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- Effects of lower limb power, aerobic capacity and hand grip strength on the technical efficiency of young tennis playersPublication . Honório, Samuel; Santos, Jorge; Serrano, João; Rebelo, Miguel; Semião, Pedro; Vitorino, Diogo; Groflin, Yannick; Fernandes, Helder Miguel; Vaz, Luís; Silva, Ana Filipa; Thomas, Ewan; Kramperova, Veronika; Batista, Marco; SamuelIntroduction: Tennis is a sport with no time limit. This can result in matches lasting less than an hour or up to five hours. This variability requires that high-competition tennis athletes be trained both at an anaerobic level for better performance, and at an aerobic level, to help with recovery between points, during the game. Methods: This cross-sectional study intended to analyse how lower limb power, aerobic capacity and hand grip strength influences the technical efficiency of tennis players. Training among young tennis players provides a positive and crucial role in building technique effectiveness, so early but convenient and adapted preparations through training play an essential role in helping these young players to improve their skills in this game. Twenty-six athletes, aged between 8 and 16 (M=11.26±2.25), 18 males (69.2%) and 8 females (30.8%) were included. They performed the Hand-Grip strength test, the aerobic capacity was tested via one-mile (1609 meters) test. For technical efficiency, they performed 50 right and 50 left shots, checking which ones reached the area inside and outside the tennis court and the leg power capacity through the Chronojump system. Non-parametric tests were applied, Mann-Whitney, Wilcoxon and Kruskal-Wallis and also Rho Spearman correlations between variables. Results: Comparisons between level of training (p≤0.02) and years of practice (p≤0.04) revealed that all the variables had a direct and positive influence on the technical efficiency of these tennis players. As for correlation results, all independent variables have a strong correlation with tennis technical efficiency (0.480 to 0.736). Conclusions: Findings suggest that higher physical fitness capacities are associated with greater technical efficiency.
- Ethical aspects in scientific literature on participatory research approaches with older adults: a scoping review protocolPublication . Serrat, Rodrigo; Urbaniak, Ann; Groot, Barbara; Ikier, Symai; Yellon, Tamar; Yaylagul, Nilufer; Gerdina, Otto; Pihlainen, Kaisa; Wanka, Anna; Ozola, Aija; Korkmaz, Mehmet; Honório, Samuel; Pons-Vila, Joan; Lucantoni, Davide; JBI Evidence Synthesis, HumanObjective: This scoping review will systematically map and synthesize the ethical aspects addressed in the scientific literature on participatory research involving older adults. It will examine both procedural or principle-based research ethics and relational or situational ethics, exploring how these are shaped by contexts and considerations of diversity. The review will also identify conceptual frameworks and gaps to inform research and ethical practice. Introduction: Participatory research with older adults is gaining momentum, with ethical considerations central to such approaches. Yet the ethical complexity of participatory processes is often underreported. This review will explore how ethical aspects are described in the literature. Eligibility criteria: Studies will be included if they focus on individuals aged 60 and over who are involved in research through consultative, collaborative, or co-decisional roles. Eligible studies must explicitly address ethical aspects related to procedural or principle-based research ethics, relational or situational ethics, or both. Methods: Given the growing emphasis on ethical considerations in participatory research involving older adults, a scoping review is appropriate for mapping the extent, range, and nature of the available evidence. The review will follow JBI methodology and established scoping review frameworks, incorporating both descriptive quantitative and qualitative analyses. Six databases will be searched: Web of Science, Scopus, PsycINFO, PubMed, CINAHL, and Sociological Abstracts. Two reviewers will independently screen titles and abstracts, and assess full texts for inclusion, with a third reviewer consulted as needed. Findings will be organized under conceptual and thematic headings and presented in tables, figures, and descriptive synthesis.
- História, ficção e identidade: o 25 de Abril na literatura para crianças e jovens.Publication . Pires, Natividade; Arnaut, Ana Paula; Peixinho, Ana TeresaEste artigo aborda uma diversidade de livros para crianças e jovens sobre o 25 de Abril de 1974, publicados ao longo de cinco décadas. As dimensões informativa, pedagógica, ideológica e literária articulam-se de diferentes formas, sendo estas obras multifacetadas na transmissão às crianças e jovens do séc. XXI dos valores defendidos pela Revolução do Cravos em Portugal.
- Menarche, somatic maturity, and physical fitness in Portuguese girls: An intergenerational analysis based on the Mirwald equationPublication . Silva, Ana Filipa; Honório, Samuel; Espada, Mário; González-Frenández, FranciscoPurpose: This study aimed to assess age at menarche in Portuguese girls and compare it with their mothers, examine its association with somatic maturity estimated by the Mirwald equation, and characterise physical fitness in pre- and post-pubertal girls. Material and methods: 71 Portuguese girls (10–13 years, post-menarche) completed a questionnaire on menarcheal age (self and mothers), anthropometric assessments (height, sitting height, body mass, waist circumference), and physical fitness tests (handgrip, isometric mid-thigh pull, 3-min Kasch Pulse Recovery Test). Somatic maturity was estimated with the Mirwald equation. Analyses included paired and independent t-tests, effect sizes, correlations, and agreement (Bland–Altman, Lin’s CCC). Results: Pre-PHV girls had negative maturity offset values (–0.58 ± 0.62 years), while post-PHV girls were beyond PHV (1.28 ± 0.91 years). Mean age at menarche was 10.87 ± 0.93 years, significantly earlier than their mothers (12.00 ± 1.44 years; mean difference = –1.09, p < 0.001). Post-PHV girls showed higher absolute strength (handgrip right: 18.86 ± 3.68 vs. 12.74 ± 3.10 kg, d = 1.72; IMTP: 63.46 ± 12.54 vs. 45.58 ± 11.93 kg, d = 1.44), while relative strength differences were smaller (handgrip: 0.35 ± 0.08 vs. 0.30 ± 0.09 kg/kg, d = 0.67). Endurance did not differ. The Mirwald equation underestimated years since menarche by 0.94 ± 1.10, with weak agreement (Lin’s CCC = 0.37). Conclusions: Biological maturation strongly influenced absolute strength, largely explained by body size. Relative strength and maturity offset-based estimates of years since menarche showed weaker validity, highlighting the need for refined prediction models.