Percorrer por autor "Fernandes, Renato"
A mostrar 1 - 10 de 20
Resultados por página
Opções de ordenação
- Análise da variação da carga Interna de treino ao longo de dez microciclos dos períodos preparatório e competitivo numa equipa europeia de futebol jovemPublication . Oliveira, Rafael; Fernandes, Renato; Dinis, Miguel; Ferreira, Francisco; Brito, João PauloO presente estudo comparou a carga semanal de treino interno em 10 microciclos (M) em atletas sub-12. Vinte e oito jogadores de futebol sub-12 (idade, 10,96 ± 0,19 anos, altura, 152,82 ± 7,47 cm, peso 40,76 ± 6,29 kg) participaram no estudo. A carga de treino interno foi quantificada através da perceção subjetiva de esforço da sessão. Foram calculadas a carga semanal média, a carga semanal acumulada, a monotonia e tensão do treino para cada M (1 a 5 do período preparatório e 6 a 10 do período competitivo). Os resultados revelaram diferenças significativas considerando todas as métricas (p < 0,001 para todas). Especificamente, a carga semanal média foi menor nos M4 e M7, enquanto a carga semanal acumulada foi menor nos M1, M2 e M9. A monotonia do treino e o esforço do treino apresentaram os valores mais baixos (p < 0,001 para todos) nos M1 e M9 (0 unidades arbitrárias) e os mais elevados no M6. Os dados revelaram variações de carga com todas as métricas analisadas. No entanto, as principais diferenças foram encontradas entre os microciclos com menor número de sessões de treino (uma ou duas) e os restantes microciclos, o que revela uma manutenção geral da carga ao longo dos períodos preparatório e competitivo. No entanto, este parece ser o primeiro estudo realizado com atletas sub-12, fornecendo dados relevantes para os treinadores e as suas equipas técnicas.
- Analysis of Internal Training Load Variation Over Ten Microcycles of the Preparatory and Competitive Periods in a European Youth Football TeamPublication . Oliveira, Rafael; Fernandes, Renato; da Costa Dinis, Miguel; Ferreira, Francisco; Brito, João PauloThe current study compared weekly internal training load across 10 microcycles (M) in under-12 athletes. Twenty-eight under-12 soccer players (age, 10.96 ± 0.19 years; height, 152.82 ± 7.47 cm; weight, 40.76 ± 6.29 kg) participated in the study. Internal training load was quantified using session Rating of Perceived Exertion. The average weekly load, accumulated weekly load, monotony and training strain were calculated for each M (1 to 5 of the preparatory period and 6 to 10 of the competitive period). Results revealed significant differences considering all metrics (all, p < .001). Specifically, the average weekly load was lower in M4 and M7, while the accumulated weekly load was lower in M1, M2 and M9. Training monotony and training strain showed lower values (all, p < .001) in M1 and M9 (0 arbitrary units) and the highest on M6. The data revealed load variations with all metrics analysed. However, the main differences were found between the microcycles with the lowest number of training sessions (one or two) and the remaining microcycles, which reveals a general maintenance of the load throughout the preparatory and competitive periods. However, this appears to be the first study carried out with under-12 athletes, providing relevant data for coaches and their technical staff.
- Caracterização Socioprofissional dos Treinadores do Futebol de Formação da AFL e AFSPublication . Teixeira, Eduardo; Padinha, Vítor; Coito, Nuno; Fernandes, Renato; Miguel, MauroO presente relatório, desenvolvido pelo Gabinete de Futebol da Escola Superior de Desporto de Rio Maior (FOOTESDRM), do Instituto Politécnico de Santarém, pretendeu caracterizar os Treinadores de Futebol de Formação inscritos na Associação de Futebol de Leiria (AFL) e na Associação de Futebol de Santarém (AFS), na época desportiva 2022-2023. De acordo com os dados disponibilizados pelas respetivas associações, a população total de estudo compreende 760 treinadores. Sequentemente, a amostra do estudo foi constituída por 391 Treinadores (192 inscritos na AF Leiria e 199 inscritos na AF Santarém). A recolha de dados ocorreu entre fevereiro e abril de 2023, tendo os mesmos sido recolhidos através da aplicação online (Microsoft Forms) de um questionário, que integrou um total de 33 questões (respostas fechadas às opções existentes). O instrumento apresentou uma estrutura composta por um consentimento informado, uma área de caraterização socioprofissional (área 1) e uma área de conhecimento e domínio tecnológico (área 2). Asseverando-se uma participação de 51,5% dos treinadores das duas associações, observa-se que: (a) menos de 5% dos treinadores são do sexo feminino; (b) somente 8,7% dos treinadores apresentam idade superior a 49 anos; (c) predominantemente, as habilitações técnicas dos treinadores são de Grau I e II (apenas 3,5% têm Grau III e IV); (d) 44,6% dos treinadores têm formação superior, dos quais 70% são formados na área das ciências do desporto; (e) 13,6% dos treinadores são, também, jogadores federados; (f) os treinadores acedem ao TPTD maioritariamente através dos cursos de treinadores das associações (61,9%); tendencialmente, os treinadores exercem a sua atividade no distrito de residência (88% AF Leiria e 87,9% AF Santarém); (g) cerca de metade dos treinadores não possuem qualquer vínculo laboral com os clubes e apenas 25% realiza a sua atividade como prestador de serviços; (h) 15,9% dos treinadores não aufere qualquer tipo de valor remuneratório mensal e 46,5% recebe entre 50 a 150 euros mensais; (i) somente 1,3% dos treinadores auferem um valor remuneratório acima dos 800 euros; (j) 34,5% dos treinadores treinam simultaneamente duas (29,4%) ou três equipas (5,1%); (k) 82,6% dos treinadores têm um emprego principal e 1,5% são estudantes; (l) 55,8% dos treinadores têm filhos, e 52,1% são casados ou estão em união de facto; (m) 54,2% dos treinadores são solteiros e não têm filhos. Em conclusão, quando correlacionadas as várias variáveis, não se verificam diferenças significativas no perfil dos treinadores da AF Leiria e AF Santarém, destacando-se em ambas as associações a quase inexistente profissionalização no desempenho desta atividade. Ser treinador no futebol de formação nestes dois distritos é, essencialmente, uma atividade de cariz voluntária.
- 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 resultPublication . Oliveira, Rafael; Ceylan, Halil İbrahim; Fernandes, Renato; Morgans, Ryland; Nobari, Hadi; Nalha, Matilde; Brito, JoãoThe 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 24.66 ± 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), 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 session.
- Evaluation of internal load intensity in under-11 soccer players: presence and absence of feedback in small-sided games. A case studyPublication . Oliveira, Rafael; Fernandes, Renato; Pereira, Eva; Brito, Luisa; Figueiredo, Marta; Brito, João PauloThe objectives were to compare small-sided games with different numbers of players (3 vs 3; 4 vs 4; 5 vs 5) with and without feedback. The participants were 12 male athletes in the under-11 category. HR monitors were used to measure HR, and the modified Borg scale (CR-10) was used to quantify their rating of perceived exertion (RPE). The RPE was also multiplied by exercise duration to generate s-RPE. All games were played twice, once with and once without feedback. In games with feedback, the greater the number of players, the higher the HR. The greater the number of athletes, the higher the RPE and s-RPE values, regardless of whether feedback is present. In 3 vs 3, HR was higher with feedback (p = .028); in 5 vs 5, RPE and s-RPE were higher with feedback than without (p = .026 for both). In conclusion, the results indicated a relationship between the number of athletes, the presence of feedback and variables such as HR, RPE and s-RPE. In games with feedback, the more athletes, the higher the HR. Furthermore, the greater number of athletes has been observed to increase RPE and s-RPE, regardless of feedback.
- External load transition practices from pre-season to in-season. A case study in elite female professional soccer playersPublication . Oliveira, Rafael; Morgans, Ryland; Fernandes, Renato; Brito, João; Espada, Mário C.; Santos, Fernando J.Thestudy aim wastocomparetheexternal load during varying microcycles (M1-M4 during pre-season and M5during the in-season) in elite female Portuguese soccer players and to describe external load variations between differing Ms. Fourteen first-team players partici pated in the study (age 23.29 ± 3.19 years, weight 59.14 ± 6.87 kg, height 1.66 ± 0.08 m). Load measures included total distance, high-speed running (HSR) distance (�15 km/h), number ofaccelerations and decelerations [acceleration 1 (ACC1), >1–2 m/s; acceleration 2 (ACC2), >2–3m/s; acceleration 3 (ACC3), >3–4 m/s; acceleration 4 (ACC4), >4 m/s] and decelerations [deceleration 1 (DEC1), <1–2 m/s; deceleration 2 (DEC2), <2–3 m/s; deceler ation 3 (DEC3), <3–4 m/s; deceleration 4 (DEC4), <4 m/s]. M1 showed higher values of total distance, ACC1, ACC2, ACC3, DEC2,DEC3andDEC4thanM2(p=<0.001–0.04), although HSR washigher inM2(p<0.001). M2showedlowervalues ofHSR, ACC1, DEC1,DEC2,DEC3thanM3(p=0.001–0.04).M3reportedhigher values of total distance, ACC1,ACC2,DEC1,DEC2thanM4(p=<0.001–0.03),whileM4onlyfoundhighervalues of ACC4andDEC4thanM5(both,p=0.01).Thehighestvaluesoccurred inM3for the majority of external load metrics (except ACC3, ACC4, and DEC4 which were higher in M4). However, during the transition from M4 to M5, only ACC4 and DEC4 decreased with all other measures maintained, thus supporting the notion to maintain similar loading patterns during official competition.
- External load transition practices from pre-season to in-season. A case study in elite female professional soccer playersPublication . Oliveira, Rafael; Morgans, Ryland; Fernandes, Renato; Brito, João Paulo; Espada, Mário C.; Santos, Fernando J.Thestudy aim wastocomparetheexternal load during varying microcycles (M1-M4 during pre-season and M5during the in-season) in elite female Portuguese soccer players and to describe external load variations between differing Ms. Fourteen first-team players participated in the study (age 23.29 ± 3.19 years, weight 59.14 ± 6.87 kg, height 1.66 ± 0.08 m). Load measures included total distance, high-speed running (HSR) distance (�15 km/h), number ofaccelerations and decelerations [acceleration 1 (ACC1), >1–2 m/s; acceleration 2 (ACC2), >2–3m/s; acceleration 3 (ACC3), >3–4 m/s; acceleration 4 (ACC4), >4 m/s] and decelerations [deceleration 1 (DEC1), <1–2 m/s; deceleration 2 (DEC2), <2–3 m/s; deceler ation 3 (DEC3), <3–4 m/s; deceleration 4 (DEC4), <4 m/s]. M1 showed higher values of total distance, ACC1, ACC2, ACC3, DEC2,DEC3andDEC4thanM2(p=<0.001–0.04), although HSR washigher inM2(p<0.001). M2showedlowervalues ofHSR, ACC1, DEC1,DEC2,DEC3thanM3(p=0.001–0.04).M3reportedhigher values of total distance, ACC1,ACC2,DEC1,DEC2thanM4(p=<0.001–0.03),whileM4onlyfoundhighervalues of ACC4andDEC4thanM5(both,p=0.01).Thehighestvaluesoccurred inM3for the majority of external load metrics (except ACC3, ACC4, and DEC4 which were higher in M4). However, during the transition from M4 to M5, only ACC4 and DEC4 decreased with all other measures maintained, thus supporting the notion to maintain similar loading patterns during official competition.
- In-season body composition effects in professional women soccer playersPublication . Oliveira, Rafael; Francisco, Rúben; Brito, João; Martins, Alexandre; Fernandes, RenatoThe assessment of anthropometric and body composition variables has been considered crucial to improve soccer athletes’ performance and health. Thus, the aim of this study was to analyse the anthropometric and body composition effects in professional soccer women players
- In-season internal load and wellness variations in professional women soccer players: comparisons between playing positions and statusPublication . Fernandes, Renato; Brito, João; Vieira, Luiz; Martins, Alexandre; Clemente, Filipe; Nobari, Hadi; Reis, Victor; Oliveira, RafaelThe internal intensity monitoring in soccer has been used more in recent years in men's football, however, in women's soccer, the existing literature is still scarce. The aims of this study were threefold: (a) to describe the weekly variations of training monotony (Foster, 1998), training strain and acute:chronic workload ratio (Murray et al., 2017) through session Rated Perceived Exertion (s-RPE); (b) to describe weekly variations of Hooper Index [stress, fatigue, Delayed Onset Muscle Soreness (DOMS) and sleep] (Hooper & Mackinnon, 1995); and (c) to compare those variations between playing positions and player status. Nineteen players (24.1±2.7 years) from a Portuguese BPI League professional team participated in this study. All variables were collected in a 10-week in-season period with 3 training sessions and 1 match per week during the 2019/20 season. Considering the overall team, the results showed that there were some associations between Hooper Index categories and s-RPE like stress or fatigue (0.693, p<0.01), stress or DOMS (0.593, p<0.01), stress or s-RPE (-0.516, p<0.05) and fatigue or DOMS (0.688, p<0.01). There were no differences between all parameters in playing positions or player status. In conclusion, the study revealed that higher levels of fatigue and DOMS occurs concurrently with better nights of sleep. Moreover, any in-season variations concerning internal load and perceived wellness seems independent of position or status in outfield players. Also, the data showed that the higher the players’ reported stress, the lower the observed s-RPE, thus possible indicating a mutual interference of experienced stress levels on the assimilation of training intensity by women elite soccer players.
- In-season internal load and wellness variations in professional women soccer players: comparisons between playing positions and statusPublication . Fernandes, Renato; Brito, João; Vieira, H.L.P; Martins, Alexandre; Clemente, Filipe; Nobari, Hadi; Reis, Victor; Oliveira, RafaelThe internal intensity monitoring in soccer has been used more in recent years in men's football, however, in women's soccer, the existing literature is still scarce. The aims of this study were threefold: (a) to describe the weekly variations of training monotony (Foster, 1998), training strain and acute:chronic workload ratio (Murray et al., 2017) through session Rated Perceived Exertion (s-RPE); (b) to describe weekly variations of Hooper Index [stress, fatigue, Delayed Onset Muscle Soreness (DOMS) and sleep] (Hooper & Mackinnon, 1995); and (c) to compare those variations between playing positions and player status. Nineteen players (24.1±2.7 years) from a Portuguese BPI League professional team participated in this study. All variables were collected in a 10-week in-season period with 3 training sessions and 1 match per week during the 2019/20 season. Considering the overall team, the results showed that there were some associations between Hooper Index categories and s-RPE like stress or fatigue (0.693, p<0.01), stress or DOMS (0.593, p<0.01), stress or s-RPE (-0.516, p<0.05) and fatigue or DOMS (0.688, p<0.01). There were no differences between all parameters in playing positions or player status. In conclusion, the study revealed that higher levels of fatigue and DOMS occurs concurrently with better nights of sleep. Moreover, any in-season variations concerning internal load and perceived wellness seems independent of position or status in outfield players. Also, the data showed that the higher the players’ reported stress, the lower the observed s-RPE, thus possible indicating a mutual interference of experienced stress levels on the assimilation of training intensity by women elite soccer players.