Browsing by Author "Sampaio, Tatiana"
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- Accelerometer-measured physical activity in Portuguese children from a rural area: a school-based cross-sectional studyPublication . Vasques, Catarina; Sampaio, Tatiana; Teixeira, José Eduardo; Ginja, Samuel; Magalhães, PedroYoung people are leading increasingly sedentary lives replacing physical activity with activities such as watching TV, internet surfing and video gaming. Of particular importance for physical activity promotion are schools where physical activity can be incorporated to improve student health outcomes and cognitive performance. The World Health Organization (WHO) recommends that children engage in at least 60 minutes per day of moderate to vigorous physical activity (MVPA) for children and adolescents (between 5-18 years of age). However, few children follow these recommendations. In Portugal, some data suggest that as few as 7% do so. Furthermore, most physical activity studies take place in urban areas, so little is known about how active children and adolescents are in more rural parts of the country. The Acti-Study is a collaboration between the Instituto Politécnico de Bragança (Portugal) and Ulster University (UK) with the primary aim of assessing MVPA levels in students (age 10-16) from a high school in a rural town, in the Northeast of Portugal. Data collection will take place between September 2022 and January 2023, using a cross-sectional design. Students will receive a study pack containing information materials, a sociodemographic questionnaire and consent form for parental completion, and an assent form for student completion. Optionally, the questionnaire may be completed online. Participants will be informed that participation is voluntary and that they can withdraw at any time. Once children have returned the relevant documents completed and signed, they will be instructed to wear a hip-worn accelerometer (ActiGraph®, either GT3X or GT1M), on an elastic belt, for seven consecutive days (including weekend). Children who return their accelerometer will be rewarded with a 5€ voucher, and with a second one if they wore the accelerometer for a minimum of three days (at least 6h/day and at least one weekend). Data will be analysed through descriptive statistics, mostly in tables, divided by gender. With participant consent, data on anthropometric measures (height and weight), available through the school, will also be used. Primary analysis will consist of percentage of students who meet MVPA guidelines; secondary analyses will include exploring the relationship between sociodemographic variables (e.g., parental education) and MVPA, between parent-reported MVPA and accelerometer MVPA, and between accelerometer MVPA and anthropometric data. The results are expected to provide an understanding of the levels and factors associated with MVPA in rural Portugal, to allow comparison with other samples (e.g., from urban areas), to raise awareness to the problem and stimulate more physical activity initiatives. Study with ethics approval by Ulster University (REC/22/0060).
- Acti-study: avaliação dos níveis de atividade física em crianças da região de Trás-os-MontesPublication . Sampaio, Tatiana; Vasques, Catarina; Teixeira, José Eduardo; Magalhães, Pedro; Ginja, SamuelThe World Health Organization (WHO) recommends that children engage in at least 60 minutes per day of moderate to vigorous physical activity (FA) for children and adolescents. However, there are few children who follow these recommendations. In Portugal, some data suggest that only 7% of young people comply with it. Unfortunately, most studies on physical activity take place in urban areas, so we still know relatively little about how active children and adolescents are in regions such as Alfândega da Fé. Thus, the Acti-study aims to evaluate the levels of PA in children and adolescents between 5th and 9th grade with ages between 10 and 16 years, of the Alfândega da Fé. Subsequently, it is intended to analyse the differences in PA levels between rural and urban areas. The project includes two phases: (1) Implementation of sociodemographic questionnaire to obtain general information about the target population; (2) An intervention phase through the assessment of the PA levels using accelerometry (ActiGraph®) and body composition by anthropometric measures. The first phase will be based socio-demographic questionnaires in representative sample of children living in rural zones to understand the determinants for the physical activity. Data collection will be conducted in the municipality of Alfandega da Fé between September and December 2022. As a research hypothesis, higher levels of regular PA are defined for children in rural areas.
- 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.
- Association between the upper quarter dynamic balance, anthropometrics, kinematics, and swimming speedPublication . Bartolomeu, Raúl Filipe; Sampaio, Tatiana; Oliveira, João P.; Barbosa, Tiago M.; Morais, J.E.Besides recurrently assessed water-based parameters, there are also some individual characteristics that affect swimming performance that are not water related. In the past few years, dynamic balance has been associated with land sports performance. Conversely, evidence on this topic in swimming is scarce. The purpose of this study was to assess the association between on-land dynamic balance and swimming performance. Sixteen young adults and recreational swimmers were recruited for the present study (8 males 20.8 2.0 years, and 8 females 20.1 1.9 years). A set of anthropometric features were measured. The upper quarter Y-balance test was selected as a dynamic balance outcome, and swimming speed as the swimming performance indicator. The results showed a moderate and positive correlation between dynamic balance and swimming performance (p < 0.05). Speed fluctuation was highly and negatively related to swimming speed (p < 0.001), i.e., swimmers who had higher scores in the dynamic balance were more likely to deliver better performances. This suggests that in recreational swimmers, the stability and mobility of the upper extremity had a greater influence on swimming performance. Therefore, swimming instructors are advised to include dynamic balance exercises in their land-based training sessions to improve their swimmers’ performance
- Avaliação dos níveis de atividade física em crianças da região de Trás-os-Montes: uma perspectiva pós-pandemiaPublication . Sampaio, Tatiana; Vasques, Catarina; Teixeira, José Eduardo; Magalhães, Pedro; Ginja, SamuelO confinamento, motivado pela pandemia da COVID-19, teve um impacto significativo ao nível da atividade física (AF) e da exploração motora das crianças. Baseado neste pressuposto, o presente projeto tem como objetivo avaliar os níveis de AF após pandemia em crianças, com idades compreendidas entre os dez e dezasseis anos, que habitam em zonas rurais da região de Trás-os-Montes (Portugal). Posteriormente, pretende-se analisar as diferenças nos níveis de AF entre crianças de zonas rurais e urbanas. O projeto contempla 2 fases: (1) Implementação de questionários sociodemográficos para a obtenção de dados gerais da população alvo; (2) fase de intervenção através da avaliação dos níveis de AF por acelerometria (ActiGraph GT3X®) e aferição da composição corporal por medidas antropométricas. A primeira fase será baseada na aplicação de questionários sociodemográficos numa amostra representativa de crianças da zona rural brigantina, de forma a entender quais as determinantes para a prática de AF. A recolha de dados será realizada no concelho de Alfandega da Fé entre setembro e dezembro de 2022. Como hipótese de estudo, delimitam-se níveis mais elevados de prática de AF habitual para as crianças das zonas rurais. O estudo pretende fornecer uma atualização epidemiológica do possível impacto da pandemia nos níveis de AF das crianças de um concelho da região de Trás-os-Montes.
- Bibliometric Review of the Step Test: A Comprehensive Analysis of Research Trends and DevelopmentPublication . Sampaio, Tatiana; Marinho, D.A.; Bragada, José A.; Morais, J.E.The step test provides valuable information on cardiorespiratory parameters such as maximal oxygen uptake and heart rate. Cardiorespiratory capacity is critical to health-related fitness, with heart rate recovery after exercise serving as a predictor of mortality risk. Main Body: The primary objective of this review was to identify trends, key contributors, and emerging themes in the step test literature through 2023 using the Web of Science Core Collection. Bibliometric data extraction and analysis were performed using a dedicated bibliometric software (VOSviewer). The analysis showed continued interest through 2021. The research categories highlight the multidisciplinary nature of the step test, covering cardiovascular systems, respiratory systems, sports sciences, and medicine. It has gained global attention, with 31 countries involved, with Brazil and the United States leading the way. The diversity of contributing nations is increasing, reflecting a growing global interest. With 111 journals involved, such as Respiratory Care and Medicine and Science in Sports and Exercise, step test research is spread across the academic landscape. With 761 contributing researchers, there is a collaborative and diverse community. The top 10 institutions, including the University of Alabama System and Monash University, illustrate the variety of settings in which step test studies are conducted. Step test studies span multiple disciplines, underscoring their adaptability. The clusters identified in this bibliometric analysis of the step test literature guide future research, suggesting avenues for refining protocols, exploring health implications, optimizing tests for specific conditions such as chronic obstructive pulmonary disease, and adapting step tests in diverse populations. Conclusions: Practical implications highlight the role of the step test in cardiovascular risk assessment, fitness monitoring, and rehabilitation. This broad review underscores the relevance of the step test in diverse settings, reflecting its adaptability and ease of application across occupational and clinical settings
- Characterization and Comparison of Athletic Performance and Change of Direction Deficit Across Youth Futsal Age GroupsPublication . Oliveira, João P.; Marinho, Daniel A.; Sampaio, Tatiana; Carvalho, Sílvio; Martins, Hugo; Morais, J. E.Futsal players need peak strength, functional capacity, speed, and explosive lower-limb power for optimal performance. The aim of this study was to (i) characterize and compare anthropometric characteristics, lower limb strength/power, dynamic balance, linear sprint speed, COD performance, and COD deficit across young futsal age groups and (ii) identify key predictors of COD deficit. Methods: Thirty-three male futsal players from three age groups (U13, U15, and U17) were tested. Results: All anthropometric variables showed significant group effects with moderate to strong effect sizes, where U17 presented the largest values, followed by U15 and U13. Strength and power variables presented the same trend. The dynamic balance differed significantly across groups. Significant differences between groups with moderate effect sizes were noted in linear sprints (F = 19.54, p < 0.001, η2 = 0.57), zigzag (F = 19.54, p = 0.002, η2 = 0.35), and COD deficit (F = 19.54, p < 0.001, η2 = 0.46). Post hoc tests revealed that U13 and U15 outperformed U17 in the COD deficit (p < 0.002). The COD deficit showed a quadratic relationship with age, initially improving but later declining in older players (p < 0.001). The body mass and the posteromedial relative difference predicted the COD deficit, with the coefficient of determination (R2) explaining 39% of the COD variance. Conclusions: Coaches and practitioners should utilize COD drills to target various movement patterns and account for pubertal timing, as growth can impact performance
- Characterization of the lower limb dynamic balance and ankle dorsiflexion in young male futsal players: implications for performance and injury preventionPublication . Morais, J.E.; Sampaio, Tatiana; Oliveira, João P.; Lopes, Vitor P.; Barbosa, Tiago M.Dynamic balance and ankle dorsiflexion are associated with performance and injury risk in young athletes. The aim of this study was to characterize lower limb dynamic balance and ankle dorsiflexion in young futsal players and to understand their relationships. Eighteen young male futsal players (with 15.2 ± 1.2 years of age and with a right lower limb dominance) were evaluated for dynamic balance of both lower limbs using the Y-balance test (LQYBT). Ankle dorsiflexion range of motion (DROM) was measured during the weight-bearing lunge test. There were no significant differences in dynamic balance variables between the two sides (p > 0.05). However, the composite scores (CS) of both lower limbs showed a risk of injury (CS was less than 89%). Ankle dorsiflexion of the right lower limb was significantly greater than that of the left lower limb (mean difference = 1.00, 95% confidence intervals (CI) = −0.00 to 2.00, t = 2.11, p = 0.050, d = 0.50). Significant correlations and relationships between ankle dorsiflexion and dynamic balance were found only on the right side. The highest correlation (rs = 0.598; p = 0.009) and the highest relationship (R2 = 0.50; p = 0.001) were observed with the relative anterior reach. The present results indicate that young futsal players have poor dynamic balance scores. Ankle dorsiflexion was only significantly related to dynamic balance on the right side. Further research is needed to better understand these relationships in youth futsal.
- Classification of the pre-exam anxiety levels in physically inactive students from 48 countries: application of the K-means clustering machine learning algorithm.Publication . Encarnação, Samuel; Monteiro, A.M.; Sampaio, Tatiana; Vaz, Paula Marisa Fortunato; Forte, PedroPhysical inactivity is a behavioral factor that is strongly associated with anxiety symptoms in children and adolescents. Anxiety is a disabling condition that reduces academic performance (Kandola et al., 2020).