Browsing by Author "Neiva, Henrique P."
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- 13th FINA world Championship: analysis of swimsuits used by elite male swimmersPublication . Neiva, Henrique P.; Vilas-Boas, João Paulo; Barbosa, Tiago M.; Silva, A.J.; Marinho, D.A.The polyurethane swimsuits has become the notice around the pools in the past couple years. A better body position and the reducing of drag are believed to be some of the reasons that allow the swimmers wearing these swimsuits to go faster (Kainuma et al., 2009). The purpose of this study was to verify the distribution of different swimsuits used by male swimmers during the finals at the last world championships being held at Rome in 2009
- Advancing sports science and physical education research through a shared understanding of the term motor performance skills: a scoping review with content analysisPublication . Sortwell, Andrew; Behringer, Michael; Granacher, Urs; Trimble, Kevin; Forte, Pedro; Neiva, Henrique P.; Clemente-Suárez, Vicente Javier; Ramirez-Campillo, Rodrigo; Konukman, Ferman; Tufekcioglu, Ertan; Filiz, Bijen; Branquinho, Luís; Ferraz, Ricardo; Sadeghi, Hassan; Arroyo-Toledo, JaimeBackground: The inappropriate usage of terms and concepts and/or unclear definitions provided in the scientific literature hinder progress in any scientific field. This risk is especially noticeable in applied fields of research such as sports science and physical education. Objective: This study explored existing literature that uses the term 'motor performance skills' and aimed to propose a comprehensive definition to be applied in future research. Method: Following an adapted scoping approach grounded in the rapid review model, we searched electronic databases Pub-Med/Medline, Web of Science, and Scopus until February 2022. The primary demographic focus was sports science and physical education disciplines. After screening of titles and abstracts, 184 papers were identified for a full review. Twenty-two papers met the inclusion criteria from the full review and received qualitative content analysis. The qualitative content analysis focused on the elaborated qualities of the term 'motor performance skill'. Coding was used to identify and extract content, identify patterns, and observe the depth of interpretation of the term. Results: Only six papers used descriptive language, and three used explanatory language to convey aspects of the term's meaning. All included papers extrapolated or provided examples to demonstrate the term's meaning. Based on a collaborative process, the study reached a proposed definition that has the potential to be coined for the term 'motor performance skills' and used in future research. Conclusion: Thus, the current analysis revealed the need to collaboratively address the conceptual ambiguity and develop a comprehensive definition of 'motor performance skills' © 2022 Australian International Academic Centre. All rights reserved.
- Aerobic training response in young swimmers of different levelPublication . Marinho, D.A.; Garrido, Nuno D.; Barbosa, Tiago M.; Neiva, Henrique P.; Costa, Aldo M.; Silva, A.J.; Marques, Mário C.Some authors (e.g. Maclaren and Coulson, 1999; Dekerle, 2006) reported that aerobic training has a positive effect on critical velocity in swimming. However, it raises the question whereas this effect is similar among swimmers of different performance level. Therefore, the purpose of this study was to determine the training responses in aerobic parameters (critical velocity and critical stroke rate) in young swimmers of different level during an in-season period of training.
- Análise dos Fatos utilizados no 13º Campeonato do Mundo FINAPublication . Neiva, Henrique P.; Vilas-Boas, João Paulo; Barbosa, Tiago M.; Silva, A.J.; Marinho, D.A.Para nadar mais rápido, é necessário aumentar a propulsão e diminuir o arrasto. Para o caso, os fatos de natação de poliuretano podem ter desempenhado um papel importante (Marinho et al., 2009). Com este estudo pretende-se descrever a distribuição dos diferentes modelos de fatos de natação usados pelos nadadores durante todas as finais do 13º Campeonato do Mundo de natação, realizado em Roma e assim perceber as preferências dos nadadores de elevado nível desportivo.
- Applications of Machine Learning to Optimize Tennis Performance: A Systematic ReviewPublication . Sampaio, Tatiana; Oliveira, João P.; Marinho, D.A.; Neiva, Henrique P.; Morais, J.E.Tennis has changed toward power-driven gameplay, demanding a nuanced understanding of performance factors. This review explores the role of machine learning in enhancing tennis performance. (2) Methods: A systematic search identified articles utilizing machine learning in tennis performance analysis. (3) Results: Machine learning applications show promise in psychological state monitoring, talent identification, match outcome prediction, spatial and tactical analysis, and injury prevention. Coaches can leverage wearable technologies for personalized psychological state monitoring, data-driven talent identification, and tactical insights for informed decision-making. (4) Conclusions: Machine learning offers coaches insights to refine coaching methodologies and optimize player performance in tennis. By integrating these insights, coaches can adapt to the demands of the sport by improving the players’ outcomes. As technology progresses, continued exploration of machine learning’s potential in tennis is warranted for further advancements in performance optimization
- Assessing the aerodynamics of an able-bodied cyclist and a shoulder-amputee cyclist by computer fluid DynamicsPublication . Forte, Pedro; Marinho, D.A.; Neiva, Henrique P.; Sampaio, Tatiana; Teixeira, José Eduardo; Branquinho, Luís; Silva, A.J.; Monteiro, A.M.; Barbosa, Tiago M.This study aimed to analyse the aerodynamics by numerical simulations with computer fluid dynamics of an ablebodied cyclist and a shoulder-amputee cyclist. An elite cyclist volunteered for this research; the cyclist was scanned with his competition gear and bicycle and the able-bodied and shoulder amputee 3D cyclists models were created. Numerical simulations were conducted between 1 m/s and 13 m/s (with increments of 1 m/s) with the fluent code. The effective surface area (ACd) varied between 0.38 and 0.59 m2 for the able-bodied cyclist; whereas, for the shoulder amputee, it varied between 0.29 m2 and 0.62 m2. The ACd difference between the able-bodied and the amputee ranged from 3% to 28% and the drag differed between 2% and 19%. The drag coefficient ranged between 0.55 and 0.84 for the able-bodied and from 0.45 and 0.92 for the shoulder-amputee. The drag ranged across the different velocities (1-13 m/s) from 0.36 N – 39.25 N for the ablebodied cyclist and for the shoulder-amputee between 0.38 N – 31.69 N. The two cyclist models presented significant differences and small effect sizes (t = 2.720; p = 0.019; d = 0.18). The linear regression models computed the drag differences between the able-bodied and the disabled cyclist; a significant relationship and very high effect sizes for drag (R2 = 0.997; R2a = 0.995; SEE = 0.996; p < 0.001) were observed. This study allowed us to conclude that the shoulder-amputee cyclist presents a lower drag compared to the able-bodied one.
- Assessment of the upper-limbs propulsive force at front crawlPublication . Morais, J.E.; Costa, M.J.; Barbosa, Tiago M.; Neiva, Henrique P.; Marinho, D.A.At front crawl, the upper-limbs are responsible fornearly 90% of the forward propulsion
- Assisted towing does not affect arm stroke coordination in front-crawl swimmingPublication . Moriyama, Shin-Ichiro; Watanabe, Yasunori; Toyoda, Yugo; Hamamichi, Takeru; Morais, J.E.; Neiva, Henrique P.; Forte, Pedro; Marinho, D.A.This study clarified changes in arm stroke coordination during assisted swimming. Fourteen male collegiate swimmers swam with and without an assist at a maximum effort.
- Can the summer break affect critical and maximal instantaneous velocity of young swimmers?Publication . Costa, M.J.; Dias, Paulo; Neiva, Henrique P.; Marinho, D.A.; Barbosa, Tiago M.Young swimmers take a summer break of several weeks and most of them engage in non-oriented swimming sessions over that period
- A comparison of experimental and analytical procedures to measure passive drag in human swimmingPublication . Barbosa, Tiago M.; Morais, J.E.; Forte, Pedro; Neiva, Henrique P.; Garrido, Nuno D.; Marinho, D.A.The aim of this study was to compare the swimming hydrodynamics assessed with experimental and analytical procedures, as well as, to learn about the relative contributions of the friction drag and pressure drag to total passive drag. Sixty young talented swimmers (30 boys and 30 girls with 13.59±0.77 and 12.61±0.07 years-old, respectively) were assessed. Passive drag was assessed with inverse dynamics of the gliding decay speed. The theoretical modeling included a set of analytical procedures based on naval architecture adapted to human swimming. Linear regression models between experimental and analytical procedures showed a high correlation for both passive drag (Dp = 0.777*Df+pr; R2 = 0.90; R2a = 0.90; SEE = 8.528; P<0.001) and passive drag coefficient (CDp = 1.918*CDf+pr; R2 = 0.96; R2a = 0.96; SEE = 0.029; P<0.001). On average the difference between methods was -7.002N (95%CI: -40.480; 26.475) for the passive drag and 0.127 (95%CI: 0.007; 0.247) for the passive drag coefficient. The partial contribution of friction drag and pressure drag to total passive drag was 14.12±9.33% and 85.88±9.33%, respectively. As a conclusion, there is a strong relationship between the passive drag and passive drag coefficient assessed with experimental and analytical procedures. The analytical method is a novel, feasible and valid way to gather insight about one's passive drag during training and competition. Analytical methods can be selected not only to perform race analysis during official competitions but also to monitor the swimmer's status on regular basis during training sessions without disrupting or time-consuming procedures.