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Monteiro RLM, Dos Santos CCA, Blauberger P, Link D, Russomanno TG, Tahara AK, Chinaglia AG, Santiago PRP. Enhancing soccer goalkeepers penalty dive kinematics with instructional video and laterality insights in field conditions. Sci Rep 2024; 14:10225. [PMID: 38702374 PMCID: PMC11068781 DOI: 10.1038/s41598-024-60074-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 04/18/2024] [Indexed: 05/06/2024] Open
Abstract
This study aimed to analyze the effect of laterality and instructional video on the soccer goalkeepers' dive kinematics in penalty. Eight goalkeepers from youth categories (U15, U17, U20) were randomly divided into control (CG) and video instruction groups (VG). The latter performed 20 penalty defense trials on the field with balls launched by a machine, ten before and after watching a video instruction to improve the diving kinematics. The CG only performed the dives. Three cameras recorded the collections. A markerless motion capture technique (OpenPose) was used for identification and tracking of joints and anatomical references on video. The pose data were used for 3D reconstruction. In the post-instruction situation, the VG presented differences in comparison to the CG in the: knee flexion/extension angle, time to reach peak resultant velocity, frontal step distance, and frontal departure angle, which generated greater acceleration during the dive. Non-dominant leg side dives had higher resultant velocity during 88.4 - 100% of the diving cycle, different knee flexion/extension angle, and higher values in the frontal step distance. The instructional video generated an acute change in the diving movement pattern of young goalkeepers when comparing the control and the video instruction group in the post condition.
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Affiliation(s)
- Rafael Luiz Martins Monteiro
- Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP, 14049-900, Brazil.
| | | | - Patrick Blauberger
- Chair of Performance Analysis and Sports Informatics, Technical University of Munich, 80992, Munich, Germany
| | - Daniel Link
- Chair of Performance Analysis and Sports Informatics, Technical University of Munich, 80992, Munich, Germany
| | - Tiago Guedes Russomanno
- Chair of Performance Analysis and Sports Informatics, Technical University of Munich, 80992, Munich, Germany
| | - Ariany Klein Tahara
- Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP, 14049-900, Brazil
| | - Abel Gonçalves Chinaglia
- Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP, 14049-900, Brazil
| | - Paulo Roberto Pereira Santiago
- Biomechanics and Motor Control Laboratory, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP, 14049-900, Brazil
- School of Physical Education and Sports of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 14040-907, Brazil
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Palucci Vieira LH. Holistic approach to testing ball kicking mechanics and outcome metrics in soccer: methodological aspects, observation and intervention (PhD Academy Award). Br J Sports Med 2024; 58:345-347. [PMID: 38182273 DOI: 10.1136/bjsports-2023-107819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2023] [Indexed: 01/07/2024]
Affiliation(s)
- Luiz Henrique Palucci Vieira
- Facultad de Ingeniería y Arquitectura, Escuela Profesional de Ingeniería Industrial, Grupo de investigación en Tecnología aplicada a Seguridad ocupacional, Desempeño y Calidad de vida (GiTaSyC), Universidad César Vallejo (UCV), Campus Callao, Lima, Peru
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Zhang L, Zhao L, Yan Y. A hybrid neural network-based intelligent body posture estimation system in sports scenes. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2024; 21:1017-1037. [PMID: 38303452 DOI: 10.3934/mbe.2024042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Body posture estimation has been a hot branch in the field of computer vision. This work focuses on one of its typical applications: recognition of various body postures in sports scenes. Existing technical methods were mostly established on the basis of convolution neural network (CNN) structures, due to their strong visual information sensing ability. However, sports scenes are highly dynamic, and many valuable contextual features can be extracted from multimedia frame sequences. To handle the current challenge, this paper proposes a hybrid neural network-based intelligent body posture estimation system for sports scenes. Specifically, a CNN unit and a long short-term memory (LSTM) unit are employed as the backbone network in order to extract key-point information and temporal information from video frames, respectively. Then, a semi-supervised learning-based computing framework is developed to output estimation results. It can make training procedures using limited labeled samples. Finally, through extensive experiments, it is proved that the proposed body posture estimation method in this paper can achieve proper estimation effect in real-world frame samples of sports scenes.
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Affiliation(s)
- Liguo Zhang
- School of Physical Education, Shandong University, Jinan 250000, China
| | - Liangyu Zhao
- School of Physical Education, Shandong University, Jinan 250000, China
| | - Yongtao Yan
- Department of Physical Education, Shenzhen Polytechnic, Shenzhen 518055, China
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Palucci Vieira LH, Carling C, Kalva-Filho CA, Santinelli FB, Velluto LAG, da Silva JP, Clemente FM, Kellis E, Barbieri FA. Recovery of kicking kinematics and performance following repeated high-intensity running bouts in the heat: Can a rapid local cooling intervention help young soccer players? J Sports Sci 2023:1-11. [PMID: 37279300 DOI: 10.1080/02640414.2023.2220194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 05/24/2023] [Indexed: 06/08/2023]
Abstract
The effects of a cooling strategy following repeated high-intensity running (RHIR) on soccer kicking performance in a hot environment (>30ºC) were investigated in youth soccer players. Fifteen academy under-17 players participated. In Experiment 1, players completed an all-out RHIR protocol (10×30 m, with 30s intervals). In Experiment 2 (cross-over design), participants performed this running protocol under two conditions: (1) following RHIR 5 minutes of cooling where ice packs were applied to the quadriceps/hamstrings, (2) a control condition involving passive resting. Perceptual measures [ratings of perceived exertion (RPE), pain and recovery], thigh temperature and kick-derived video three-dimensional kinematics (lower limb) and performance (ball speed and two-dimensional placement indices) were collected at baseline, post-exercise and intervention. In Experiment 1, RHIR led to small-to-large impairments (p < 0.03;d = -0.42--1.83) across perceptual, kinematic and performance measures. In experiment 2, RPE (p < 0.01; Kendall's W = 0.30) and mean radial error (p = 0.057; η2 = 0.234) increased only post-control. Significant small declines in ball speed were also observed post-control (p < 0.05; d = 0.35). Post-intervention foot centre-of-mass velocity was moderately faster in the cooling compared to control condition (p = 0.04; d = 0.60). In youth soccer players, a short cooling period was beneficial in counteracting declines in kicking performance, in particular ball placement, following intense running activity in the heat.
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Affiliation(s)
- Luiz H Palucci Vieira
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
| | - Christopher Carling
- FFF Research Centre, French Football Federation, Clairefontaine National Football Centre, Clairefontaine-En-Yvelines, France
- Laboratory Sport, Expertise and Performance (EA 7370), French Institute of Sport (INSEP), Paris, France
| | - Carlos A Kalva-Filho
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
| | - Felipe B Santinelli
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
| | - Lorenzo A G Velluto
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
| | - João Pedro da Silva
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
| | - Filipe M Clemente
- Escola Superior Desporto E Lazer, Instituto Politécnico de Viana Do Castelo, Rua Escola Industrial E Comercial de Nun'álvares, Viana Do Castelo, Portugal
| | - Eleftherios Kellis
- Laboratory of Neuromechanics, Department of Physical Education and Sports Sciences of Serres, Aristotle University of Thessaloniki, Serres, Greece
| | - Fabio A Barbieri
- Human Movement Research Laboratory (MOVI-LAB), Faculty of Sciences, Graduate Program in Movement Sciences, Physical Education Dept, São Paulo State University (Unesp), Bauru, Brazil
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Baca A, Dabnichki P, Hu CW, Kornfeind P, Exel J. Ubiquitous Computing in Sports and Physical Activity-Recent Trends and Developments. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22218370. [PMID: 36366068 PMCID: PMC9659168 DOI: 10.3390/s22218370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 05/27/2023]
Abstract
The use of small, interconnected and intelligent tools within the broad framework of pervasive computing for analysis and assessments in sport and physical activity is not a trend in itself but defines a way for information to be handled, processed and utilised: everywhere, at any time. The demand for objective data to support decision making prompted the adoption of wearables that evolve to fulfil the aims of assessing athletes and practitioners as closely as possible with their performance environments. In the present paper, we mention and discuss the advancements in ubiquitous computing in sports and physical activity in the past 5 years. Thus, recent developments in wearable sensors, cloud computing and artificial intelligence tools have been the pillars for a major change in the ways sport-related analyses are performed. The focus of our analysis is wearable technology, computer vision solutions for markerless tracking and their major contribution to the process of acquiring more representative data from uninhibited actions in realistic ecological conditions. We selected relevant literature on the applications of such approaches in various areas of sports and physical activity while outlining some limitations of the present-day data acquisition and data processing practices and the resulting sensors' functionalities, as well as the limitations to the data-driven informed decision making in the current technological and scientific framework. Finally, we hypothesise that a continuous merger of measurement, processing and analysis will lead to the development of more reliable models utilising the advantages of open computing and unrestricted data access and allow for the development of personalised-medicine-type approaches to sport training and performance.
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Affiliation(s)
- Arnold Baca
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
| | - Peter Dabnichki
- STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | - Che-Wei Hu
- STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | - Philipp Kornfeind
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
| | - Juliana Exel
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
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Research on Real-Time Detection of Safety Harness Wearing of Workshop Personnel Based on YOLOv5 and OpenPose. SUSTAINABILITY 2022. [DOI: 10.3390/su14105872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wearing safety harness is essential for workers when carrying out work. When posture of the workers in the workshop is complex, using real-time detection program to detect workers wearing safety harness is challenging, with a high false alarm rate. In order to solve this problem, we use object detection network YOLOv5 and human body posture estimation network OpenPose for the detection of safety harnesses. We collected video streams of workers wearing safety harnesses to create a dataset, and trained the YOLOv5 model for safety harness detection. The OpenPose algorithm was used to estimate human body posture. Firstly, the images containing different postures of workers were processed to obtain 18 skeletal key points of the human torso. Then, we analyzed the key point information and designed the judgment criterion for different postures. Finally, the real-time detection program combined the results of object detection and human body posture estimation to judge the safety harness wearing situation within the current screen and output the final detection results. The experimental results prove that the accuracy rate of the YOLOv5 model in recognizing the safety harness reaches 89%, and the detection method of this study can ensure that the detection program accurately recognizes safety harnesses, and at the same time reduces the false alarm rate of the output results, which has high application value.
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