Browsing by Issue Date, starting with "2022-09"
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- Relationships between internal training intensity and well-being changes in youth football playersPublication . Silva, Rui Miguel; Clemente, Filipe Manuel; González-Fernández, Francisco Tomás; Nobari, Hadi; Oliveira, Rafael; Silva, Ana Filipa; Cancela-Carral, José MaríaThe aim of this study was two-fold: (i) to analyze the variations of training intensity and well-being measures of youth football player over a 38 week period; and (ii) to test the relationships between training intensity and well-being variations throughout a youth football season. This study followed a longitudinal design, lasting 38 weeks. Twenty-five players (age: 15.0 ± 0.4 years) participated in this study. Participants were monitored daily to quantify the training intensity (TI) using the session-rate of perceived exertion (s-RPE) and its related indices: training monotony (TM), weekly training intensity (wTI), mean training intensity (mTI), and 5-day average (5d-AVG). A four-item questionnaire was collected daily to quantify the well-being status of each player. Fatigue, stress, delayed onset muscle soreness (DOMS), sleep quality, and the Hooper Index (HI) measures were analyzed. Kruskal-Wallis H test revealed significant differences for TM, mTI, wTI and 5d-AVG (H = 359.53, p = 0.001, η2 = 0.35; H = 414.97, p = 0.001, η2 = 0.41, H = 258.42, p = 0.001, η2 = 0.24 and H = 282.18, p = 0.001, η2 = 0.26). A positive large correlation was found between TM and sleep quality (r = 0.65, p = 0.05) and a negative large correlation between mTI and sleep quality (r = −0.69, p = 0.04). In conclusion, both TI and well-being measures present significant between-week differences at different periods of the season. Also, the variations of sleep quality seem to depend on TM and mTI variations across a youth football season.
- Coping strategies and perceiving stress among athletes during different waves of the COVID-19 Pandemic—Data from Poland, Romania, and SlovakiaPublication . Makarowski, Ryszard; Predoiu, Radu; Piotrowski, Andrzej; Görner, Karol; Predoiu, Alexandra; Oliveira, Rafael; Pelin, Raluca Anca; Moanță, Alina Daniela; Boe, Ole; Rawat, Samir; Ahuja, GayatriCoronavirus disease (COVID-19), an infectious disease caused by the SARS-CoV-2 virus, has affected numerous aspects of human functioning. Social contacts, work, education, travel, and sports have drastically changed during the lockdown periods. The pandemic restrictions have severely limited professional athletes’ ability to train and participate in competitions. For many who rely on sports as their main source of income, this represents a source of intense stress. To assess the dynamics of perceived stress as well as coping strategies during different waves of the COVID-19 pandemic, we carried out a longitudinal study using the Perception of Stress Questionnaire and the Brief COPE on a sample of 2020 professional athletes in Poland, Romania, and Slovakia. The results revealed that in all three countries, the highest intrapsychic stress levels were reported during the fourth wave (all, p < 0.01) and the highest external stress levels were reported before the pandemic (p < 0.05). To analyze the data, analyses of variance were carried out using Tukey’s post hoc test and η2 for effect size. Further, emotional tension was the highest among Polish and Slovak athletes in the fourth wave, while the highest among Romanian athletes was in the pre-pandemic period. The coping strategies used by the athletes in the fourth wave were more dysfunctional than during the first wave (independent t test and Cohen’s d were used). The dynamics of the coping strategies—emotion focused and problem focused—were also discussed among Polish, Romanian, and Slovak athletes. Coaches and sports psychologists can modify the athletes’ perceived stress while simultaneously promoting effective coping strategies.
- The multistage 20-m Shuttle Run Test for predicting VO2Peak in 6–9-year-old children: a comparison with VO2Peak predictive equationsPublication . Brito, João; Domingos, Christophe; Pereira, Ana Fátima; MOUTÃO, JOÃO; Oliveira, RafaelThis study aimed (i) to verify if using and carrying a portable gas analyzer (PGA) con strained the performance of school children on the multistage 20-m shuttle run test (20mSRT), (ii) to verify which peak oxygen consumption (VO2peak) predictive equations have greater agreement with VO2peak values measured by direct oximetry using the 20mSRT. The study participants were 130 children ((67 boys (age 7.76 ± 0.97 years) and 63 girls (age 7.59 ± 0.91 years)), who performed two randomized trials of the 20mSRT with and without a PGA. Twenty-two predictive equations predicted the VO2peak values through the performance of the test with and without a PGA. Without a PGA, lower values of maximal speed (MS), total laps (TL), and total time (TT) were found for girls than for boys with a PGA. Only six equations were considered to correctly predict VO2peak. In general, higher MS, TL, and TT values were found with the use of a PGA. The predicted VO2peak values from the 20mSRT varied significantly among the published predictive equations. Therefore, we suggest that the six equations that presented satisfactory accuracy could be practically used to examine cardiorespiratory fitness in schools and in research with large populations when direct measurement of VO2peak is not feasible.
- What does provide better effects on balance, strength, and lower extremity muscle function in professional male soccer players with chronic ankle instability? hopping or a balance plus strength intervention? a randomized control studyPublication . Mohammadi Nia Samakosh, Hadi; Brito, João; Shojaedin, Seyed Sadredin; Hadadnezhad, Malihe; Oliveira, Rafael: Chronic ankle instability (CAI) has a higher frequency in soccer due to the rapid changes in body movement. Thus, this study compared the effects of eight weeks of a hopping protocol and a combined protocol of balance plus strength in a within-between group analysis. Thirty-six male professional soccer players participated in this study and were randomly allocated in three groups: control group (CG, n = 12), hopping group (HG, n = 12), and balance plus strength group (BSG, n = 12). Strength, static and dynamic balance, and function were assessed at baseline and eight weeks post intervention. First, Foot and Ankle Ability Measure (FAAM) and FAAM sport scales were applied. Then, a dynamometer was used to measure strength of the muscles around the hip, knee, and ankle joints. The Bass stick measured static balance and the Y balance test measured dynamic balance. Additionally, functional tests were carried out by Triple Hop, the Figure 8 hop, and vertical jump. A repeated measures ANOVA [(3 groups) × 2 moments] was used to compare the within and between group differences. In general, all tests improved after eight weeks of training with both protocols. Specifically, the BSG improved with large ES for all tests, while the HG improved all test with small to large effect sizes (ES). Furthermore, HG showed higher values for vertical jump (p < 0.01, ES = 1.88) and FAAMSPORT (p < 0.05, ES = 0.15) than BSG. BSG showed higher values for hip abduction (p < 0.05, ES = 2.77), hip adduction (p < 0.05, ES = 0.87), and ankle inversion (p < 0.001, ES = 1.50) strength tests, while HG showed higher values for knee flexion [ES = 0.86, (0.02, 1.69)] and ankle plantarflexion [ES = 0.52, (−0.29, 1.33)]. Balance plus strength protocol showed more positive effects than the hopping protocol alone for soccer players with CAI.
- Variations of distance and accelerometry-based GPS measures and their influence on body composition in professional women soccer playersPublication . Fernandes, Renato; Martins, Alexandre Duarte; Clemente, Filipe Manuel; Brito, João; Nobari, Hadi; Reis, Victor; Oliveira, RafaelExternal intensity quantification and body composition assessments across the season allow soccer coaches to adjust the intensity during training sessions, thereby avoiding excessive fatigue and helping players maximize their physical fitness status during matches. Thus, the aims of this study were (1) to describe variations in external intensity periods of distance and accelerometry-based measures across the early and mid-competitive phases and (2) to analyze whether the intensity variations influenced body composition across the 2019/20 competitive season. Ten players from a Portuguese BPI Ligue team (professional league) participated in this study. The participants completed ≥80% of 57 training sessions and 13 matches. The athletes were assessed in three phases (before the start of the season, after 2 months, and after 4 months) for the following variables: body fat mass, soft lean mass, fat-free mass, intracellular water, extracellular water, total body water, and phase angle (50 kHz) through bioelectrical impedance analysis (InBody S10). A 10-Hz GPS device (PlayerTek) was used to collect distance and accelerometry-based measures, which included total distance, high-speed running distance, sprint distance, acceleration, deceleration, and player load. Repeated-measures analysis of covariance (ANCOVA) with GPS-derived measures as covariates or repeated-measures analysis of variance (ANOVA) was used to compare the three moments of assessment. Although the patterns of variables’ responses were not the same as the season progressed, the values of body fat mass, fat-free mass, intracellular water, extracellular water, total body water, ratios of ECW/TBW, ECW/ICW, and phase angle improved. Variations in external intensity measures seem to influence the body composition variables across the season. These results may indicate good adaptations to the training and conditioning strategies managed by the coach and technical staff.
- Ativos intangíveis e valor acrescentado bruto – análise do subsetor fabricação de têxteisPublication . Pereira, Agostinho; Ferreira, Luís da Silva; São João, RicardoA presente investigação tem como objetivo analisar a relação entre o Valor Acrescentado Bruto (VAB) e os Ativos Intangíveis no setor têxtil português (fabricação de têxteis), no período de 2010 a 2017, bem como a relação entre o VAB e a Investigação e Desenvolvimento (I&D). A metodologia tem por base a análise inferencial, com particular incidência na análise bivariada (coeficiente de correlação linear de Pearson (paramétrico) e coeficiente de correlação de Spearman (não paramétrico)). Os resultados empíricos apontam para uma forte correlação entre o VAB e os ativos intangíveis no setor têxtil (fabricação de têxteis) em toda a sua dimensão bem como entre o VAB e I&D em toda a fileira, na fabricação de têxteis. Conclui-se através da análise inferencial que as correlações são estatisticamente significativas, ou seja, que existe uma relação entre o VAB e os ativos intangíveis e entre o VAB e a I&D.
- Da lei à prática: contributo da intervenção precoce para o desenvolvimento das crianças com perturbaçãoPublication . Carvalho, O.; Neves, M.; Martins, R.; Pascoinho, J.; Galinha, Sónia Maria Gomes AlexandreO estudo "Da Lei à Prática: Indicadores para a Inclusão", pretende apresentar os resultados da aplicação de um inquérito por questionário adaptado do “Índex para a Inclusão” de Booth e Ainscow (2002) em que se mediram um conjunto de indicadores para a inclusão. O inquérito foi aplicado no grupo “Espaço 54 – Grupo de Apoio à Educação Inclusiva” e responderam 155 elementos. O instrumento constitui um recurso para apoiar o processo de autoconhecimento das escolas, mas tendo em conta a sua polivalência e o seu uso diversificado, foi aplicado num grupo recentemente criado online onde se partilham conhecimentos e dúvidas relativamente ao Decreto-Lei n.º 54/2018 de 6 de julho. Os resultados obtidos neste grupo mostram que os participantes consideram que as escolas estão a criar culturas, políticas e práticas educativas inclusivas, pois as respostas foram quase todas nesse sentido No entanto consideram que os alunos não são de igual forma valorizados, logo necessitam de criar novas práticas de cultura inclusiva.
- Efeitos da atividade física na interação velocidade-precisão do rato em jogadores de e-sportsPublication . Fernandes, David Faustino; Branco, Marco; Catela, DavidEste estudo tem como objetivo verificar se há ou não efeitos da atividade física na interação velocidade-precisão do rato em desportos eletrónicos, através da realização de um questionário de atividade física e de um teste de precisão com o rato de computador. A amostra foi constituída por 24 indivíduos (16 do género masculino e 8 do género feminino), com idades compreendidas entre os 15 e os 50 anos (24,79±9,23 anos). É possível verificar que não existem diferenças entre grupo no tempo sentado, embora exista uma associação inversa significativa entre o tempo sentado e a AFL e AFM. Verifica-se também não existirem diferenças significativas na performance, mas existe uma associação significativa entre mScore e mEfi, mAcc e mClic. Há também uma associação positiva significativa entre altura e mClic. O número de horas de jogo é inversa e totalmente associado à mScore, mEfi, mAcc e mClic, mas associa-se diretamente à AFV. A nível teórico é possível verificar a existência de uma relação entre os desportos eletrónicos e a atividade física a nível das capacidades e habilidades usadas por um jogador de jogos eletrónicos e que é possível através da atividade física melhorar essas capacidades de forma a obter uma melhor performance. O estudo em si revela que não existem grandes diferenças significativas entre grupos, mas apresenta associações significativas relevantes.
- PROMOVER A LITERACIA EM SAÚDE MENTAL COM CRIANÇAS EM CONTEXTO ESCOLAR: UMA SCOPING REVIEWPublication . Figueiredo, Maria do Carmo (preferencial); Rosa, Marta; Silva, Mário Ribeiro da; Amendoeira, José
- Ensino dos fundamentos do jogo de futsal no escalão de IniciadosPublication . Fonseca, Isabel Andreia Lavinha da; Pinto, João FreitasO crescimento e desenvolvimento do futsal ao longo do tempo tem permitido criar uma identidade na qual foi definida a intervenção dos treinadores nos diferentes níveis de intervenção da formação desportiva dos jogadores, bem como os principais fundamentos para a compreensão do jogo e respetiva evolução (Braz et al., 2014). O presente documento insere-se no âmbito do estágio de Mestrado em Treino Desportivo, com especialização em Futsal da Escola Superior de Desporto de Rio Maior. O Estágio foi realizado no Sport Lisboa e Benfica, inserido na equipa técnica de Juniores C, participantes no Campeonato Nacional da mesma categoria e Campeonato Distrital da II Divisão de Juniores C e que se pretende que reflita sobre as tarefas e funções a realizar durante a época 2021/2022. Assim, no presente relatório realiza-se a análise do envolvimento com a caracterização do clube e equipa, o enquadramento competitivo com os resultados obtidos a nível macro (equipa) e micro (jogadores), planeamento e operacionalização de época, onde se incorpora o modelo de jogo, os mesociclos e microciclos assim como a unidade de treino padrão e sua configuração. Procura-se igualmente designar os procedimentos da equipa na competição e analisar o seu rendimento. Os objetivos da equipa foram totalmente atingidos, tendo somado o titulo de campeão distrital da II divisão da AFL com o título de Campeão Nacional Juniores C, assim como foram promovidos 14 jogadores infantis ao escalão acima. Na segunda parte do presente relatório apresenta-se o Estudo realizado e que teve por objetivo observar o ensino dos fundamentos do jogo de futsal no escalão de iniciados, aferindo a sua correta execução, assim como o transfere do treino para o jogo.