Browsing by Author "Valente, Nelson"
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- Comparing physical, technical and tactical performances in the World Cup Qatar 2022Publication . Branquinho, Luís; França, Elias; Teixeira, José Eduardo; Valente, Nelson; Reis, Tiago; Thomatieli-Santos, Ronaldo Vagner; Forte, Pedro; Ferraz, RicardoThe main objective of this study was to compare the physical, technical, and tactical performances of the 32 teams that participated in the FIFA World Cup Qatar 2022 (TM) concerning the confederation to which they belong and the FIFA ranking. Key statistics from the 64 matches played during the FIFA World Cup Qatar 2022 (TM) were analysed. The data from these matches were encoded and calculated by a multi-camera optical tracking system (TRACAB Gen5, ChyronHego). Significant differences were identified between Rank 1-15th vs. Rank 16-35th and Rank 1-15th vs. Rank 36-61st for possession, total attempts at goal, total attempts on receptions in the final third, and ball progressions. However, defensive line breaks were different only between Rank 1-15th vs. Rank 36-61st, and ball progressions was only different between Rank 1-15th vs. Rank 16-35th. Africa and Europe national confederation showed significant differences (all p < .05) for possession, total attempts on target, total passes, total complete passes, passes completion, completed line breaks, and receptions in the final third, except for total attempts on target, whose differences are between Asian and South American confederation (p < .05). When considering the FIFA ranking and the confederations, there are significant differences key performance indicator of the teams.
- Effects of implementating a hybrid teaching model in a basketball didactic unitPublication . Ferraz, Ricardo; Oliveira, Julio; Alves, Ana Ruivo; Forte, Pedro; Teixeira, José Eduardo; Moriyama, Shin-Ichiro; Valente, Nelson; Branquinho, LuísThe eminent purpose of physical education (PE) is to promote physical fitness, health, and overall well-being among individuals. It aims to develop motor skills, improve cognitive functions, and instill a lifelong appreciation for an active and healthy lifestyle. Physical education also fosters social skills, teamwork, and discipline, contributing to the holistic development of individuals. The study aimed to assess the impact of a hybrid teaching model, integrating elements from the Sport Education Model (SEM) and Teaching Games for Understanding (TGfU), on the performance and motivation of students during basketball lessons. Eighteen adolescents (9 girls and 8 boys) aged 15-17 years (mean ± SD: 15.67 ± 0.69 years) participated in the study. Participants engaged in basketball physical education classes twice a week, incorporating principles and attributes from both TGfU and SEM. Motivation and performance (GP) were evaluated before and after basketball sessions. The students' motivation was assessed using the Attitude Questionnaire of Students towards PE, and the performance was measured using the Game Performance Assessment Instrument. The results showed significant improvements in students' GP, but no differences in motivation was found at the end of the instructional unit. However, it was discovered that students enjoyed and appreciated physical education (PE), demonstrating a favorable attitude towards the subject. A hybrid teaching model with principles based on TGfU and SEM seems to be an appropriate approach to enhance students' game understanding, decision-making and overall GP (game skills, both technical and tactical). Attributes and principles such as simulating a sports season and student-centered learning situations that consider individual needs, seems to be important to develop students' awareness of attributing meaning to their actions, resulting in improved GP. The findings could be useful to teachers, coaches and researchers contributing to the development of teaching strategies to empower the PE classes.
- Identifying Optimal Pitch Training Load in Elite Soccer PlayersPublication . Titton, Adriano; França, Elias; Branquinho, Luís; Barros, Luís Fernando Leite; Campos, Pedro; Marques, Felipe O.; Glória, Igor Phillip dos Santos; Caperuto, Erico Chagas; Hirota, Vinicius Barroso; Teixeira, José Eduardo; Valente, Nelson; Forte, Pedro; Ferraz, Ricardo; Thomatieli-Santos, Ronaldo Vagner; Teoldo, IsraelThere are no data in the literature regarding the optimal pitch training load (PTL) for elite soccer teams during congested seasons. This study had three goals: (1) identify whether there is an adaptation in match physical performance (MPP) in response to PTL throughout a congested season in elite soccer players; (2) identify whether MPP adaptation is specific to the coach’s PTL philosophy; and (3) identify the optimal PTL for MPP during a congested season. Over two seasons, we collected data from 11,658 PTL sessions and 3068 MPP data from 54 elite male soccer players. The PTL sessions were clustered in weekly training blocks and paired with MPP for statistical and machine learning analysis. Over the season, MPP increased in the mid-season and this trend decreased during the end-season. Also, MPP reflected the coach’s PTL philosophy. Further, using a machine learning (k-means) approach, we identified three different PTLs (and classified them as low-, medium-, and high-load PTL blocks). The high-load PTL block was associated with a higher MPP, while the lower PTL was associated with a lower MPP. PTL is closely related to MPP, and this change also reflects the coach’s PTL philosophy. Here, we report an optimal PTL that could be useful for soccer teams playing a congested season.
- The Effect of Different Motocross Circuit Typologies on Internal Load and External Load Responses in RidersPublication . Rodrigues, Joana; Branquinho, Luís; Forte, Pedro; Valente, Nelson; Sortwell, Andrew; Teixeira, José Eduardo; Ferraz, RicardoSeveral physical and physiological changes occur during a motocross race, mainly due to the type of circuits, and therefore the impact of different types of circuits on training load responses continues to need to be fully clarified. Objective: The main aim of the present study was to compare the internal load and external load responses of motocross riders from different classes and on circuits of different types. Method: A quasi experimental design research was used in the study.The sample consisted of 10 motocross riders (28.10 ± 7.53 years; 74.60 ± 9.70 kg; 176.50 ± 7.18 cm; 23.88 ± 2.18 BMI), male., distributed by the Mx Elite and Mx Hobby categories. The pilots were evaluated before and after the race in relation to indicators of external load (accelerations and decelerations, maximum speed and average speed and impacts) and internal load (Heart rate, blood lactate and rating of perceived exertion) on two circuits of different types. Results: There was a trend towards higher internal load responses in the Mx Hobby class compared to the Mx Elite class (p ≤ 0.05), regardless of the circuit. Regarding external load responses, the Mx Hobby class has a tendency towards higher maximum and average speeds, while the Mx Elite class presents the same tendency for accelerations and decelerations. Conclusions: Different circuit types appear to influence pilots’ internal load and external load responses.
- Tracking the Prevalence of Obesity in Portuguese School-Aged Children: What Future to Expect?Publication . Valente, Nelson; Forte, Pedro; Teixeira, José Eduardo; Afonso, Pedro; Ferreira, Sérgio; Marinho, D.A.; Mendes, Pedro Duarte; Ferraz, Ricardo; Branquinho, LuísChildhood obesity presents a significant public health concern globally, with implications for cardiovascular health and metabolic syndrome. In Portugal, approximately 31.6% of children are affected, highlighting the urgency for intervention strategies. This study aimed to assess the prevalence of overweight and obesity in Portuguese school-aged children, with a focus on sex and age differences. Methods: Anthropometric measurements were conducted on 1564 children aged 6–10 years, including weight, height, and skinfold thickness. Body Mass Index (BMI) and the percentage of body fat were calculated using established methods. Results: The results revealed significant differences in BMI (≤0.001) and body fat percentage (≤0.001) among different BMI categories, with a notable prevalence of overweight and obesity, particularly among boys. A total of 37% of the studied population is overweight or obese, among which 40.1% and 33.9% are boys and girls, respectively. Conclusions: This study highlights statistically significant differences in BMI and body fat percentage for both sexes in different BMI categories. A large proportion of the population is overweight or obese, with a greater prevalence in boys. In short, childhood obesity has a negative impact on body composition and is associated with significant differences in anthropometric parameters, emphasizing the importance of preventative and intervention strategies to address this health problem.