating the racing time of cross-country skiers. Machine learning methods employed to build the prediction models include General Regression Neural Network (GRNN), Support Vector Machine (SVM), Multilayer Feed-Forward Artificial Neural Network (MFANN), and Radial Basis Function Neural Network (RBFNN), whereas the Relief-F algorithm combined with a ranker search has been utilized as the feature selector. The self-created data set contains samples collected from 370 cross-country skiers with inhomogeneous capabilities. Each sample in the data set contains physiological variables such as sex, age, height, weight, and body mass index (BMI) combined with an immersive set of survey data. The outcomes suggest that generally, the GRNN-based models exhibit the best prediction performance and can be used as a feasible tool for the prediction of the racing time of cross-country skiers with tolerable root mean square errors (RMSEs). It is seen that inclusion of age and assigned starting wave of cross-country skiers in models leads to much lower RMSEs, suggesting that the racing time of cross-country skiers is highly correlated to these two predictor variables. When compared with the exercise-based models, the proposed non-exercise-based models produce consistently comparable prediction performance for all evaluated machine learning methods. The non-exercise-based models have the relevant benefit of practical feasibility, as the models do not require the skiers to complete physical exercises and are also applicable to a wide range of cross-country skiers.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48699440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the influence of head kinematics on head injury metrics and factors to consider for football helmet design 研究头部运动学对头部损伤指标的影响以及足球头盔设计应考虑的因素

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-30 DOI: 10.1177/17543371231194669

L. S. Chatham, Trevor S. Young, Richard M Wojcik, Lyssa A Bell, A. Torbati, R. Carpenter, Peter E. Jenkins, S. Poddar, C. M. Yakacki

{"title":"Investigating the influence of head kinematics on head injury metrics and factors to consider for football helmet design","authors":"L. S. Chatham, Trevor S. Young, Richard M Wojcik, Lyssa A Bell, A. Torbati, R. Carpenter, Peter E. Jenkins, S. Poddar, C. M. Yakacki","doi":"10.1177/17543371231194669","DOIUrl":"https://doi.org/10.1177/17543371231194669","url":null,"abstract":"There is a need to understand the relationship between head kinematics, impact severity metrics, and overall helmet performance as sports-related concussions continue to be prevalent. This study evaluates these relationships, emphasizing newly developed severity metrics that consider both translational and rotational contributions. Impact tests were performed following the NFL testing protocol on four prominent football helmets. The resulting data was used to determine Head Acceleration Response Metric (HARM), Diffuse Axonal Multi-Axis General Evaluation (DAMAGE), and Head Injury Criterion (HIC). HARM scores, a combination of HIC and DAMAGE, were ultimately used to solve for a Helmet Performance Score. When analyzing all impacts, DAMAGE showed a stronger correlation to HARM than HIC ( R2 = 0.76 vs R2 = 0.57); however, the strongest correlation existed between peak resultant angular velocity (PRAV) and HARM ( R2 = 0.87). When examining impacts at only the side, side upper (SU), and oblique front (OF) locations grouped together, HIC demonstrated the strongest correlation to HARM in the study ( R2 = 0.96). PRAV was the best predictor for HARM over peak resultant linear acceleration (PRLA) and peak resultant angular acceleration for four of the six impact locations (C, D, FMCO, and FMS) when analyzing the sites individually. The remaining locations (SU and OF) best predicted HARM using PRLA. These results are presented and discussed to aid in the research, design, and development of football helmets.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47657079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Do contextual factors influence running and accelerometry GPS based variables in professional women soccer players? A case study about the effect of match location and result 背景因素是否影响职业女子足球运动员跑步和加速度测量GPS变量?关于匹配位置和结果影响的案例研究

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-16 DOI: 10.1177/17543371231194004

Rafael Oliveira, H. Ceylan, Renato Fernandes, R. Morgans, H. Nobari, Matilde Nalha, J. Brito

{"title":"Do contextual factors influence running and accelerometry GPS based variables in professional women soccer players? A case study about the effect of match location and result","authors":"Rafael Oliveira, H. Ceylan, Renato Fernandes, R. Morgans, H. Nobari, Matilde Nalha, J. Brito","doi":"10.1177/17543371231194004","DOIUrl":"https://doi.org/10.1177/17543371231194004","url":null,"abstract":"The aims of this study were to compare external match load between home and away matches as well as the result of the match (win, draw, and loss). The secondary aim was to quantify external training load that preceded the next match taking into account both match location and result. Ten elite women soccer players participated in the study (age 24.6 ± 2.3 years). Seven home and seven away matches in which four wins, three draws, and seven losses occurred. The following global positioning system (GPS) metrics were analyzed: duration, total distance, high-speed running distance (HSR, ≥15 km h−1), number of accelerations (ACC) and decelerations (DEC), average speed, and player load. There were no significant differences between match results and match locations. Regarding comparisons of training data preceding different match results, only duration and player load did not differ while HSR, number of ACC and DEC showed to be higher when the next match was a loss ( p < 0.05, moderate to very large effect). Regarding comparisons of training data preceding different match locations, only duration, total distance, and player load did not differ while HSR, average speed, number of ACC and DEC in all zones were higher when the next match was at home ( p < 0.05, moderate to very large effect). In conclusion, this study showed that match result and location did not have a significant effect on GPS metrics exhibited during match-day. However, training data influenced the contextual factors of the next match which should be considered when planning training sessions.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48635728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transportation sand leakage and turf performance of sand-based removable modular turf as affected by the combined action of coir fiber and polyacrylamide 椰纤维和聚丙烯酰胺复合作用对砂基可移动模块化草坪输沙渗漏和草坪性能的影响

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-16 DOI: 10.1177/17543371231193268

Yufeng Chen, Zhang Peng, Liebao Han, Yongqiang Qian, Guilong Song, Xiaohui Yang

{"title":"Transportation sand leakage and turf performance of sand-based removable modular turf as affected by the combined action of coir fiber and polyacrylamide","authors":"Yufeng Chen, Zhang Peng, Liebao Han, Yongqiang Qian, Guilong Song, Xiaohui Yang","doi":"10.1177/17543371231193268","DOIUrl":"https://doi.org/10.1177/17543371231193268","url":null,"abstract":"Removable modular turf with a sand-based rootzone is a solution for high-end stadiums which can organize various events on the turf. However, the low stability of sand leads to serious sand leakage during the transportation of modular turf, which reduces the evenness and safety of the turf. Previous studies have shown that adding coir fibers (CF) and polyacrylamide (PAM) will improve soil stability. In this study, we evaluated the combined effects of CF and different amounts of PAM on soil properties, turfgrass growth, shear strength, and sand leakage during simulated transport vibrations in a sand-based modular turf planted with tall fescue ( Festuca elata Keng ex E. Alexeev). Each treatment comprised a mixture of 0.4% (weight material/weight soil) CF and six concentrations of PAM (0%, 0.025%, 0.050%, 0.075%, 0.100%, 0.125%, w/w) in the sand-based rootzone, with no addition of CF or PAM as the control. The results show that, in the sand-based rootzone, CF could improve tall fescue growth, shear strength, and resistance to sand leakage owing to transport vibration due to the physical properties of the coir fiber. However, the combined effect of CF and 0.100% PAM was better for tall fescue growth, shear strength, and resistance to sand leakage. However, owing to the lubricating effect of PAM, adding a low (≤0.025%) or a high rate (≥0.125%) amount of PAM would reduce the effect of CF and PAM. Therefore, the combined effect of CF + 0.100% PAM in this study had the best effect on the turf module and can be used as an application scheme for the removable modular turf.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44069477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consequences of field obstacles on tactical, conditional, and emotional dimensions in young female soccer players during small-sided games 小面比赛中场地障碍对年轻女子足球运动员战术、条件和情感维度的影响

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-09 DOI: 10.1177/17543371231191845

A. Los Arcos, Asier Gonzalez-Artetxe, Uxue Bayer-Perez, H. Folgado

{"title":"Consequences of field obstacles on tactical, conditional, and emotional dimensions in young female soccer players during small-sided games","authors":"A. Los Arcos, Asier Gonzalez-Artetxe, Uxue Bayer-Perez, H. Folgado","doi":"10.1177/17543371231191845","DOIUrl":"https://doi.org/10.1177/17543371231191845","url":null,"abstract":"This study aims to compare tactical, conditional, and emotional responses of young female soccer players with two small-sided games (SSG) conditions – with and without field obstacles. Twelve Spanish under-12 female soccer players (age: 12.5 ± 0.7 years) played two different 6-a-side SSGs (i.e. 5 vs 5 plus goalkeepers): one with field obstacles (SSGobstacles) and the other without these (SSGfree). Positional data were gathered using a GPS to measure tactical (distance between players, stretch-index [SI], spatial exploration index [SEI] and their normalized approximate entropy measures [ApEn norm], and longitudinal and lateral synchronizations) and conditional performances (total and walking, jogging, running, and high-speed running distances). Participants assessed the intensity of their emotional experience using the BECS scale of perceived enjoyment and competence. SSGobstacles reduced the SEI values ( p = 0.038, Cohen’s d = −0.40 [−0.77; −0.02]), impaired lateral synchronization ( p < 0.001, d = −0.62 [−0.89; −0.34]), and increased regularity (distance between playersApEn norm: p = 0.016, d = −0.32 [−0.58; −0.06]; SIApEn norm: p = 0.029, d = −0.42 [−0.79; −0.04]) of the tactical behavior in comparison to SSGfree. Players traveled more distance overall ( p = 0.009, d = 0.51 [0.13; 0.89]) and while running ( p = 0.028, d = 0.42 [0.04; 0.79]) during SSGobstacles in comparison to SSGfree. No significant differences between the two SSG conditions were apparent in players’ perceived enjoyment ( p = 0.060) and competence levels ( p = 0.530). Placing obstacles on the field during SSGs, compared with those free of obstructions, could decrease young female soccer players’ spatial exploration, stabilize their tactical behavior, and raise their physical effort.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43481752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aerodynamic drag study of speed skaters using CFD simulations 基于CFD模拟的速度滑冰运动员气动阻力研究

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-05 DOI: 10.1177/17543371231188558

Yuju Wei, Yan-Qun Wang, You Nie, Ding Weng, Lei Chen, Yuan Ma, Zuobo Pang, Jiadao Wang

{"title":"Aerodynamic drag study of speed skaters using CFD simulations","authors":"Yuju Wei, Yan-Qun Wang, You Nie, Ding Weng, Lei Chen, Yuan Ma, Zuobo Pang, Jiadao Wang","doi":"10.1177/17543371231188558","DOIUrl":"https://doi.org/10.1177/17543371231188558","url":null,"abstract":"The aerodynamic drag of speed skaters was analyzed numerically at different posture angles of head, back and arm as well as team formation. Computational Fluid Dynamics (CFD) method was used to investigate the optimized posture of the skater and the drag law of the team formation. Detached Eddy Simulation (DES) was used as the numerical technique. CFD results showed that the drag area of the skater increased with the increasing angle of the head, back, and arms due to the increased high-pressure areas on the windward side and the increased low-pressure areas on the leeward side of the skater. CFD results also showed that all three skaters had lower drag area in the team pursuit competition compared with an isolated skater. The drag area of the latter two skaters was significantly smaller than that of the first skater, and the drag area of the foremost skater increased sharply when the axial spacing was more than 0.6 m. The drag area for all three skaters increased as the lateral offset increased. Moreover, the research in this paper presented an important reference for the drag reducing optimization of speed suits and helmets, and the method could be expanded to other sports.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49647949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of prototypes in sport: A systematic review 体育运动中原型的发展:系统回顾

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-08-01 DOI: 10.1177/17543371231189920

J. C. G. da Silva, K. F. Silva, Carlos Eduardo Coelho Freire Batista, G. T. Patrício, G. Batista

{"title":"Development of prototypes in sport: A systematic review","authors":"J. C. G. da Silva, K. F. Silva, Carlos Eduardo Coelho Freire Batista, G. T. Patrício, G. Batista","doi":"10.1177/17543371231189920","DOIUrl":"https://doi.org/10.1177/17543371231189920","url":null,"abstract":"This study systematically reviewed the available scientific evidence pertaining to the different types of prototypes available, discussed their current use, and present and future applications in sports science. The electronic databases National Library of Medicine (PubMed), Web of Science™ and Scopus were searched from January 2016 to September 2021. Of the 750 articles identified, 714 articles were excluded based on title and abstract and/or for duplicates. Moreover, of the 36 articles selected, 11 articles (30.5%) were related to the development of prototypes for carrying out tactical-technical or physical performance analyzes of athletes in different sports, 22 articles (61.1%) were related to the creation of “equipment or clothing” prototypes used in sports activities and three articles (8.3%) were related to the creation of prototypes that aim to improve the technical performance of athletes. It was concluded that the development of prototypes in sport had a significant impact on the monitoring of athletes in the field of sport sciences. The prototypes provide coaches and technical professionals with the monitoring of physiological, tactical-technical, and physical parameters in real time during training and sports competitions. These parameters can be used for recognition of movement patterns and prevention of potential injuries, such as concussion and fatigue.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48328767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Validity of a wearable device for measuring vertical displacement and jump count in young artistic roller skating athletes 一种测量青少年艺术轮滑运动员垂直位移和跳数的可穿戴装置的有效性

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-07-21 DOI: 10.1177/17543371231188400

André Rebelo, D. Teixeira, J. Valente-dos-Santos, R. Lima

{"title":"Validity of a wearable device for measuring vertical displacement and jump count in young artistic roller skating athletes","authors":"André Rebelo, D. Teixeira, J. Valente-dos-Santos, R. Lima","doi":"10.1177/17543371231188400","DOIUrl":"https://doi.org/10.1177/17543371231188400","url":null,"abstract":"The present study aimed to investigate the validity of a small inertial sensor (Vert IMU) for measuring vertical displacement and jump count in young female artistic roller skating athletes. Two separate investigations were completed. In the first, 12 subjects were asked to perform 24 jumps each, and jump heights were simultaneously assessed by the Optojump photocells (criterion instrument) and by the Vert IMU and compared to evaluate concurrent validity of this latter system. The second investigation evaluated the capacity of the Vert to correctly identify jumps during training sessions. The correlation between the Vert device and the Optojump was strong for all jump types ( r = 0.84–0.95), except for the double Salchow which had a moderate correlation ( r = 0.55). All 288 jumps in Investigation One had a significant ( p < 0.001) mean bias of 9.96 cm with limits of agreement ranging from 1.58 to 18.34 cm. The results of Investigation Two indicate the Vert has excellent precision for all jump types analysed (0.968). In the elite group, recall was excellent for all jumps (0.900–1.000) besides the single Loop (0.364) and the single Thoren (0.444). However, in the sub-elite group, recall was excellent only in three jumps. The Vert device can offer a benefit in the sporting environment due to its capacity to provide near real time jumping data with limited resources. Some limitations regarding non-elite athletes may warrant some attention due to their lower vertical displacement ability and less-developed technical gestures in artistic jumping.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46359386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental characterization of artificial turf infill mixtures and implementation in smoothed particle hydrodynamics numerical model 人造草皮填充混合物的实验表征及其在光滑颗粒流体力学数值模型中的实现

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2023-07-13 DOI: 10.1177/17543371231186861

B. Watson, M. Bustamante, Aleksander Rycman, Matheus A Correia, D. Cronin

{"title":"Experimental characterization of artificial turf infill mixtures and implementation in smoothed particle hydrodynamics numerical model","authors":"B. Watson, M. Bustamante, Aleksander Rycman, Matheus A Correia, D. Cronin","doi":"10.1177/17543371231186861","DOIUrl":"https://doi.org/10.1177/17543371231186861","url":null,"abstract":"Quantifying the response of infill used to construct contemporary artificial turf is critical to the development of computational models and providing insights to reduce sports injury associated with artificial turf. In the current study, confined compression and direct shear tests were performed on typical infill materials (sand, SBR and two mixtures (33%: 67%) by-weight). The experimental tests exhibited a progression from high strength and stiffness (sand) to low strength and stiffness (SBR) with the mixtures having intermediate values. Increasing particle size, particularly sand, tended to increase the resistance of the infill to deformation. The experimental results were implemented into a soil constitutive material model and the experimental tests were simulated using a smoothed particle hydrodynamics (SPH) method to verify the implementation in a commercial explicit finite element solver. The SPH method successfully captured the initial loading up to yield, material flow and post-yield behavior, enabling large-scale particle flow that will be necessary to simulate artificial turf. The simulation results predicted the test force-displacement response well for SBR and mixture infills. The proposed methodology demonstrated the ability to measure properties of contemporary artificial turf infills in both compression and shear for pure sand, pure SBR and mixtures of the two, and use these properties to accurately represent the infill in a computational environment. The resulting model can be extended to large-scale turf models, to investigate athlete performance and injury risk when interacting with artificial turf.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46752496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1