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- 100 Jogos para uma Escola Ativa – Brincar a Jogar para Exercitar!Publication . Simões, Vera; Ramos, Liliana
- Abandono na natação: caracterização, motivos e orientações para a prevençãoPublication . Monteiro, Diogo; MOUTÃO, JOÃO; Marinho, Daniel; Cid, Luis
- Abordagem para a previsão do abandono num ginásioPublication . Sobreiro, Pedro; Santos, AbelEste estudo pretende apresentar um modelo para prever o abandono dos clientes num ginásio, baseado em dados existentes no software de gestão Health Center. As variáveis selecionadas, identificadas de acordo com a sua relevância em estudos realizados e disponibilidade de dados, foram: idade, género, tempo de inscrição, média de visitas mensais, faturação realizada ao cliente, número de aulas frequentadas e distância a percorrer para chegar ao clube. O número de clientes utilizados para a previsão de abandono foram de 810, através da utilização de um algoritmo de Machine Learning Two-class logistic regression para a classificação. A aproximação realizada permitiu prever com uma exatidão de 83% se o cliente abandonava ou ficava no ginásio. Os resultados obtidos sugerem que pode ser vantajoso a utilização da aproximação realizada para prever o abandono e explorar medidas adicionais para contrariar o abandono de clientes em risco.
- Acompanhamento de equipa de competição na natação pura desportiva. Planeamento, intervenção e controlo do processo de treino e competiçãoPublication . Loureiro, Joana Margarida Simões; Louro, Hugo; Marinho, DanielEste relatório surge no âmbito do estágio para a obtenção do grau de Mestre em Treino Desportivo, na Escola Superior de Desporto de Rio Maior, realizado numa equipa de natação absoluta. A auto - análise do planeamento, realização do treino e controlo constituíram os grandes objetivos deste relatório de estágio desenvolvido na equipa absoluta da Entidade Acolhedora durante a época 2019-2020.Na primeira parte do relatório será descrito o planeamento, intervenção e controlo do processo de treino e competição durante a época desportiva, dividida em três macrociclos. A segunda parte apresenta o estudo caso do estágio que consiste na análise da prova dos 200 livres do atleta A no Meeting Arena Lisbon (2020), e da comparação com a média dos tempos da final da prova dos 200 livres nos Campeonatos Europeus de Juniores Kazan 2019, permitindo com a análise a obtenção de dados mais concisos para objetivar a progressão do atleta A. A análise realizada neste relatório foi uma mais valia permitindo a auto reflexão do trabalho desenvolvido e possibilidades de alterações futuras.
- Acompanhamento de uma equipa de competição da modalidade de nataçãoPublication . Pedrosa, Carlos Fernando Lopes Lengyel; Louro, Hugo; Marinho, DanielDurante a época desportiva 2021/2022 realizei o estágio profissional com os escalões de infantis, juvenis, juniores e seniores no Clube de Atividade Física dos Bombeiros de Ponta Delgada (CAFBPD) onde foram acompanhados 29 atletas (18 rapazes e 11 raparigas). Com a realização deste estágio aprofundei os meus conhecimentos na modalidade de Natação, melhorei a minha intervenção enquanto treinador junto da minha equipa técnica e participei em 3 formações na área do Treino Desportivo. Ao Longo da época desportiva acompanhei as sessões de treino em água dos escalões de infantis, juvenis, juniores e seniores como treinador-adjunto, e também foi o treinador responsável pelo planeamento e orientação dos treinos físicos. Acompanhei a equipa durante as competições que decorreram ao longo da época, com a exceção de alguns meetings internacionais. Ao longo da época tentei implementar um gabinete de análise e avaliação técnica no clube, para que futuramente possa utilizar os dados recolhidos como uma ferramenta prática para auxiliar no trabalho de correção técnica dos atletas.
- Acompanhamento dos escalões de formação de Surf do Ericeira Surf Clube e o estudo do perfil de atividade dos atletas em prova no Allianz Ericeira PROPublication . Silva, Arnaldo Maria Gomes da; Teotónio, Telmo; Valadão, FilipeEste trabalho integra o estágio em Treino Desportivo de Surf no Ericeira Surf Clube e uma investigação sobre o perfil de atividade dos atletas no Allianz Ericeira PRO. O estágio visou a obtenção do grau de Mestre e do título profissional de Treinador Grau II, envolvendo orientação, planeamento e avaliação de sessões práticas (técnica, remada, posicionamento e manobras) e treino físico complementar, com adaptação individual e feedback contínuo. A investigação analisou quantitativamente heats de competição, segmentando eventos como remada, períodos estacionários e deslizes na onda, para caracterizar a distribuição temporal e a frequência das ações. Os resultados mostram predominância de longos períodos de espera e remada de posicionamento, intercalados por episódios curtos e intensos de sprint e deslize. Em conjunto, estágio e estudo fornecem evidência prática e empírica que apoia a planificação de treinos orientados para resistência específica, recuperação e capacidade explosiva, contribuindo para a preparação técnica, física e tática dos atletas.
- Active and sham transcranial direct-current stimulation (tDCS) plus core stability on the knee kinematic and performance of the lower limb of the soccer players with dynamic knee valgus; two armed randomized clinical trialPublication . Samakosh, H.M.N; Maktoubian, M.; Doost, S.P.R.; Oliveira, Rafael; Badicu, G.; Al-Mhanna, S.B.; Hassanzadeh, M.; Amadekhiar, P.; Vaskasi, R.R.; Oliveira, RafaelDynamic knee valgus (DKV) is a prevalent risk factor for anterior cruciate ligament (ACL) injuries in soccer players, particularly during noncontact mechanisms. Transcranial direct-current stimulation (tDCS) and core stability exercises have shown promise in enhancing motor control and biomechanical alignment, but their combined effects on DKV remain unexplored. This study aimed to evaluate the efficacy of active versus sham tDCS combined with core stability exercises on knee kinematic alignment and lower limb performance in young male soccer players with DKV. In this double-blind, randomized controlled trial, 42 male soccer players (aged 18–25 years) with DKV were randomly assigned to either an active tDCS group (n = 21) or a sham tDCS group (n = 21). Both groups underwent 8 weeks of core stability exercises (3 sessions/week, 30 minutes/session) preceded by 15 minutes of active (2 mA) or sham tDCS targeting the primary motor cortex (M1). The primary outcome was the frontal plane projection angle (FPPA) during a single-leg landing task, measured using 2D video analysis. Secondary outcomes included vertical jump height and 8-hop test time. Outcomes were assessed at baseline and post-intervention. A 2 × 2 mixed-model ANOVA with Bonferroni-corrected post hoc tests was used for statistical analysis via SPSS27. The active tDCS group showed significantly greater improvements in FPPA (+5.65% vs. +2.26%, p < 0.001, 𝜂p² = 0.82), vertical jump height (+25.30% vs. +10.45%, p < 0.001, 𝜂p² = 0.75), and 8-hop test time (−21.05% vs. −14.27%, p < 0.001, � �p² = 0.68) compared to the sham group. Both groups improved from baseline, but the active tDCS group exhibited larger effect sizes across all outcomes. Active tDCS combined with core stability exercises significantly enhanced knee kinematic alignment and lower limb performance in soccer players with DKV compared to sham tDCS. These findings suggest that neuromodulation, when paired with targeted exercise, is a promising strategy for injury prevention and performance enhancement in athletes. Further research is needed to explore long-term effects and applicability to diverse populations.
- Acute and chronic workload ratios of perceived exertion, global positioning system, and running-based variables between starters and non-starters: a male professional team studyPublication . Nobari, Hadi; Alijanpour, Nader; Martins, Alexandre Duarte; Oliveira, RafaelThe study aim was 2-fold (i) to describe and compare the in-season variations of acute: chronic workload ratio (ACWR) coupled, ACWR uncoupled, and exponentially weighted moving average (EWMA) through session-rated perceived exertion (s-RPE), total distance (TD), high-speed running distance (HSRD), and sprint distance across different periods of a professional soccer season (early, mid, and end-season) between starters and non-starters; (ii) to analyze the relationship the aforementioned measures across different periods of the season for starters and non-starters. Twenty elite soccer players (mean±SD age, 29.4±4.4 y; height, 1.8±0.1m; and body mass, 74.8±2.3kg). They were divided into starter and non-starter groups and were evaluated for 20weeks. ACWR had general changes throughout the season. At the beginning and end of the mid-season, the highest ACWR was observed in three parameters: s-RPE, TD, and HSRD. ACWR and EWMA through sprint distance were higher at the beginning of the early-season than at any other time of the season. The ACWR coupled of s-RPE shows a significant higher value for non-starters than starters (p=0.015; g=−1.01 [−1.98, −0.09]) and the ACWR coupled of TD shows a significant higher value for starters than non-starters in early-season (p<0.01; g=3.01 [1.78, 4.46]) and shows a significant higher value for non-starters than starters in mid-season (p<0.01; g=−2.52 [−3.83, −1.39]), and end-season (p<0.01; g=−2.57 [−3.89, −1.43]). While the EWMA of TD shows a significant higher value for starters than non-starters in early season (p<0.01; g=2.25 [1.17, 3.49]) and mid-season (p<0.01; g=2.42 [1.31, 3.71]), and shows a significant higher value for non-starters than starters in end-season (p<0.01; g=−2.23 [−3.47, −1.16]). Additionally, we found some correlations between external and internal load measures during three periods of the in-season. The study’s main finding was that the indexes of ACWR and EWMA were useful to detect differences between period and between playing status with the exception for the sprint variable. In addition, the necessary work for non-starter players’ improvement is not done during training, and these players lose their readiness as the season progresses. Consequently, these players perform poorly during the match. Therefore, coaches and their staff should consider devising new activities to keep non-starter players physically fit. This deficit must be accounted for in training because they compete in fewer matches and have less burden than starters.
- The acute effect of foam roller application on eccentric knee flexor strength in rugby sevens players: a randomised crossover trialPublication . Sağıroğlu, Isa; Ceylan, Halil İbrahim; Özdemir, Kübra; Oliveira, Rafael; Morgans, Ryland; Bragazzi, Nicola Luigi; ceylan, halil ibrahimBackground: Hamstring injuries account for approximately one in six injuries for rugby players. Contributing factors include poor eccentric strength and reduced range of motion (ROM) at the hip and knee joints. Beyond specific training methods, foam rolling is employed extensively to enhance ROM, joint mobility, general performance, and other outcomes pre- and post-physical exercise. The study aimed to investigate the acute effect of foam roller application on eccentric knee flexor strength, hip, and knee ROM in rugby sevens players. Methods: A total of 23 rugby sevens players (age: 24.16 ± 2.15 years, height: 177.0 ± 5.89 cm, body mass: 64.57 ± 6.65 kg) underwent two conditions in a randomised crossover experiment. The experimental condition included Foam Roller (FR) exercises (3 sets, 30 seconds each with 10-second recovery intervals) on the gastrocnemius and hamstring muscles of both limbs. The non-foam rolling (NFR) condition involved resting on the mat for the same time period as the foam rolling session. Maximal eccentric strength (MES), average eccentric strength (of three repetitions) (AES), active straight leg raise (ASLR), and active knee extension (AKE) tests were performed on both limbs pre- and post- each condition. Results: The present study revealed that FR improved MES and AES (~1.4–1.7%, p < 0.001), ASLR (~9–10%, p < 0.001), and AKE (~8–10%, p < 0.001) compared to the NFR condition. Conclusions: These findings confirm that FR is a viable strategy to improve eccentric knee flexor strength, hip, and knee ROM before other activities. Such applications may be useful in improving performance and reducing injury risk for athletes.
- Acute skin temperature responses to the 30-15 intermittent fitness test in professional male soccer playersPublication . Sümer Alvurdu; Arslan, Yasin; Keskin, Kadir; Oliveira, Rafael; Nobari, HadiIntroduction: Thermal imaging technology provides detailed insights into the skin temperature patterns and asymmetries of athletes, offering valuable data to enhance performance, assess the effectiveness of rehabilitation, monitor fatigue, and prevent injuries. Methods: The aim of this study was to assess acute skin temperature responses before and after the 30-15 Intermittent Fitness Test in professional male soccer players. Twenty-one profes sional soccer players performed a 30-15 IFT, and the running time, peak velocity, and true ve locity were calculated. Thermal images of the players were acquired using an infrared thermal camera before and immediately after the 30-15 IFT, and skin temperature measurements were analyzed from the anterior thigh, anterior leg, posterior thigh, and posterior leg. Results: The skin temperature asymmetries differed significantly between all regions of inter est, with the greatest difference in the anterior and posterior thighs. Pearson correlation anal ysis revealed that the 30-15 IFT parameters were not correlated with the posttest skin temper ature asymmetry for any of the region of interests. However, there were significant negative correlations between pretest skin temperature asymmetry in the posterior leg region and all 30-15 IFT parameters for running time (r=0.30; p<.05), peak velocity (r=0.3; p<.05), and true velocity (r=0.25; p<.05). Finally, athletes with lower baseline skin temperature asymmetries in the posterior leg region have better 30-15 IFT performance. Conclusion: Thermal imaging can be used to assess muscular asymmetries following specific endurance tests or conditioning training, and this information can provide valuable information for optimizing performance and injury prevention.