Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology最新文献_第3页

The concurrent validity and reliability of the My Jump Lab smartphone app for the real-time measurement of vertical jump performance 用于实时测量垂直跳跃成绩的 "我的跳跃实验室 "智能手机应用程序的并发有效性和可靠性

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-04-12 DOI: 10.1177/17543371241246439

Deniz Şentürk, Oğuzhan Yüksel, Zeki Akyildiz

{"title":"The concurrent validity and reliability of the My Jump Lab smartphone app for the real-time measurement of vertical jump performance","authors":"Deniz Şentürk, Oğuzhan Yüksel, Zeki Akyildiz","doi":"10.1177/17543371241246439","DOIUrl":"https://doi.org/10.1177/17543371241246439","url":null,"abstract":"The present study had two main objectives: (i) to assess the concurrent validity and agreement of real-time measurement of counter-movement jump (CMJ) height using the My Jump Lab (MJL) mobile application in comparison to a force plate and (ii) to evaluate the intra-session reliability and agreement of the force plate and the MJL application. This cross-sectional investigation involved 36 recreationally active, healthy men (mean age = 22.2 ± 2.9 years) who performed five CMJ repetitions on the force plate with a 2-min rest period. Their jump heights were concurrently recorded using both the force plate and the MJL application. The high validity between the two methods intraclass correlation coefficient >0.984) was observed for all cases. There was a nearly perfect correlation ( r = 0.968, p = 0.001, in all cases) between the force plate and MJL application, with very good agreement and a mean difference of 1.016 cm (95% confidence interval: −1.229 to −0.803 cm). High intra-session reliability was observed in the force platform (SEM, 0.42 cm; CV, 1.21%; MDC, 1.5; SWC, 1.12), and MJL (SEM, 0.43 cm; CV, 1.23%; MDC, 1.20; SWC, 1.17). The results demonstrate that the MJL application is a valid and reliable tool for measuring jump performance in real-time and assessing CMJ height.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"42 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140577925","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

Reliability and validity of the new portable Nordic hamstring test device (IVMES H-Bord) 新型便携式北欧腿筋测试装置（IVMES H-Bord）的可靠性和有效性

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-04-09 DOI: 10.1177/17543371241239725

Cengiz Akarçeşme, Elif Cengizel, Sümer Alvurdu, Emre Bağcı, Emre Altundağ, Çağdaş Özgür Cengizel, Ömer Şenel

{"title":"Reliability and validity of the new portable Nordic hamstring test device (IVMES H-Bord)","authors":"Cengiz Akarçeşme, Elif Cengizel, Sümer Alvurdu, Emre Bağcı, Emre Altundağ, Çağdaş Özgür Cengizel, Ömer Şenel","doi":"10.1177/17543371241239725","DOIUrl":"https://doi.org/10.1177/17543371241239725","url":null,"abstract":"The aim of this study is to determine the reliability and validity of the IVMES H-Bord eccentric hamstring strength measurement device. Thirty-eight healthy male athletes (age: 20.9 ± 2.11 years, height: 1.79 ± 0.03 m, body weight: 76.6 kg, body mass index: 22.6 ± 0.69 kg/m2) participated in this study. Each test protocol was applied in eccentric mode and isometric mode respectively. Between-session test-retest reliability of the IVMES H-Bord was analyzed for the intraclass correlation coefficient (ICC) with 95% coefficient intervals (CI). Validity of the IVMES H-Bord was examined for eccentric mode (NHTecc), and isometric mode (NHTiso) using Pearson’s correlation coefficient with 95% CI and limits of agreement. Bland-Altman plots were also created to provide a representation of the agreement between two test devices. Strong correlations, good ICC values and acceptable typical errors of the estimate were observed between the NHT and isokinetic strength testing (IST) during both limbs with no proportional bias for validity analysis. In conclusion, the “IVMES H-Bord” is a reliable and valid measurement device for eccentric hamstring muscle strength and it provides important advantages for medical staff, fitness coaches and practitioners because it is portable, low cost, and field-based assessment.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"263 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140578148","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

Meta-analysis of the effects of VAR on goals scored and home advantage in football VAR 对足球进球数和主场优势影响的元分析

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-04-09 DOI: 10.1177/17543371241242914

Mike Rogerson, Daniel Knight, Reinhold Scherer, Ben Jones, Chris McManus, Sally Waterworth, Kelly Murray, Ed Hope

{"title":"Meta-analysis of the effects of VAR on goals scored and home advantage in football","authors":"Mike Rogerson, Daniel Knight, Reinhold Scherer, Ben Jones, Chris McManus, Sally Waterworth, Kelly Murray, Ed Hope","doi":"10.1177/17543371241242914","DOIUrl":"https://doi.org/10.1177/17543371241242914","url":null,"abstract":"Video assistant referee (VAR) has been introduced to elite football (soccer) to avoid clear and obvious mistakes, especially for goal scoring situations. Some literature has reported on VAR’s impact on the game across particular league competitions. The current study meta-analysed data across two seasons (pre-VAR and post-VAR) from 20 competitions ( n = 9076 matches; men’s domestic leagues and both men’s and women’s international tournaments) to examine the overall impact that VAR initially had on number of goals scored, and the extent of inter-competition heterogeneity. A secondary aim was to determine any VAR-associated reduction in home advantage for goals scored, mean result direction and match closeness. Findings demonstrated that there were no overall statistically significant nor meaningful differences between pre and post-VAR seasons/competitions for total number of goals scored per match. Similarly, there were no VAR-associated reductions in home advantage in terms of goals scored, mean result direction and closeness of match outcome. There was moderate heterogeneity for some comparisons, and VAR lessened inter-competition variance for number of goals scored and match score closeness. Implications of findings are discussed. As the largest VAR-focused study and the first to use meta-analytic approach, the current findings are the most comprehensive and definitive to date.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"4 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140577919","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

The influence of seam orientation on the lift and drag of a rotating baseball in flight 接缝方向对飞行中旋转棒球的升力和阻力的影响

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-04-06 DOI: 10.1177/17543371241241846

Joseph Seydel

引用次数: 0

Improving diet through a recommendation system using physical activity data and healthy diet indexes of female futsal players 利用女子五人制足球运动员的体育活动数据和健康饮食指数，通过推荐系统改善饮食结构

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-04-06 DOI: 10.1177/17543371241241847

Iñigo Orue-Saiz, Markel Rico-González, José Pino-Ortega, Amaia Méndez-Zorrilla

{"title":"Improving diet through a recommendation system using physical activity data and healthy diet indexes of female futsal players","authors":"Iñigo Orue-Saiz, Markel Rico-González, José Pino-Ortega, Amaia Méndez-Zorrilla","doi":"10.1177/17543371241241847","DOIUrl":"https://doi.org/10.1177/17543371241241847","url":null,"abstract":"Sports data analysis can revolutionize how coaches and athletes train, leading to enhanced skills and improved team outcomes by providing valuable insights into performance metrics, enabling personalized training programs, and fostering a data-driven approach to decision-making. Sports data analysis has evolved in tandem with the increasing availability of data and the widespread adoption of data-driven practices in sports. Futsal stands out as one of the most challenging team sports to analyze, particularly in the case of female futsal, which has received limited research attention. The high-paced nature of the game, the smaller playing area, and the emphasis on close ball control necessitate a specialized approach to data collection and analysis. This situation presents a significant opportunity for in-depth exploration. By recognizing a gap in utilizing nutrition and physical activity data for female futsal players, researchers embarked on the journey to design and develop a recommendation system based on diet and training data. The study enlisted 14 talented female futsal players, and data was collected using an advanced LPS (Local Positioning System) device. Despite having limited player information, researchers successfully addressed the well-known “cold start” challenge. They created a content-based filtering recommendation system that accurately predicts the caloric expenditure of futsal players, achieving an impressive determination coefficient of 0.94. This innovative system has the potential to revolutionize the training methods of female futsal players, paving the way for advancements in sports data analysis and opportunities to enhance the visibility of women’s futsal on a broader stage.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"41 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140577697","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

A laboratory method to measure deformation of baseball infield soil surfaces using cleated footwear 使用夹板鞋测量棒球内场土壤表面变形的实验室方法

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-03-28 DOI: 10.1177/17543371241237588

Evan Christopher Mascitti, Andrew Scott McNitt

{"title":"A laboratory method to measure deformation of baseball infield soil surfaces using cleated footwear","authors":"Evan Christopher Mascitti, Andrew Scott McNitt","doi":"10.1177/17543371241237588","DOIUrl":"https://doi.org/10.1177/17543371241237588","url":null,"abstract":"Baseball and softball are played primarily on the infield skin. An ideal infield surface allows players’ cleats to penetrate the soil and provide adequate traction yet impart minimal surface disruption. This ideal state has been termed the “cleat-in/cleat-out effect.” As an infield soil dries, it transitions from the cleat-in/cleat-out state to a brittle condition in which the soil readily fractures into chips or clods. . Surface irregularities formed in the brittle condition may deflect batted balls and induce a fielding error or injury. The objective of this research was to develop a laboratory test for identifying the critical water content [Formula: see text] corresponding to the cleat-in/cleat-out behavioral threshold for any soil. A pneumatically driven apparatus was fabricated to emulate an athlete’s footstrike by applying normal, shearing, and torsional stresses using baseball cleats removed from a commercially available shoe. The test produced several cleat indentations on a cylindrical soil sample. A 3D scanning technique quantified surface disruption via Dirichlet Normal Energy. Volumetric water content was measured using a combination of 3D scanning and gravimetric methods. A given soil sample was tested at several water contents. [Formula: see text] was determined by plotting Dirichlet Normal Energy against θ and fitting a curve to solve for the local minimum. The method successfully detected differences in [Formula: see text] between infield soils containing identical clay mineralogy but differing sand content (60% and 75%; p < 0.001). Reasonable correspondence was achieved across test replicates, with a coefficient of variation of 8.5%. It is envisaged that the method will find utility in future investigations of infield mix design.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"9 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140324284","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

Comparison of collision dynamics of soccer balls with energy dissipation method 用能量耗散法比较足球的碰撞动力学

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-03-26 DOI: 10.1177/17543371241237589

Asım Tunçel, Nihat Özgören, Serdar Aritan

{"title":"Comparison of collision dynamics of soccer balls with energy dissipation method","authors":"Asım Tunçel, Nihat Özgören, Serdar Aritan","doi":"10.1177/17543371241237589","DOIUrl":"https://doi.org/10.1177/17543371241237589","url":null,"abstract":"This study aimed to understand the collision characteristics of different soccer balls by determining energy dissipation (ED) during collisions. Soccer balls from five different brands were kicked towards a framed tempered glass. The kicks were performed with the balls inflated under three inner pressure conditions. The motion of each ball was recorded using two high-speed cameras at 6000 Hz. The contact surface area (CSA), ball indentation amount (IA), reaction forces (RF) and energetic coefficient of restitution (CoR) during contact were calculated via image processing methods. A new methodological approach was developed to determine the ED during the collision (EDDC). The accuracy of the estimated RF was validated using force plate data, and the CSA values validated the calculated IA. The EDDC were then reduced to a single value to compare with the CoR values obtained using the traditional formula. Differences between CoR and EDDC were statistically tested. One-way ANOVA tests were performed separately to compare the effect of the ball brand on the IA and EDDC for each inner pressure condition. The CoR and EDDC showed no significant difference, proving that the developed method is a valid measure of ED. At 1.0 bar inner pressure, IA and EDDC showed significant differences according to the brands. EDDC, depending on the ball quality, decreased at higher inner pressure values regardless of the brand. Consequently, the present study exhibited that ball quality becomes a critical factor in collision dynamics at high inner pressure values, considering that ball inner pressure may vary between 0.6 and 1.0 bar in official soccer matches.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"128 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311412","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

Hydrodynamic performance of windsurfing boards with bottom modifications at high speed in calm water 风帆冲浪板底部改装后在平静水域高速运动时的水动力性能

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-03-22 DOI: 10.1177/17543371241240627

Konstantin I Matveev

{"title":"Hydrodynamic performance of windsurfing boards with bottom modifications at high speed in calm water","authors":"Konstantin I Matveev","doi":"10.1177/17543371241240627","DOIUrl":"https://doi.org/10.1177/17543371241240627","url":null,"abstract":"Hydrodynamic performance of windsurfing boards is greatly affected by geometrical details of their bottom surfaces. In this study, computational fluid dynamics is applied to simulate flow around boards with several bottom modifications, including deadrise, rocker, step, wedge, and wing-tail profile. These simulations are conducted in steady-state, calm-water regimes at high planing speeds. It is found that at similar board trim angles and vertical positions, the largest lift is produced by setups with the bottom wedge and the wing-tail profile that enhance the downward deflection of the incident water flow. The highest lift-drag ratio is achieved by the variants with the bottom step and wedge that enable partial air ventilation of the bottom surface, which leads to reduced wetted surface and lower frictional resistance. The center of lift is located more forward on the rocker and stepped configurations, while it is positioned more rearward for the wedge and wing-tail setups. The obtained results can be used for guiding board designs aimed at maximizing the board hydrodynamic performance in calm water.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"26 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203165","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

Evolution of sport wearable global navigation satellite systems’ receivers: A look at the Garmin Forerunner series 运动型可穿戴全球卫星导航系统接收器的演变：看看 Garmin 先行者系列

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-03-21 DOI: 10.1177/17543371241237319

Tomasz Szot

引用次数: 0

Multi-sensor fusion based optimized deep convolutional neural network for boxing punch activity recognition 基于多传感器融合的优化深度卷积神经网络用于拳击活动识别

IF 1.5 4区医学

Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology Pub Date : 2024-03-14 DOI: 10.1177/17543371241237085

Brindha Jayakumar, Nallavan Govindarajan

{"title":"Multi-sensor fusion based optimized deep convolutional neural network for boxing punch activity recognition","authors":"Brindha Jayakumar, Nallavan Govindarajan","doi":"10.1177/17543371241237085","DOIUrl":"https://doi.org/10.1177/17543371241237085","url":null,"abstract":"Recent advancements in deep learning have significantly enhanced the recognition of player activities in sports by enabling automatic feature extraction. In our proposed work, we focus on recognizing six distinct punches in the context of boxing. We incorporate the sliding window technique during the pre-processing stage to transform the time-series data obtained from Inertial Measurement Unit (IMU) sensors in a boxing punch activity recognition system. Our approach influences a sensor fusion-based Deep Convolutional Neural Network (DCNN) classification model to identify various boxing punches accurately, achieving an impressive F1 score. The system demonstrates proficiency in distinguishing similar activities, such as jab and hook punches where the existing systems made misclassifications due to subtle variations in arm flexion that differentiate the two. Through experimentation, we identify an optimal window size for boxing punch activity recognition, which falls within the range of 15–20 frames (equivalent to 0.15–0.25 s). This window size selection results in a notable reduction in inference time. To evaluate our proposed model, we conduct comparisons with a standard DCNN and an optimized DCNN model. Our proposed optimized DCNN model demonstrates enhanced recognition accuracy, achieving an impressive 99%, coupled with an improved F1 score of 87%. Furthermore, the model displays a remarkable reduction in inference time, clocking in at less than 1 ms. Overall, our research contributes to the field of sports-related player activity recognition by employing the power of deep learning. By expertly combining these techniques, we achieve remarkable accuracy, precision, and efficiency in recognizing various boxing punches.","PeriodicalId":20674,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology","volume":"27 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140152243","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