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Javier Sánchez-Sánchez
School of Sport and Science, European University of Madrid, 28670 Madrid, Spain

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Journal article
Published: 19 August 2021 in Sensors
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The aim of this study was to characterise all the goal scoring patterns during open play (elaborate attacks versus counterattacks) related to zone pitch division and the number of players involved in the 2018 FIFA World Cup in Russia. An Iterative Dichotomiser 3 (ID3) decision tree algorithm was used to classify all the goal scoring patterns (94 goals in 64 matches). The results did not show statistical differences between the type of scoring goal during the 2018 FIFA World Cup (p > 0.05; ES = Moderate). According to the result of the patterns of how the goals were achieved, an ID3 algorithm decision tree with seven classification decision nodes was calculated. Consequently, this study may aid national team coaches for the next World Cup to establish notational analyses and spatial-temporal relations to understand how scoring patterns during open play are related to zone pitch division and the number of players involved.

ACS Style

Joaquin Cerda; Javier Sanchez-Sanchez; David Viejo-Romero; Luis Jimenez-Linares; Jesus Vicente Gimenez; Jorge Garcia-Unanue; Jose Luis Felipe. Characterisation of Goal Scoring Patterns during Open Play Related to Zone Pitch Division and Number of Players Involved in the 2018 FIFA World Cup. Sensors 2021, 21, 5601 .

AMA Style

Joaquin Cerda, Javier Sanchez-Sanchez, David Viejo-Romero, Luis Jimenez-Linares, Jesus Vicente Gimenez, Jorge Garcia-Unanue, Jose Luis Felipe. Characterisation of Goal Scoring Patterns during Open Play Related to Zone Pitch Division and Number of Players Involved in the 2018 FIFA World Cup. Sensors. 2021; 21 (16):5601.

Chicago/Turabian Style

Joaquin Cerda; Javier Sanchez-Sanchez; David Viejo-Romero; Luis Jimenez-Linares; Jesus Vicente Gimenez; Jorge Garcia-Unanue; Jose Luis Felipe. 2021. "Characterisation of Goal Scoring Patterns during Open Play Related to Zone Pitch Division and Number of Players Involved in the 2018 FIFA World Cup." Sensors 21, no. 16: 5601.

Review
Published: 26 July 2021 in Nutrients
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Dietary patterns, exercise, sport, and physical activity have been shown to improve body composition in children. This systematic review with meta-analysis analyzed the effects of practicing football on body composition (fat mass, lean body mass, and bone mineral content) in children. An initial search in PubMed, Web of Science, and SPORTDiscus was carried out in April 2021 to identify relevant articles. Inclusion criteria required children up to 12 years of age with a minimum football intervention duration of 10 weeks. Methodological quality of the articles was evaluated using the PEDro scale. Between the 1803 articles originally founded, only 14 articles were included in the meta-analysis. A total of 1643 subjects between the 14 studies were identified. The review and meta-analysis were conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and used Review Manager and Full Meta-Analysis software. The results between the control and experimental groups showed significantly better lean body mass and fat mass values in the experimental group (p< 0.05). Football practice was positively associated with increases in lean body mass (mean difference of 1.55; 95% CI, 0.96, 2.15), decreases in fat mass (mean difference of −0.81; 95% CI, −1.49, −0.13), and increases in whole body bone mineral content (mean difference of 117.68; 95% CI, 83.69, 151.67). In conclusion, the results of this systematic review with meta-analysis suggest that football positively affects body composition in children. However, further research is needed to confirm the results for bone mineral content.

ACS Style

Antonio Hernandez-Martin; Jorge Garcia-Unanue; Alejandro Martínez-Rodríguez; Samuel Manzano-Carrasco; Jose Felipe; Maria Carvalho; Leonor Gallardo; Javier Sanchez-Sanchez. The Effects of Football Practice on Nutritional Status and Body Composition in Children: A Systematic Review and Meta-Analysis. Nutrients 2021, 13, 2562 .

AMA Style

Antonio Hernandez-Martin, Jorge Garcia-Unanue, Alejandro Martínez-Rodríguez, Samuel Manzano-Carrasco, Jose Felipe, Maria Carvalho, Leonor Gallardo, Javier Sanchez-Sanchez. The Effects of Football Practice on Nutritional Status and Body Composition in Children: A Systematic Review and Meta-Analysis. Nutrients. 2021; 13 (8):2562.

Chicago/Turabian Style

Antonio Hernandez-Martin; Jorge Garcia-Unanue; Alejandro Martínez-Rodríguez; Samuel Manzano-Carrasco; Jose Felipe; Maria Carvalho; Leonor Gallardo; Javier Sanchez-Sanchez. 2021. "The Effects of Football Practice on Nutritional Status and Body Composition in Children: A Systematic Review and Meta-Analysis." Nutrients 13, no. 8: 2562.

Journal article
Published: 02 June 2021 in Nutrients
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(1) Background: Beach handball is a relatively new type of sport, derived from team handball. The purpose of the study was to evaluate the physical fitness of elite players of this sport by studying some variables of sports performance, including strength, endurance and power, and dietary habits, and to assess bone ultrasonographic variables. (2) Methods: 33 beach handball players have participated in this research; 18 juniors (age: 16.7 ± 0.50) and 15 seniors (age: 24.8 ± 4.71). The athletes’ strength was evaluated using the Handgrip Test on the dominant hand, the height of jump was evaluated by a counter-jump on a contact platform, and velocity, agility, and resistance by the Yo-Yo test. The broadband ultrasound attenuation (BUA) and the sound of speed (SOS) through the calcaneus were also measured. The Mediterranean diet adherence (KIDMED) was the questionnaire used to evaluate eating habits. In the statistical analysis, descriptions and correlations were made between the study variables. (3) Results: Both in the case of the dynamometric hand strength test (p< 0.05) and in the lower extremity power test (p< 0.01), senior players presented significantly higher values compared to junior players (35.1 ± 3.84 vs. 31.8 ± 3.37 and 35.1 ± 6.89 vs. 28.5 ± 5.69 with the dynamometry and Abalakov tests, respectively). However, no differences were observed in the variables by playing position. Significant correlations between different variables have been established, highlighting negative correlations between BMI and weight with the Abalakov Jump Test and positive correlations between Yo-Yo and BUA, and, between BMI and BUA. (4) Conclusions: Older and trained players are in better physical fitness; high weight and BMI have a negative influence on power, agility, speed, and endurance. In general, adherence to the Mediterranean diet is moderate and it seems evident that there is a beneficial influence of beach handball on bone condition, as measured by ultrasound. However future research should be carried on, including dual-energy x-ray absorptiometry assessments and food intake registers for a whole week.

ACS Style

Alejandro Martínez-Rodríguez; Javier Sánchez-Sánchez; María Martínez-Olcina; Manuel Vicente-Martínez; Laura Miralles-Amorós; Juan Sánchez-Sáez. Study of Physical Fitness, Bone Quality, and Mediterranean Diet Adherence in Professional Female Beach Handball Players: Cross-Sectional Study. Nutrients 2021, 13, 1911 .

AMA Style

Alejandro Martínez-Rodríguez, Javier Sánchez-Sánchez, María Martínez-Olcina, Manuel Vicente-Martínez, Laura Miralles-Amorós, Juan Sánchez-Sáez. Study of Physical Fitness, Bone Quality, and Mediterranean Diet Adherence in Professional Female Beach Handball Players: Cross-Sectional Study. Nutrients. 2021; 13 (6):1911.

Chicago/Turabian Style

Alejandro Martínez-Rodríguez; Javier Sánchez-Sánchez; María Martínez-Olcina; Manuel Vicente-Martínez; Laura Miralles-Amorós; Juan Sánchez-Sáez. 2021. "Study of Physical Fitness, Bone Quality, and Mediterranean Diet Adherence in Professional Female Beach Handball Players: Cross-Sectional Study." Nutrients 13, no. 6: 1911.

Journal article
Published: 27 May 2021 in Nutrients
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Background: Beach handball is a recent team sport characterized by defensive and offensive actions on a sand surface. Scientific evidence has shown that body composition is fundamental in sports performance. The main objective of this study was to know the body composition, anthropometric characteristics, and bone mineral density of elite beach handball players. Furthermore, another purpose was to analyze the differences between categories (junior and senior) and playing position. Methods: A descriptive, cross-sectional study of 36 male players (18 juniors and 18 seniors) of the Spanish National Beach Handball Team was conducted. Full profile anthropometry and calcaneal ultrasound measurements were used. Results: Significant differences between categories (p< 0.05) were found in: height, body mass, arm span, BMI, muscle mass, fat mass, bone mass, skinfolds, and body perimeters. The somatotype changes depending on the playing position. Bone mineral density of the players was adequate. No significant differences were found by playing position. Conclusions: Senior players had a better body composition due to the presence of less fat mass than junior players. This study provides reference values of elite junior and senior beach handball players and by playing positions. This data is useful for the identification of talents and players who should be trained to improve their body composition.

ACS Style

Alejandro Martínez-Rodríguez; Javier Sánchez-Sánchez; Manuel Vicente-Martínez; María Martínez-Olcina; Laura Miralles-Amorós; Juan Sánchez-Sáez. Anthropometric Dimensions and Bone Quality in International Male Beach Handball Players: Junior vs. Senior Comparison. Nutrients 2021, 13, 1817 .

AMA Style

Alejandro Martínez-Rodríguez, Javier Sánchez-Sánchez, Manuel Vicente-Martínez, María Martínez-Olcina, Laura Miralles-Amorós, Juan Sánchez-Sáez. Anthropometric Dimensions and Bone Quality in International Male Beach Handball Players: Junior vs. Senior Comparison. Nutrients. 2021; 13 (6):1817.

Chicago/Turabian Style

Alejandro Martínez-Rodríguez; Javier Sánchez-Sánchez; Manuel Vicente-Martínez; María Martínez-Olcina; Laura Miralles-Amorós; Juan Sánchez-Sáez. 2021. "Anthropometric Dimensions and Bone Quality in International Male Beach Handball Players: Junior vs. Senior Comparison." Nutrients 13, no. 6: 1817.

Journal article
Published: 22 March 2021 in Children
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(1) Background: The preoccupation with the increasing appearance of eating disorders (ED) in athletes continues to grow, especially in athletes who practice team sports. ED severely affects the eating habits of the athletes, who tend to use unhealthy approaches to control their body weight. The development of nutritional education and early interventions by training staff is essential, and these factors are widely perceived as beneficial in sports medicine. This study evaluates the frequency at which beach handball (BH) players develop ED, also comparing the differences by sex and age (junior: adolescents vs. senior: young adults). In addition, the relation between body composition variables and ED was studied. (2) Methods: A descriptive and cross-sectional study was carried out in 69 top elite handball players (36 males and 33 females) from the Spanish National BH Team; who were separated by age (junior: adolescents and senior: young adults). The athletes completed the Eating Attitudes Test in its 26 item version (EAT-26). (3) Results: The prevalence of ED indicated that 11% of females had a high possibility of developing an ED, and 3% of males. Regarding the EAT-26 total score and subscales, no significant differences were found between female and male participants, or between the junior and senior categories. The correlations showed an association between body composition, in terms of body mass index, and the EAT-26 total score in both males and females. In the case of males, the correlation was negative. (4) Conclusions: Although there are no significant differences between sex or categories, it has been found that elite athletes are a population that is at high risk of developing ED.

ACS Style

Alejandro Martínez-Rodríguez; Manuel Vicente-Martínez; Javier Sánchez-Sánchez; Laura Miralles-Amorós; María Martínez-Olcina; Juan Sánchez-Sáez. Eating Disorders in Top Elite Beach Handball Players: Cross Sectional Study. Children 2021, 8, 245 .

AMA Style

Alejandro Martínez-Rodríguez, Manuel Vicente-Martínez, Javier Sánchez-Sánchez, Laura Miralles-Amorós, María Martínez-Olcina, Juan Sánchez-Sáez. Eating Disorders in Top Elite Beach Handball Players: Cross Sectional Study. Children. 2021; 8 (3):245.

Chicago/Turabian Style

Alejandro Martínez-Rodríguez; Manuel Vicente-Martínez; Javier Sánchez-Sánchez; Laura Miralles-Amorós; María Martínez-Olcina; Juan Sánchez-Sáez. 2021. "Eating Disorders in Top Elite Beach Handball Players: Cross Sectional Study." Children 8, no. 3: 245.

Journal article
Published: 10 March 2021 in International Journal of Environmental Research and Public Health
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Background: Beach handball (BH) is a sport in which sporting performance is influenced, together with team interaction, by individual performance in terms of strength. Body composition is one of the main factors for sports performance and eating habits can condition this variable. The Mediterranean diet (MD) can significantly reduce the risk of mortality or cardiovascular disease. In addition, the Spanish Ministry of Agriculture, Food and Environment carries out different campaigns to promote it among young athletes, establishing it as a suitable diet for sports. Objectives: The main aims of the study are to assess body composition, physical activity and adherence to the MD of beach handball players. It also aims to evaluate age group differences in male and female players, as well as studying the possible relationship between MD, body composition and performance variables. Methods: A total of 59 Spanish BH players were recruited in the national championship of BH in the province of Alicante. Thirty-eight male (14 junior; 17.0 ± 0.1 years and 24 seniors; 25.5 ± 4.7 years) and twenty-one female (7 junior; 16.1 ± 1.46 years and 14 seniors; 23.2 ± 2.0 years) BH players participated in this study. The questionnaire to evaluate eating habits was Mediterranean diet adherence (KIDMED). Body composition was measured with electrical bioimpedance. Strength was evaluated by means of a maximum isometric handgrip test of the dominant hand with handgrip and height of jump by counter-jump on contact platform. In the statistical analysis, descriptions and correlations between the study variables were made. Results: In females, when the adherence to the MD is lower, the weight is higher, the lean body mass is lower and worse results are observed in performance tests. As for males, there are differences in weight and lean body mass according to category. Conclusions: Adequate eating habits are related to the weight of beach handball athletes. In addition, specifically with junior players, it has been observed that adherence to the MD correlates with weight.

ACS Style

Alejandro Martínez-Rodríguez; María Martínez-Olcina; María Hernández-García; Jacobo Rubio-Arias; Javier Sánchez-Sánchez; Daniel Lara-Cobos; Manuel Vicente-Martínez; Maria Carvalho; Juan Sánchez-Sáez. Mediterranean Diet Adherence, Body Composition and Performance in Beach Handball Players: A Cross Sectional Study. International Journal of Environmental Research and Public Health 2021, 18, 2837 .

AMA Style

Alejandro Martínez-Rodríguez, María Martínez-Olcina, María Hernández-García, Jacobo Rubio-Arias, Javier Sánchez-Sánchez, Daniel Lara-Cobos, Manuel Vicente-Martínez, Maria Carvalho, Juan Sánchez-Sáez. Mediterranean Diet Adherence, Body Composition and Performance in Beach Handball Players: A Cross Sectional Study. International Journal of Environmental Research and Public Health. 2021; 18 (6):2837.

Chicago/Turabian Style

Alejandro Martínez-Rodríguez; María Martínez-Olcina; María Hernández-García; Jacobo Rubio-Arias; Javier Sánchez-Sánchez; Daniel Lara-Cobos; Manuel Vicente-Martínez; Maria Carvalho; Juan Sánchez-Sáez. 2021. "Mediterranean Diet Adherence, Body Composition and Performance in Beach Handball Players: A Cross Sectional Study." International Journal of Environmental Research and Public Health 18, no. 6: 2837.

Journal article
Published: 03 February 2021 in International Journal of Environmental Research and Public Health
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Monitoring fatigue and performance is important for adjusting training loads in soccer. Therefore, knowing the status of the player when applying a training stimulus is key to optimizing the players’ development. This study aims to evaluate the interaction between internal and external load, during training and matches, in an elite youth soccer team. Methods: seventeen youth players of the highest Spanish category were monitored with GPS devices during training and matches, as well as recording their nocturnal heart rate variability (HRV). We employed a linear mixed model to assess the physical demands between training and matches, and to compare the HRV variables. Results: a higher total distance (+2993.35–5746.56 m; ES = 1.4), distance at high intensity (+641.24–1907 m; ES = 1.5), sprint distance (+350.46–795.05 m; ES = 2.1), number of sprints (+18.38–41.58; ES = 1.9), and number of repeated sprints (+5.91–15.30; ES = 1.7) (all p < 0.001), but not in the number of accelerations, were reported during the matches when compared to the training sessions during the 11 weeks. The analysis of the HRV variables showed no significant differences between the accumulated values during a training week, providing similar results pre-match or post-match (p > 0.05). The LF/HFRATIO showed a negative influence on the total distance ran, distance at high intensity, distance in sprint, number of sprints, and repeated sprint. RRMEAN was positively related to the sprint number. Conclusion: the results of the present study suggest that nocturnal HRV variables are not different between pre-match and post-match. Furthermore, it suggests that LF/HFRATIO and RRMEAN during pre-match can determine the external load that the player will be able to complete during the match.

ACS Style

Javier Sánchez-Sánchez; Javier Botella; Jose Felipe Hernández; Manuel León; Víctor Paredes-Hernández; Enrique Colino; Leonor Gallardo; Jorge García-Unanue. Heart Rate Variability and Physical Demands of In-Season Youth Elite Soccer Players. International Journal of Environmental Research and Public Health 2021, 18, 1391 .

AMA Style

Javier Sánchez-Sánchez, Javier Botella, Jose Felipe Hernández, Manuel León, Víctor Paredes-Hernández, Enrique Colino, Leonor Gallardo, Jorge García-Unanue. Heart Rate Variability and Physical Demands of In-Season Youth Elite Soccer Players. International Journal of Environmental Research and Public Health. 2021; 18 (4):1391.

Chicago/Turabian Style

Javier Sánchez-Sánchez; Javier Botella; Jose Felipe Hernández; Manuel León; Víctor Paredes-Hernández; Enrique Colino; Leonor Gallardo; Jorge García-Unanue. 2021. "Heart Rate Variability and Physical Demands of In-Season Youth Elite Soccer Players." International Journal of Environmental Research and Public Health 18, no. 4: 1391.

Journal article
Published: 27 January 2021 in Sensors
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This cross-sectional study aims to analyze the physical demands of elite beach handball players during an official competition. Nine elite female (mean age: 24.6 ± 4.0 years; body weight: 62.4 ± 4.6 kg; body height: 1.68 ± 0.059 m; training experience: 5 years; training: 6 h/week) beach handball players of the Spanish National Team were recruited for this study. A Global Positioning System was incorporated on each player’s back to analyze their movement patterns. Speed and distance were recorded at a sampling frequency of 15 Hz, whereas acceleration was recorded at 100 Hz by means of a built-in triaxial accelerometer. The main finding of the study is that 53% of the distance travelled is done at speeds between 1.5 and 5 km/h and 30% of the distance is between 9 and 13 km/h (83% of the total distance covered), which shows the intermittent efforts that beach handball involves at high intensity, as reflected in the analysis of the internal load with 62.82 ± 14.73% of the game time above 80% of the maximum heart rate. These data help to orientate training objectives to the physical demands required by the competition in order to optimize the players’ performance.

ACS Style

Juan Sánchez-Sáez; Javier Sánchez-Sánchez; Alejandro Martínez-Rodríguez; José Felipe; Jorge García-Unanue; Daniel Lara-Cobos. Global Positioning System Analysis of Physical Demands in Elite Women’s Beach Handball Players in an Official Spanish Championship. Sensors 2021, 21, 850 .

AMA Style

Juan Sánchez-Sáez, Javier Sánchez-Sánchez, Alejandro Martínez-Rodríguez, José Felipe, Jorge García-Unanue, Daniel Lara-Cobos. Global Positioning System Analysis of Physical Demands in Elite Women’s Beach Handball Players in an Official Spanish Championship. Sensors. 2021; 21 (3):850.

Chicago/Turabian Style

Juan Sánchez-Sáez; Javier Sánchez-Sánchez; Alejandro Martínez-Rodríguez; José Felipe; Jorge García-Unanue; Daniel Lara-Cobos. 2021. "Global Positioning System Analysis of Physical Demands in Elite Women’s Beach Handball Players in an Official Spanish Championship." Sensors 21, no. 3: 850.

Original research article
Published: 22 January 2021 in Frontiers in Psychology
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In futsal there are two referees on the playing court and their capacity to respond to physical and physiological demands imposed during the game is essential for the success. The futsal characteristics such as size pitch, referees position and rules of games or type of league could impose specific physical efforts probably. The aim of this study were to analyze the physical demands of eight elite referees (age 40 ± 3.43 years; height 1.80 ± 0.03 m; weight 72.84 ± 4.01 kg) from seven matches of Spanish Futsal Cup 2020. The physical activity of each referee during the match was monitored with a Local Positioning System, which was installed on futsal pitch where the matches were played. The data differences were evaluated as Paired-Samples T-Test procedure. The results revealed a similar total distance between halves (2888.39 vs. 2831.51 m). The zone 3 distance (15.1–18 km⋅h–1) showed a significative decrease (p < 0.05) during the match in comparison to the first and second halves (−24.48 m; CI95%: −9.54 to −39.42; ES: 0.56). The number of high-intensity acceleration (−10.29; CI95%; 3.71–16.86; ES: 0.92) and deceleration (−24.86; CI95%; 11.59–38.12; ES: 0.99) decreased in the second half of the match (p < 0.05). Therefore, the use of the tracking device to monitoring physical performance provides knowledge of the specific activity profile from futsal referees. This information to can be useful to design more accurate the training programs.

ACS Style

Carlos Serrano; Javier Sánchez-Sánchez; Jose Luis Felipe; Enrique Hernando; Leonor Gallardo; Jorge Garcia-Unanue. Physical Demands in Elite Futsal Referees During Spanish Futsal Cup. Frontiers in Psychology 2021, 12, 1 .

AMA Style

Carlos Serrano, Javier Sánchez-Sánchez, Jose Luis Felipe, Enrique Hernando, Leonor Gallardo, Jorge Garcia-Unanue. Physical Demands in Elite Futsal Referees During Spanish Futsal Cup. Frontiers in Psychology. 2021; 12 ():1.

Chicago/Turabian Style

Carlos Serrano; Javier Sánchez-Sánchez; Jose Luis Felipe; Enrique Hernando; Leonor Gallardo; Jorge Garcia-Unanue. 2021. "Physical Demands in Elite Futsal Referees During Spanish Futsal Cup." Frontiers in Psychology 12, no. : 1.

Journal article
Published: 01 January 2021 in Cuadernos de Psicología del Deporte
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Las instalaciones deportivas escolares son el marco idóneo donde los alumnos deben de adquirir los hábitos de actividad física, estableciendo el Real Decreto 132/2010, que estas deben de cumplir con las condiciones de seguridad y accesibilidad que determine la legislación vigente. No obstante, varias investigaciones previas alertan del incumplimiento de dichos requisitos, siendo el objetivo del presente estudio el análisis de aquellos relacionados con la seguridad y accesibilidad de los espacios deportivos utilizados para impartir las clases de Educación Física en la etapa de Educación Secundaria Obligatoria (ESO). La investigación se llevó a cabo en n=45 Institutos de ESO de titularidad pública de la Región de Murcia, a través de una observación in situ con dos listas de control ad hoc en función del espacio a analizar, de 71 ítems para espacios cubiertos y 36 ítems para espacios al aire libre, de respuesta dicotómica (SI/NO), elaboradas a partir de la normativa y legislación vigente. Los resultados muestran un porcentaje medio de cumplimiento del 63,05±7,09 en espacios cubiertos (n=51) y del 61,52±8,70 en espacios al aire libre (n=93) detectándose diferencias estadísticamente significativas en los cubiertos (p School sports facilities are the ideal framework where students must acquire physical activity habits, establishing Royal Decree 132/2010, that they must comply with the safety and accessibility conditions determined by current legislation. However, several previous research warn of non-compliance with these requirements, being the objective of this study the analysis of those related to the safety and accessibility of the sports facilities used in Physical Education classes at the compulsory secondary education stage. This research was carried out in n=45 compulsory secondary education schools of public ownership of the Region of Murcia, through an in situ observation with two ad hoc checklists according to the space to be analyzed, of 71 items for indoor facilities and 36 items for outdoor ones, of dichotomous response (YES/NO), developed from the current regulations and legislation. The results show an average percentage of compliance of 63.05±7.09 in indoor facilities (n=51) and 61.52±8.70 in outdoor spaces (n=93) detecting statistically significant differences in the indoor ones (p Le strutture sportive scolastiche sono il quadro ideale in cui gli studenti devono acquisire abitudini di attività fisica, stabilendo il regio decreto 132/2010, che deve rispettare le condizioni di sicurezza e accessibilità stabilite dalla normativa vigente. Tuttavia, diverse indagini precedenti avvertono della violazione di questi requisiti, essendo l'obiettivo del presente studio l'analisi di quelli relativi alla sicurezza e all'accessibilità degli spazi sportivi utilizzati per insegnare le lezioni di educazione fisica nell'istruzione secondaria obbligatoria (ESO). L'indagine è stata condotta in n=45 istituti ESO di proprietà pubblica della regione di Murcia, attraverso un'osservazione sistematica con due liste di controllo ad hoc a seconda dello spazio da analizzare, di 71 articoli per spazi coperti e 36 articoli per spazi esterni, risposta dicotomica (SÌ/NO), preparati dalle normative e dalla legislazione vigenti. I risultati mostrano una percentuale media di conformità di 63,05±7,09 negli spazi coperti (n=51) e 61,52±8,70 negli spazi esterni (n=93), rilevando differenze statisticamente significative negli spazi coperti (p As instalações esportivas escolares são a estrutura ideal onde os estudantes devem adquirir hábitos de atividade física, estabelecendo o Real Decreto 132/2010, que deve obedecer às condições de segurança e acessibilidade determinadas pela legislação vigente. No entanto, várias investigações anteriores alertam para a violação desses requisitos, sendo o objetivo do presente estudo a análise daqueles relacionados à segurança e acessibilidade dos espaços esportivos utilizados para o ensino das aulas de Educação Física no Ensino Médio obrigatório (ESO). A investigação foi realizada em n=45 institutos ESO de propriedade pública da Região de Múrcia, através de uma observação in situ com duas listas de verificação ad hoc, dependendo do espaço a ser analisado, de 71 itens para espaços cobertos e 36 itens para espaços ao ar livre, resposta dicotômica (SIM/NÃO), elaborado a partir da legislação e regulamentação vigentes. Os resultados mostram uma porcentagem média de conformidade de 63,05±7,09 nos espaços cobertos (n=51) e 61,52±8,70 nos espaços ao ar livre (n=93), sendo detectadas diferenças estatisticamente significantes (p

ACS Style

María José Maciá Andreu; Javier Sánchez-Sánchez; José Antonio García Córdoba; Ana María Gallardo Guerrero. Análisis de la seguridad y accesibilidad de los espacios deportivos en Educación Secundaria Obligatoria. Cuadernos de Psicología del Deporte 2021, 21, 242 -257.

AMA Style

María José Maciá Andreu, Javier Sánchez-Sánchez, José Antonio García Córdoba, Ana María Gallardo Guerrero. Análisis de la seguridad y accesibilidad de los espacios deportivos en Educación Secundaria Obligatoria. Cuadernos de Psicología del Deporte. 2021; 21 (1):242-257.

Chicago/Turabian Style

María José Maciá Andreu; Javier Sánchez-Sánchez; José Antonio García Córdoba; Ana María Gallardo Guerrero. 2021. "Análisis de la seguridad y accesibilidad de los espacios deportivos en Educación Secundaria Obligatoria." Cuadernos de Psicología del Deporte 21, no. 1: 242-257.

Review
Published: 17 December 2020 in International Journal of Environmental Research and Public Health
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The aim of this study was to analyze the influence of natural turf, artificial turf, and sand on sprint performance in different sports and to determine how the sport surface affects sprint performance. A systematic search was conducted in Pubmed, Web of Sciences, and SPORTDiscus databases. Out of 5644 studies, 11 studies were included in the meta-analysis. The studies were very heterogeneous, as they examined different structural characteristics or quality parameters. The studies on natural turf and sand showed significant improvements on sprint speed during training. On the other hand, the analysis of fatigue did not reveal significant differences in the deterioration of sprint speed on both natural and artificial turf. Significance was set at p < 0.05. In conclusion, although lower performance in sprint was reported on sand, further studies are needed to explain the differences in sprint on natural and artificial turf.

ACS Style

Javier Sanchez-Sanchez; Alejandro Martinez-Rodriguez; Jose Luis Felipe; Antonio Hernandez-Martin; Esther Ubago-Guisado; Jens Bangsbo; Leonor Gallardo; Jorge Garcia-Unanue. Effect of Natural Turf, Artificial Turf, and Sand Surfaces on Sprint Performance. A Systematic Review and Meta-Analysis. International Journal of Environmental Research and Public Health 2020, 17, 9478 .

AMA Style

Javier Sanchez-Sanchez, Alejandro Martinez-Rodriguez, Jose Luis Felipe, Antonio Hernandez-Martin, Esther Ubago-Guisado, Jens Bangsbo, Leonor Gallardo, Jorge Garcia-Unanue. Effect of Natural Turf, Artificial Turf, and Sand Surfaces on Sprint Performance. A Systematic Review and Meta-Analysis. International Journal of Environmental Research and Public Health. 2020; 17 (24):9478.

Chicago/Turabian Style

Javier Sanchez-Sanchez; Alejandro Martinez-Rodriguez; Jose Luis Felipe; Antonio Hernandez-Martin; Esther Ubago-Guisado; Jens Bangsbo; Leonor Gallardo; Jorge Garcia-Unanue. 2020. "Effect of Natural Turf, Artificial Turf, and Sand Surfaces on Sprint Performance. A Systematic Review and Meta-Analysis." International Journal of Environmental Research and Public Health 17, no. 24: 9478.

Journal article
Published: 06 December 2020 in Sensors
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The aim of this study was to analyse the physical demands of U10 players in a 7-a-side-soccer tournament based on the playing positions in 6 consecutive matches by global positioning systems (GPS). Variables of total distance, relative distance in different speed zones, maximum speed, time interval between accelerations, maximum speed acceleration, maximum acceleration, acceleration distance and the number of high-intensity accelerations were analysed. Differences between playing positions were found in the total distance covered by the midfielders. They covered higher total distances than the defenders (+1167 m; 95% CI: 411 to 1922 m; effect size (ES) = 1.41; p < 0.05) and forwards (+1388 m; CI 95%: 712 a 2063 m; TE = 0.85; p < 0.05). The total covered distance increased in the final rounds with respect to the group stage (p < 0.05; ES: 0.44 to 1.62), and high-intensity actions, such as the number of accelerations, were greater in the final rounds compared to the group stage (p < 0.05; ES: 0.44 to 1.62). The physical performance of young football players in a tournament with consecutive matches on a 40 × 62 m football field on the same day is influenced by the playing position and dependent on the level difference between opponents.

ACS Style

Antonio Hernandez-Martin; Javier Sanchez-Sanchez; Jose Luis Felipe; Samuel Manzano-Carrasco; Carlos Majano; Leonor Gallardo; Jorge Garcia-Unanue. Physical Demands of U10 Players in a 7-a-Side Soccer Tournament Depending on the Playing Position and Level of Opponents in Consecutive Matches Using Global Positioning Systems (GPS). Sensors 2020, 20, 6968 .

AMA Style

Antonio Hernandez-Martin, Javier Sanchez-Sanchez, Jose Luis Felipe, Samuel Manzano-Carrasco, Carlos Majano, Leonor Gallardo, Jorge Garcia-Unanue. Physical Demands of U10 Players in a 7-a-Side Soccer Tournament Depending on the Playing Position and Level of Opponents in Consecutive Matches Using Global Positioning Systems (GPS). Sensors. 2020; 20 (23):6968.

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Antonio Hernandez-Martin; Javier Sanchez-Sanchez; Jose Luis Felipe; Samuel Manzano-Carrasco; Carlos Majano; Leonor Gallardo; Jorge Garcia-Unanue. 2020. "Physical Demands of U10 Players in a 7-a-Side Soccer Tournament Depending on the Playing Position and Level of Opponents in Consecutive Matches Using Global Positioning Systems (GPS)." Sensors 20, no. 23: 6968.

Journal article
Published: 28 August 2020 in Sensors
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The aim of this study was to analyze the influence of the match half and the playing position on physical requirements in the Spanish Professional Futsal League players during official games. The external load from distance, speed, acceleration and deceleration variables were obtained from fourteen elite futsal players during 10 official matches of the 2019–2020 season using a Local Positioning System with ultra-wideband technology installed on the futsal pitch. The results revealed similar results from physical requirements between first and second half (p > 0.05). Wingers demonstrated greater high-speed running distance (+4.04 m·min−1; CI95%: 0.35 to 7.72; ES: 0.87) than pivots (p > 0.05). There were a high number of accelerations (7.42–9.41 n·min−1) and decelerations (7.37–9.12 n·min−1) per minute in all player positions. The principal finding of the current manuscript did not evidence differences in the physical performance of players between the first and second half. The physical requirements varied among pivots and wingers regarding high-intensity actions. These outcomes add new contributions to the understanding of futsal physical demands.

ACS Style

Carlos Serrano; Jose Luis Felipe; Jorge Garcia-Unanue; Enrique Ibañez; Enrique Hernando; Leonor Gallardo; Javier Sanchez-Sanchez. Local Positioning System Analysis of Physical Demands during Official Matches in the Spanish Futsal League. Sensors 2020, 20, 4860 .

AMA Style

Carlos Serrano, Jose Luis Felipe, Jorge Garcia-Unanue, Enrique Ibañez, Enrique Hernando, Leonor Gallardo, Javier Sanchez-Sanchez. Local Positioning System Analysis of Physical Demands during Official Matches in the Spanish Futsal League. Sensors. 2020; 20 (17):4860.

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Carlos Serrano; Jose Luis Felipe; Jorge Garcia-Unanue; Enrique Ibañez; Enrique Hernando; Leonor Gallardo; Javier Sanchez-Sanchez. 2020. "Local Positioning System Analysis of Physical Demands during Official Matches in the Spanish Futsal League." Sensors 20, no. 17: 4860.

Journal article
Published: 31 July 2020 in Applied Sciences
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The aim of this study was to analyse different success models and split time on cut-off point values on physical demands to keep category in semi-professional football players. An ad hoc observational controlled study was carried out with a total of ten (840 match data) outfield main players (25.2 ± 6.3 years, 1.79 ± 0.75 m, 74.9 ± 5.8 kg and 16.5 ± 6 years of football experience) and monitored using 15 Hz GPS devices. During 14 official matches from the Spanish division B in the 2016/2017 season, match data were coded considering the situational variable (score) and classified by match results (winning, losing or drawing). The results show significant differences between high-intensity attributes criteria that considered split time in velocity zones of 0–15 min (p = 0.043, ηp2 = 0.065, medium), 30–45 min (p = 0.010, ηp2 = 0.094, medium) and 60–75 min (p = 0.015, ηp2 = 0.086, medium), as well as sprint 60–75 min (p = 0.042, ηp2 = 0.066, medium) and 75–90 min (p = 0.002, ηp2 = 0.129, medium). Decision tree induction was applied to reduce the disparity range of data according to six 15-min intervals and to determine the cut-off point values for every parameter combination. It was possible to establish multivariate models for the main high-intensity actions criteria, allowing the establishment of all rules with their attributes and enabling the detection and visualisation of relationships and the pattern sets of variables for determining success.

ACS Style

Jesus Vicente Gimenez; Luis Jimenez-Linares; Jorge Garcia-Unanue; Javier Sanchez-Sanchez; Leonor Gallardo; Jose Luis Felipe. Analyse Success Model of Split Time and Cut-Off Point Values of Physical Demands to Keep Category in Semi-Professional Football Players. Applied Sciences 2020, 10, 5299 .

AMA Style

Jesus Vicente Gimenez, Luis Jimenez-Linares, Jorge Garcia-Unanue, Javier Sanchez-Sanchez, Leonor Gallardo, Jose Luis Felipe. Analyse Success Model of Split Time and Cut-Off Point Values of Physical Demands to Keep Category in Semi-Professional Football Players. Applied Sciences. 2020; 10 (15):5299.

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Jesus Vicente Gimenez; Luis Jimenez-Linares; Jorge Garcia-Unanue; Javier Sanchez-Sanchez; Leonor Gallardo; Jose Luis Felipe. 2020. "Analyse Success Model of Split Time and Cut-Off Point Values of Physical Demands to Keep Category in Semi-Professional Football Players." Applied Sciences 10, no. 15: 5299.

Journal article
Published: 29 July 2020 in Scientific Reports
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This study aimed to analyse the effect of playing surface temperature on muscular and thermal response to a repeated-sprint ability (RSA) test in football players. Thirty-two male football players (23 ± 5 years; 1.77 ± 0.06 m; 71.2 ± 6.7 kg) from two squads of a third-division football club participated in the study. An RSA test was carried out at a high surface temperature (45.34 ± 2.53 °C) and low surface temperature (27.21 ± 2.17 °C). Before and after this test, the muscular response of the players was assessed through tensiomyography and thermograms. The results revealed that performance in the RSA test particularly increased at a higher surface temperature, especially in the first 5 m of the 30 m sprint test. While a reduction in maximal radial displacement (Dm) in the biceps femoris post-RSA was observed at lower surface temperatures, a higher temperature on the thigh, hamstring and calf was found in the higher surface temperature group. In conclusion, higher surface temperatures had an influence on players’ thermal and tensiomyographic profile and improved performance in their repeated-sprint ability. These results suggest a need for coaches and players to be aware of these parameters to ensure adequate functionality and safety of the playing surface.

ACS Style

Gabriel Calderón-Pellegrino; Leonor Gallardo; Víctor Paredes-Hernández; Jorge Fernando García Unanue; Jesus Vicente Giménez; Enrique Colino; Jose Luis Felipe; Javier Sánchez-Sánchez. Influence of artificial turf temperature on physical performance and muscle contractile properties in football players after a repeated-sprint ability test. Scientific Reports 2020, 10, 12747 .

AMA Style

Gabriel Calderón-Pellegrino, Leonor Gallardo, Víctor Paredes-Hernández, Jorge Fernando García Unanue, Jesus Vicente Giménez, Enrique Colino, Jose Luis Felipe, Javier Sánchez-Sánchez. Influence of artificial turf temperature on physical performance and muscle contractile properties in football players after a repeated-sprint ability test. Scientific Reports. 2020; 10 (1):12747.

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Gabriel Calderón-Pellegrino; Leonor Gallardo; Víctor Paredes-Hernández; Jorge Fernando García Unanue; Jesus Vicente Giménez; Enrique Colino; Jose Luis Felipe; Javier Sánchez-Sánchez. 2020. "Influence of artificial turf temperature on physical performance and muscle contractile properties in football players after a repeated-sprint ability test." Scientific Reports 10, no. 1: 12747.

Journal article
Published: 04 June 2020 in Nutrients
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The aim of this study was to analyze the differences in body composition and physical fitness according to the weight status (normoweight, overweight and obese) and the level of adherence to the Mediterranean diet (MD; low, medium or high), in physically active children and adolescents. Furthermore, this study also analyzed the relationship between body composition and physical fitness with Body Mass Index (BMI), fat mass and the level of adherence to the MD. In total, 1676 participants aged 6–17 from different municipal sports schools participated in this cross-sectional study. Data on adherence to the MD (a KIDMED questionnaire), anthropometric measurements, body composition and physical fitness parameters (the 20-m shuttle run test and muscular strength) were collected. A total of 43.5% of the sample were presented as overweight and obese, and only 35.7% had high or optimal adherence to the MD. The results revealed that a normoweight status was associated with greater cardiorespiratory fitness (p < 0.05; ES: 0.50 to 0.67) and lower-body muscular strength (p < 0.05; ES: 0.58 to 1.10). The overweight group showed more significant results than the other groups in handgrip strength (p < 0.01). Greater adherence to the MD in this population indicated better physical fitness, but only in boys. It is concluded that normoweight status and optimal adherence to the MD in children and adolescents are associated with health benefits, which are significant in the body composition and the effect on physical fitness.

ACS Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Leonor Gallardo; Jorge Garcia-Unanue. Weight Status, Adherence to the Mediterranean Diet, and Physical Fitness in Spanish Children and Adolescents: The Active Health Study. Nutrients 2020, 12, 1680 .

AMA Style

Samuel Manzano-Carrasco, Jose Luis Felipe, Javier Sanchez-Sanchez, Antonio Hernandez-Martin, Leonor Gallardo, Jorge Garcia-Unanue. Weight Status, Adherence to the Mediterranean Diet, and Physical Fitness in Spanish Children and Adolescents: The Active Health Study. Nutrients. 2020; 12 (6):1680.

Chicago/Turabian Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Leonor Gallardo; Jorge Garcia-Unanue. 2020. "Weight Status, Adherence to the Mediterranean Diet, and Physical Fitness in Spanish Children and Adolescents: The Active Health Study." Nutrients 12, no. 6: 1680.

Journal article
Published: 18 May 2020 in Sports
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As most existing studies in youth academies are focused on top players, the objective of this research is to analyze the physical and physiological demands of various small-sided games (SSGs) on different age categories within a sub-elite soccer academy. We evaluated 63 young players from a Spanish sub-elite academy (under 14 = 21; under 16 = 21; under 18 = 21). Players performed four different small-side games focused on possession game (3-a-side; 4-a-side; 5-a-side; 6-a-side). The global indicators of performance and high-intensity actions were recorded through global positioning systems, whereas the heart rate responses were measured using heart rate monitors. Results: Under 16 ran a greater distance at high-intensity velocity than under 14 in the small side games 3v3 and 6v6. Furthermore, under 16 also ran a greater distance at high-intensity velocity than under 18 in the small side game 3v3 (p < 0.01). Under 14 showed greater acceleration at the highest intensity (> 2.75 m/s2) than the other age groups, under 16 and U18 (p < 0.01; ES (effect size) > 1). According to the physiological load, SSG 3v3 presented lower outcomes in Zone 6 (> 95% HRmax) than the small side game 4v4 and the small side game 5v5, in both under 14 and under 16. The workload of SSGs varies depending on the number of players, but also depending on the players’ ages. Therefore, when designing the SSGs it is important to consider both the players’ ages and the workload that want to be achieved.

ACS Style

Jorge López-Fernández; Javier Sánchez-Sánchez; Jorge García-Unanue; Enrique Hernando; Leonor Gallardo. Physical and Physiological Responses of U-14, U-16, and U-18 Soccer Players on Different Small-Sided Games. Sports 2020, 8, 66 .

AMA Style

Jorge López-Fernández, Javier Sánchez-Sánchez, Jorge García-Unanue, Enrique Hernando, Leonor Gallardo. Physical and Physiological Responses of U-14, U-16, and U-18 Soccer Players on Different Small-Sided Games. Sports. 2020; 8 (5):66.

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Jorge López-Fernández; Javier Sánchez-Sánchez; Jorge García-Unanue; Enrique Hernando; Leonor Gallardo. 2020. "Physical and Physiological Responses of U-14, U-16, and U-18 Soccer Players on Different Small-Sided Games." Sports 8, no. 5: 66.

Journal article
Published: 11 May 2020 in International Journal of Environmental Research and Public Health
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The current study aimed at analyzing the relationship between body composition, adherence to the Mediterranean diet (MD), and physical fitness (PF) in a young active population. A total of 1198 athletes (boys = 875; girls = 323) enrolled in different municipal sports schools participated in this study. Data on adherence to the MD (KIDMED questionnaire), anthropometric measurements, and PF (20 m shuttle run test, handgrip strength, vertical jump and forced spirometry) were collected. Results show that the pubertal boys had a higher score in the KIDMED test than the prepubertal ones (+0.38, p = 0.28). Moreover, boys with better adherence to the MD had significantly higher results in handgrip strength (+12.20 regarding low MD group and +9.13 regarding medium MD group, p < 0.05), as well as in forced vital capacity (FVC) (+0.66 regarding low MD group and 0.29 regarding medium MD group, p < 0.05). No differences were found in the girls. Finally, the result of the KIDMED test is a variable with a positive and significant relationship with cardiorespiratory fitness, along with the FVC, percentage of fat mass, and performance in the vertical jump (p < 0.05). It is concluded that adherence to the MD could show a relationship with various PF variables in boys and could be a predictor of cardiorespiratory fitness in both cases.

ACS Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Ivan Clavel; Leonor Gallardo; Jorge Garcia-Unanue. Relationship between Adherence to the Mediterranean Diet and Body Composition with Physical Fitness Parameters in a Young Active Population. International Journal of Environmental Research and Public Health 2020, 17, 3337 .

AMA Style

Samuel Manzano-Carrasco, Jose Luis Felipe, Javier Sanchez-Sanchez, Antonio Hernandez-Martin, Ivan Clavel, Leonor Gallardo, Jorge Garcia-Unanue. Relationship between Adherence to the Mediterranean Diet and Body Composition with Physical Fitness Parameters in a Young Active Population. International Journal of Environmental Research and Public Health. 2020; 17 (9):3337.

Chicago/Turabian Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Ivan Clavel; Leonor Gallardo; Jorge Garcia-Unanue. 2020. "Relationship between Adherence to the Mediterranean Diet and Body Composition with Physical Fitness Parameters in a Young Active Population." International Journal of Environmental Research and Public Health 17, no. 9: 3337.

Journal article
Published: 07 May 2020 in International Journal of Environmental Research and Public Health
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This study aimed to analyze the differences in physical fitness variables, body composition, and adherence to the Mediterranean diet according to the cardiorespiratory fitness and the maturational stage in young football players. A total of 194 male football players (aged 8–16) from three football sport schools participated in this study. Data on cardiorespiratory fitness (the 20-m shuttle run test), anthropometric measurements, handgrip strength, respiratory capacity (forced spirometry), and adherence to the Mediterranean diet (KIDMED questionnaire) were collected. Players were divided into two groups depending on their maturational stage (prepubertal n = 127 and pubertal n = 67). The results show a direct relationship between low levels of cardiorespiratory fitness and body mass index, as well as body fat and leg fat. Similarly, players with lower cardiorespiratory fitness presented higher values of handgrip strength in the prepubertal state. On the other hand, improvements in respiratory values were observed in the pubertal state with the rest of the parameters when the cardiorespiratory fitness was increased. Therefore, the promotion of recreational football that encourage and develop cardiorespiratory fitness is a key factor and can be used as an effective sport activity to promote physical fitness and healthy habits in children and adolescents as well as within the population that is already physically active.

ACS Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Leonor Gallardo; Jorge Garcia-Unanue. Physical Fitness, Body Composition, and Adherence to the Mediterranean Diet in Young Football Players: Influence of the 20 mSRT Score and Maturational Stage. International Journal of Environmental Research and Public Health 2020, 17, 3257 .

AMA Style

Samuel Manzano-Carrasco, Jose Luis Felipe, Javier Sanchez-Sanchez, Antonio Hernandez-Martin, Leonor Gallardo, Jorge Garcia-Unanue. Physical Fitness, Body Composition, and Adherence to the Mediterranean Diet in Young Football Players: Influence of the 20 mSRT Score and Maturational Stage. International Journal of Environmental Research and Public Health. 2020; 17 (9):3257.

Chicago/Turabian Style

Samuel Manzano-Carrasco; Jose Luis Felipe; Javier Sanchez-Sanchez; Antonio Hernandez-Martin; Leonor Gallardo; Jorge Garcia-Unanue. 2020. "Physical Fitness, Body Composition, and Adherence to the Mediterranean Diet in Young Football Players: Influence of the 20 mSRT Score and Maturational Stage." International Journal of Environmental Research and Public Health 17, no. 9: 3257.

Journal article
Published: 03 May 2020 in Sustainability
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The aim of this paper is to analyse different interactions of the variables (age, position, or quality of the team and the league) and the crowdsourcing Transfermarkt values of male players in the top European leagues. All players (n = 2259) in the five most highly valued European leagues—Spain, England, Italy, France, and Germany—from the 2017/2018 season were included in this study. Data were retrieved from the open-source football database (Transfermarkt). The present economic value (VPRESENT) and maximum economic value (VMAX) of all players with professional contracts were registered. Regression analysis evidenced a significant influence of the level of the team, the birth month, the league, the playing position and the age of the player on mean and maximum economic value (p < 0.05). This analysis confirms that the players participating in the UEFA Champions League, Premier League teams, playing as attacking midfielders, and born in the first quarter of the year are the most economically valued in terms of both current value (R2 of 0.33) and maximal value (R2 of 0.36). Therefore, international football entities must take into account the financial balance between competitions—and not only at the domestic level, as the attractiveness and balance of European competitions may be directly affected.

ACS Style

Jose Luis Felipe; Alvaro Fernandez-Luna; Pablo Burillo; Luis Eduardo De La Riva; Javier Sanchez-Sanchez; Jorge Garcia-Unanue. Money Talks: Team Variables and Player Positions that Most Influence the Market Value of Professional Male Footballers in Europe. Sustainability 2020, 12, 3709 .

AMA Style

Jose Luis Felipe, Alvaro Fernandez-Luna, Pablo Burillo, Luis Eduardo De La Riva, Javier Sanchez-Sanchez, Jorge Garcia-Unanue. Money Talks: Team Variables and Player Positions that Most Influence the Market Value of Professional Male Footballers in Europe. Sustainability. 2020; 12 (9):3709.

Chicago/Turabian Style

Jose Luis Felipe; Alvaro Fernandez-Luna; Pablo Burillo; Luis Eduardo De La Riva; Javier Sanchez-Sanchez; Jorge Garcia-Unanue. 2020. "Money Talks: Team Variables and Player Positions that Most Influence the Market Value of Professional Male Footballers in Europe." Sustainability 12, no. 9: 3709.