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Javier Raya-González

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Review
Published: 27 July 2021 in Research in Sports Medicine
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The aims of the current systematic review were to evaluate the current literature surrounding the chronic effect of flywheel training on the physical capacities of soccer players, and to identify areas for future research to establish guidelines for its use. Studies were identified following a search of electronic databases (PubMed and SPORTDiscus) in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA). Eleven studies met the inclusion criteria and were included. The methodological quality of the included studies ranged between 10 and 18 with an average score of 15 points using the PEDro scale. The training duration ranged from 6 weeks to 27 weeks, with volume ranging from 1 to 6 sets and 6 to 10 repetitions, and frequency from 1 to 2 times a week. This systematic review reported that a diverse range of flywheel training interventions can effectively improve strength, power, jump, and changes of direction in male soccer players of varying levels. Flywheel training interventions improve the physical capacities of soccer players of varying levels. Nonetheless, the current literature suggests contrasting evidence regarding flywheel training induced changes in sprint speed and acceleration capacity of soccer players.

ACS Style

William J.C. Allen; Kevin L. De Keijzer; Javier Raya-González; Daniel Castillo; Giuseppe Coratella; Marco Beato. Chronic effects of flywheel training on physical capacities in soccer players: a systematic review. Research in Sports Medicine 2021, 1 -21.

AMA Style

William J.C. Allen, Kevin L. De Keijzer, Javier Raya-González, Daniel Castillo, Giuseppe Coratella, Marco Beato. Chronic effects of flywheel training on physical capacities in soccer players: a systematic review. Research in Sports Medicine. 2021; ():1-21.

Chicago/Turabian Style

William J.C. Allen; Kevin L. De Keijzer; Javier Raya-González; Daniel Castillo; Giuseppe Coratella; Marco Beato. 2021. "Chronic effects of flywheel training on physical capacities in soccer players: a systematic review." Research in Sports Medicine , no. : 1-21.

Research article
Published: 07 July 2021 in Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology
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The purpose of this study was to investigate the relationship between physical fitness and external load determined by local positioning system (LPS) in a simulated basketball game. Fourteen professional male basketball players performed a lane agility drill, 20-m maximal sprint speed, countermovement jump (CMJ), drop jump, and repeated sprint tests. Player movements during games (two games of 4 × 7 min) were measured using a portable WIMUPRO LPS and six ultra-wideband antennas. Distance covered, and distance covered in different speed zones, accelerations, and decelerations were recorded. The results obtained showed significant relationship between (a) distance at high decelerations (>−2.0 m s−2) and 20-m maximal sprint speed ( r = 0.669, p = 0.049); (b) 20-m maximal sprint speed and maximal speed in simulated games ( r = 0.576, p = 0.031); (c) CMJ height and sprint distance (>24.1 km h−1) covered in simulated games ( r = 0.772, p = 0.001); and (d) high decelerations and 20-m maximal sprint speed ( r = 0.669, p = 0.049) and best time in the RSA test ( r = −0.731, p = 0.039). Coaches and strength and conditioning coaches must adjust their training to optimize speed and jumping ability, as they are reflected in physical performance in-game. Players who reach higher speeds (i.e. RSAbest and 20-m sprint time) and CMJ height in field tests may be affected by greater deceleration load in specific training and competition (eccentric contraction). Since hamstring muscles suffer great strain during deceleration, they are more prone to injury, thus these players may require a specific training program to decrease performance losses and risk of injury.

ACS Style

Alejandro Rodríguez-Fernández; Rodrigo Ramírez-Campillo; Javier Raya-González; Daniel Castillo; Fabio Y Nakamura. Is physical fitness related with in-game physical performance? A case study through local positioning system in professional basketball players. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 2021, 1 .

AMA Style

Alejandro Rodríguez-Fernández, Rodrigo Ramírez-Campillo, Javier Raya-González, Daniel Castillo, Fabio Y Nakamura. Is physical fitness related with in-game physical performance? A case study through local positioning system in professional basketball players. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology. 2021; ():1.

Chicago/Turabian Style

Alejandro Rodríguez-Fernández; Rodrigo Ramírez-Campillo; Javier Raya-González; Daniel Castillo; Fabio Y Nakamura. 2021. "Is physical fitness related with in-game physical performance? A case study through local positioning system in professional basketball players." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology , no. : 1.

Research article
Published: 12 May 2021 in Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology
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The aim of this study was twofold: (1) to test for differences on the external and internal responses encountered by youth soccer players during four bouts of 5-a-side small-sided game (SSG) across age categories and, (2) to analyze the external and internal responses attending to players’ sprinting and jumping profile within each age-category (i.e. under 14 (U14), under 16 (U16) and under 18 (U18)). Forty-eight young soccer players participated in this study and were distributed by each age-category. Players were classified based on jumping-profile (stronger and weaker) and sprint-profile (faster and slower). Also, players played four bouts of 4 min of a 5-a-side SSG, including goalkeepers. Likewise, external responses (i.e. total distance, distance covered at walking, jogging and high-intensity speeds, number of accelerations and decelerations, body impacts and player load) and internal responses (peak heart rate, % of peak heart rate and training impulse) were collected. The main results revealed a significant age-category by bout interaction for total distance covered, distance at jogging, number of accelerations, body impacts and player load for players from the U16 and U18 age categories, showing lower values during the last bouts, compared to the first bouts ( p ≤ 0.001–0.020, [Formula: see text] = 0.13–0.17). Moreover, while no significant ( p = 0.09–0.95) sprint-profile by bout interaction was found for the registered variables across age categories, stronger U18 players showed a smaller decrease across bouts for distance covered at high-intensity, compared to weaker U18 players. These findings suggest there is a need for coaching staff to include training strategies that allow for reducing accumulated neuromuscular fatigue in U16 and U18 age categories.

ACS Style

Daniel Castillo; Javier Yanci; Javier Raya-González; Ángel Lago-Rodríguez. Influence of players’ physical performances on the variation of the external and internal responses to repeated bouts of small-sided games across youth age categories. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 2021, 1 .

AMA Style

Daniel Castillo, Javier Yanci, Javier Raya-González, Ángel Lago-Rodríguez. Influence of players’ physical performances on the variation of the external and internal responses to repeated bouts of small-sided games across youth age categories. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology. 2021; ():1.

Chicago/Turabian Style

Daniel Castillo; Javier Yanci; Javier Raya-González; Ángel Lago-Rodríguez. 2021. "Influence of players’ physical performances on the variation of the external and internal responses to repeated bouts of small-sided games across youth age categories." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology , no. : 1.

Review
Published: 13 April 2021 in Healthcare
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This systematic review with meta-analysis was conducted to assess the effects of small-sided games (SSG)-based training programs on bone mineral density (BMD) in untrained adults. The data sources utilized were Cochrane, Embase, Medline (PubMed), Scopus, SPORTDiscus, and Web of Science. The study eligibility criteria were: (i) untrained adults (>18 years old) of any sex, with or without a noncommunicable disease; (ii) SSG-based programs with a minimum duration of four weeks and no restrictions regarding frequency (number of sessions per week); (iii) passive or active control groups; (iv) pre-post values of BMD; (v) only randomized controlled trials; and (vi) only original and full-text studies written in English. The database search initially yielded 374 titles. From those, nine articles were eligible for the systematic review and meta-analysis. The age of included population varied from a minimum of 20 and a maximum of 71 years old. Non-significant differences between SSG and passive and active control groups on total BMD (ES = 0.14; p = 0.405 and ES = 0.28; p = 0.05, respectively). Meanwhile, significant differences in favor of SSGs vs. passive and control groups were detected, evidencing an improvement of BMD in lower limbs of the adult population for both sexes (ES = 0.26; p = 0.05 and ES = 0.28; p = 0.156, respectively). As conclusions, SSGs can be used as a non-pharmacological alternative to increase the BMD in the lower limbs despite having no significant impact on total body BMD. Careful generalization should be done of the level of heterogeneity.

ACS Style

Filipe Clemente; Rodrigo Ramirez-Campillo; Hugo Sarmento; Daniel Castillo; Javier Raya-González; Thomas Rosemann; Beat Knechtle. Effects of Recreational Small-Sided Soccer Games on Bone Mineral Density in Untrained Adults: A Systematic Review and Meta-Analysis. Healthcare 2021, 9, 457 .

AMA Style

Filipe Clemente, Rodrigo Ramirez-Campillo, Hugo Sarmento, Daniel Castillo, Javier Raya-González, Thomas Rosemann, Beat Knechtle. Effects of Recreational Small-Sided Soccer Games on Bone Mineral Density in Untrained Adults: A Systematic Review and Meta-Analysis. Healthcare. 2021; 9 (4):457.

Chicago/Turabian Style

Filipe Clemente; Rodrigo Ramirez-Campillo; Hugo Sarmento; Daniel Castillo; Javier Raya-González; Thomas Rosemann; Beat Knechtle. 2021. "Effects of Recreational Small-Sided Soccer Games on Bone Mineral Density in Untrained Adults: A Systematic Review and Meta-Analysis." Healthcare 9, no. 4: 457.

Journal article
Published: 19 February 2021 in International Journal of Environmental Research and Public Health
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(1) Background: Cyberbullying is a social concern in adolescents. The practice of physical activity is a key factor in protection against cyberbullying related to the multiple psychological benefits. Therefore, the study sets out to analyse the relationship between amount, types, enjoyment of physical activity and performance in physical education with cyberbullying. (2) Methods: A sample of 867 adolescents between 12 and 19 years of age from two schools in Andalusia (Spain) was studied. A computer-based questionnaire given in the classroom was used, with two questions about the type of physical activity, one on physical education performance, the Scale of Enjoyment of Physical Activity (PACES) and the Spanish version of the European Cyberbullying Intervention Project Questionnaire (ECIPQ). (3) Results: Clear relationships were found between the practice of physical activity and cybervictimisation. However, less involvement has been observed among girls who practice physical activity in cyberaggression. (4) Conclusion: In relation to the types of physical activity, it seems that practising physical activities that involve competition can help to develop defence mechanisms against cyberaggression, as well as improve values to be less involved in cyberaggression.

ACS Style

Juan Benítez-Sillero; José Armada Crespo; Esther Ruiz Córdoba; Javier Raya-González. Relationship between Amount, Type, Enjoyment of Physical Activity and Physical Education Performance with Cyberbullying in Adolescents. International Journal of Environmental Research and Public Health 2021, 18, 2038 .

AMA Style

Juan Benítez-Sillero, José Armada Crespo, Esther Ruiz Córdoba, Javier Raya-González. Relationship between Amount, Type, Enjoyment of Physical Activity and Physical Education Performance with Cyberbullying in Adolescents. International Journal of Environmental Research and Public Health. 2021; 18 (4):2038.

Chicago/Turabian Style

Juan Benítez-Sillero; José Armada Crespo; Esther Ruiz Córdoba; Javier Raya-González. 2021. "Relationship between Amount, Type, Enjoyment of Physical Activity and Physical Education Performance with Cyberbullying in Adolescents." International Journal of Environmental Research and Public Health 18, no. 4: 2038.

Review
Published: 28 January 2021 in Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials
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ACS Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Markel Rico-González; Thomas Rosemann; Beat Knechtle. Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials. Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials 2021, 1 .

AMA Style

Filipe Manuel Clemente, Rodrigo Ramirez-Campillo, Daniel Castillo, Javier Raya-González, Markel Rico-González, Thomas Rosemann, Beat Knechtle. Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials. Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials. 2021; ():1.

Chicago/Turabian Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Markel Rico-González; Thomas Rosemann; Beat Knechtle. 2021. "Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials." Effects of plyometric jump training on soccer player’s balance: A systematic review and meta-analysis of randomized-controlled trials , no. : 1.

Review
Published: 25 January 2021 in Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials
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ACS Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Hugo Sarmento; Daniel Castillo; Javier Raya-González; Thomas Rosemann; Beat Knechtle. Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials. Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials 2021, 1 .

AMA Style

Filipe Manuel Clemente, Rodrigo Ramirez-Campillo, Hugo Sarmento, Daniel Castillo, Javier Raya-González, Thomas Rosemann, Beat Knechtle. Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials. Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials. 2021; ():1.

Chicago/Turabian Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Hugo Sarmento; Daniel Castillo; Javier Raya-González; Thomas Rosemann; Beat Knechtle. 2021. "Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials." Effects of recreational small-sided soccer games on bone mineral density in untrained adults: A systematic review and meta-analysis of randomized-controlled trials , no. : 1.

Review
Published: 12 January 2021 in Sports Medicine
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Football is the most popular sport among women; however, little is known about the injury profile in this population. This information would help design tailored injury risk mitigation strategies that may make football safer for women. The aim of this study was to perform a systematic review and meta-analysis of epidemiological data of injuries in women´s football. A systematic review following PRISMA guidelines was performed up to January 2020 in PubMed, Web of Science, Sportdiscus and the Cochrane Library databases. Twenty-two studies reporting the incidence of injuries in women football were analysed. Two reviewers independently extracted data (intraclass correlation coefficient [ICC] for inter-reviewer reliability = 0.87) and assessed study quality using the STROBE statement, GRADE approach, Newcastle Ottawa Scale and Downs and Black assessment tools. Studies were combined in pooled analyses (injury incidence and injury proportion) using a Poisson random effects regression model. The overall incidence of injuries in female football players was 6.1 injuries/1000 h of exposure. Match injury incidence (19.2 injuries/1000 h of exposure) was almost six times higher than training injury incidence rate (3.5 injuries/1000 h of exposure). Lower extremity injuries had the highest incidence rates (4.8 injuries/1000 h of exposure). The most common types of injuries were muscle/tendon (1.8 injuries/1000 h of exposure) and joint (non-bone) and ligament (1.5 injuries/1000 h of exposure), which were frequently associated with traumatic incidents. Slight/minimal injuries (1–3 days of time loss) were the most common. The incidence rate of injuries during matches in the top five world ranking leagues was higher than the rest of the leagues (19.3 vs 10.7 injuries/1000 h of exposure, respectively). The weighted injury proportion was 1.1 (95% confidence interval = 0.6–1.7) whereby on average players sustained more than one injury per season. Female football players are exposed to a substantial risk of sustaining injuries, especially during matches that require the highest level of performance. To markedly reduce overall injury burden, efforts should focus on introducing and evaluating preventative measures that target match specific dynamics to make football players more capable of responding to the challenges that they have to deal with during match play. This systematic review was registered in the PROSPERO international prospective register of systematic reviews (ID = CRD42019118152).

ACS Style

Alejandro López-Valenciano; Javier Raya-González; Jose Alberto Garcia-Gómez; Alba Aparicio-Sarmiento; Pilar Sainz de Baranda; Mark De Ste Croix; Francisco Ayala. Injury Profile in Women’s Football: A Systematic Review and Meta-Analysis. Sports Medicine 2021, 51, 423 -442.

AMA Style

Alejandro López-Valenciano, Javier Raya-González, Jose Alberto Garcia-Gómez, Alba Aparicio-Sarmiento, Pilar Sainz de Baranda, Mark De Ste Croix, Francisco Ayala. Injury Profile in Women’s Football: A Systematic Review and Meta-Analysis. Sports Medicine. 2021; 51 (3):423-442.

Chicago/Turabian Style

Alejandro López-Valenciano; Javier Raya-González; Jose Alberto Garcia-Gómez; Alba Aparicio-Sarmiento; Pilar Sainz de Baranda; Mark De Ste Croix; Francisco Ayala. 2021. "Injury Profile in Women’s Football: A Systematic Review and Meta-Analysis." Sports Medicine 51, no. 3: 423-442.

Journal article
Published: 08 January 2021 in International Journal of Environmental Research and Public Health
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Although asymmetries in lower limbs have been linked with players’ performance in male soccer players, literature that has been published addressing female soccer is scarce. Thus, the aim of this study was twofold: (i) describe the asymmetries of women soccer players during jumping, change-of-direction and range-of-motion tests; and (ii) test possible relationships between asymmetries and injury risk in female soccer players. Sixteen female players (15.5 ± 1.5 years) performed a battery of fitness tests (i.e., jump ability, change-of-direction ability and passive range-of-motion) and muscle mass analysis via dual-energy X-ray absorptiometry, through which the specific asymmetry index and the related injury risk were calculated. Significant (p < 0.05) lower asymmetries in the change-of-direction test were observed in comparison to those observed in jumping and range-of-motion tests; significant (p < 0.05) lower asymmetries in muscle mass were also reported compared to those found in the change-of-direction and countermovement jump tests. Additionally, increased injury risk for countermovement jump and hip flexion with extended knee range-of-motion (relating to asymmetry values) and for ankle flexion with flexed knee range-of-motion in both legs (relating to reference range-of-motion values), as well as increased individual injury risk values, were observed across all tests. These findings suggest the necessity to implement individual approaches for asymmetry and injury risk analyses.

ACS Style

Javier Raya-González; Filipe Manuel Clemente; Daniel Castillo. Analyzing the Magnitude of Interlimb Asymmetries in Young Female Soccer Players: A Preliminary Study. International Journal of Environmental Research and Public Health 2021, 18, 475 .

AMA Style

Javier Raya-González, Filipe Manuel Clemente, Daniel Castillo. Analyzing the Magnitude of Interlimb Asymmetries in Young Female Soccer Players: A Preliminary Study. International Journal of Environmental Research and Public Health. 2021; 18 (2):475.

Chicago/Turabian Style

Javier Raya-González; Filipe Manuel Clemente; Daniel Castillo. 2021. "Analyzing the Magnitude of Interlimb Asymmetries in Young Female Soccer Players: A Preliminary Study." International Journal of Environmental Research and Public Health 18, no. 2: 475.

Research article
Published: 07 January 2021 in PLOS ONE
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This study was performed aimed at comparing multidirectional bilateral and unilateral jump performance and passive range of motion (ROM) of lower limbs between soccer and basketball young players and evaluating associations between inter-limb ROM asymmetry and bilateral jump performance. A total of 67 young male athletes participated in this study, who were classified as soccer (n = 40; 15.55 ± 1.5 y; 1.76 ± 0.12 m; 58.15 ± 10.82 kg; 19.84 ± 2.98 kg·m2) and basketball (n = 27; 15.7 ± 1.66 y; 1.76 ± 0.12 m; 62.33 ± 16.57 kg; 19.84 ± 2.98 kg·m2) players. Participants were asked to perform bilateral and unilateral multidirectional jumps, and passive ROM of hip (flexion, extension and abduction), knee (flexion) and ankle (dorsiflexion) joints was also assessed. Significant between-group differences were observed for hip extension with flexed knee ROM in dominant (soccer: 142.43 ± 7.74°; basketball: 148.63 ± 8.10°) and non-dominant (soccer: 144.38 ± 8.36°; basketball: 148.63 ± 6.45°) legs; hip flexion with flexed knee ROM in dominant (soccer: 13.26 ± 4.71°; basketball: 9.96 ± 3.42°) and non-dominant (soccer: 12.86 ± 4.55°; basketball: 9.70 ± 3.62°) legs; and for the ratio of hip abduction (soccer: 1.02 ± 0.08; basketball: 0.97 ± 0.11). However, no significant between-group differences were observed for bilateral and unilateral jump capacity, or for inter-limb asymmetries (dominant vs. non-dominant leg). Finally, no associations were observed between ROM ratio (dominant vs. non-dominant leg) and bilateral jump performance. These findings lead to the suggestion that differences on passive ROM values in young male athletes may be sport-specific. Additionally, there seems to be need for the implementation of training strategies specifically aimed at improving bilateral or unilateral jump ability, or at diminishing inter limb passive ROM differences in order to improve multidirectional jump performance for neither soccer nor basketball youth male players.

ACS Style

Marta Domínguez-Díez; Daniel Castillo; Javier Raya-González; Silvia Sánchez-Díaz; María Soto-Célix; Tara Rendo-Urteaga; Ángel Lago-Rodríguez. Comparison of multidirectional jump performance and lower limb passive range of motion profile between soccer and basketball young players. PLOS ONE 2021, 16, e0245277 .

AMA Style

Marta Domínguez-Díez, Daniel Castillo, Javier Raya-González, Silvia Sánchez-Díaz, María Soto-Célix, Tara Rendo-Urteaga, Ángel Lago-Rodríguez. Comparison of multidirectional jump performance and lower limb passive range of motion profile between soccer and basketball young players. PLOS ONE. 2021; 16 (1):e0245277.

Chicago/Turabian Style

Marta Domínguez-Díez; Daniel Castillo; Javier Raya-González; Silvia Sánchez-Díaz; María Soto-Célix; Tara Rendo-Urteaga; Ángel Lago-Rodríguez. 2021. "Comparison of multidirectional jump performance and lower limb passive range of motion profile between soccer and basketball young players." PLOS ONE 16, no. 1: e0245277.

Review
Published: 05 January 2021 in Research in Sports Medicine
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This study aimed to evaluate the effect of flywheel training on female populations, report practical recommendations for practitioners based on the currently available evidence, underline the limitations of current literature, and establish future research directions. Studies were searched through the electronic databases (PubMed, SPORTDiscus, and Web of Science) following the preferred reporting items for systematic reviews and meta-analysis statement guidelines. The methodological quality of the seven studies included in this review ranged from 10 to 19 points (good to excellent), with an average score of 14-points (good). These studies were carried out between 2004 and 2019 and comprised a total of 100 female participants. The training duration ranged from 5 weeks to 24 weeks, with volume ranging from 1 to 4 sets and 7 to 12 repetitions, and frequency ranged from 1 to 3 times a week. The contemporary literature suggests that flywheel training is a safe and time-effective strategy to enhance physical outcomes with young and elderly females. With this information, practitioners may be inclined to prescribe flywheel training as an effective countermeasure for injuries or falls and as potent stimulus for physical enhancement.

ACS Style

Javier Raya-González; Kevin L. de Keijzer; Chris Bishop; Marco Beato. Effects of flywheel training on strength-related variables in female populations. A systematic review. Research in Sports Medicine 2021, 1 -18.

AMA Style

Javier Raya-González, Kevin L. de Keijzer, Chris Bishop, Marco Beato. Effects of flywheel training on strength-related variables in female populations. A systematic review. Research in Sports Medicine. 2021; ():1-18.

Chicago/Turabian Style

Javier Raya-González; Kevin L. de Keijzer; Chris Bishop; Marco Beato. 2021. "Effects of flywheel training on strength-related variables in female populations. A systematic review." Research in Sports Medicine , no. : 1-18.

Research article
Published: 05 January 2021 in Research in Sports Medicine
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This study investigated the effects of a weekly flywheel resistance training session over a 10-week period on U16 soccer players’ physical performance with special attention to change of direction ability (e.g., deficit [CODdef]). Twenty elite young soccer players were assigned to an experimental (EG, n = 10) or control (CG, n = 10) group. Unilateral countermovement jumps with dominant (CMJd) and non-dominant (CMJnd) leg, 10, 20, and 30-m linear sprint test and change of direction sprint test in 5 + 5 (COD10) and 10 + 10 m (COD20) were performed before and after flywheel training period. Significant within-group differences were found in CG in COD10 (p = 0.01; effect size [ES] = large) and CODdef10 (p = 0.03; ES = small) with dominant leg, while differences in EG were observed in CMJ (p = 0.001–0.01; ES = moderate-large) and in all COD and CODdef variables (p = 0.001–0.04; ES = large). Between-groups analysis revealed differences in favour of the EG in CMJ (p = 0.03–0.05) and COD and CODdef variables (p = 0.001–0.05). These findings suggest a weekly flywheel training session is suitable for improving jumping and COD abilities in U16 elite soccer players in season.

ACS Style

Javier Raya-González; Daniel Castillo; Kevin L. de Keijzer; Marco Beato. The effect of a weekly flywheel resistance training session on elite U-16 soccer players’ physical performance during the competitive season. A randomized controlled trial. Research in Sports Medicine 2021, 1 -15.

AMA Style

Javier Raya-González, Daniel Castillo, Kevin L. de Keijzer, Marco Beato. The effect of a weekly flywheel resistance training session on elite U-16 soccer players’ physical performance during the competitive season. A randomized controlled trial. Research in Sports Medicine. 2021; ():1-15.

Chicago/Turabian Style

Javier Raya-González; Daniel Castillo; Kevin L. de Keijzer; Marco Beato. 2021. "The effect of a weekly flywheel resistance training session on elite U-16 soccer players’ physical performance during the competitive season. A randomized controlled trial." Research in Sports Medicine , no. : 1-15.

Review
Published: 04 January 2021 in Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis
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ACS Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Ana Filipa Silva; José Afonso; Hugo Sarmento. Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis. Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis 2021, 1 .

AMA Style

Filipe Manuel Clemente, Rodrigo Ramirez-Campillo, Daniel Castillo, Javier Raya-González, Ana Filipa Silva, José Afonso, Hugo Sarmento. Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis. Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis. 2021; ():1.

Chicago/Turabian Style

Filipe Manuel Clemente; Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Ana Filipa Silva; José Afonso; Hugo Sarmento. 2021. "Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis." Effects of mental fatigue in physical demands and tactical behavior during small-sided soccer games: A systematic review with meta-analysis , no. : 1.

Review
Published: 28 November 2020 in Nutrients
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Considering nutrition education interventions have been frequently implemented in team sport athletes and have shown promising results, this study aimed to summarize the effects of nutrition education interventions on eating habits, nutrition knowledge, body composition, and physical performance in team sport athletes. A systematic review was conducted using the following databases: PubMed/MEDLINE, Web of Science and SPORTDiscus. A total of 14 studies met the inclusion criteria for the review. The methodological quality of included studies was evaluated, and each study was assessed according to the analyzed variables (i.e., eating habits, nutrition knowledge, body composition, and physical performance). Most studies showed improvements in or maintenance of variables used to indicate eating habits, nutrition knowledge, and body composition. However, limited studies examined the effect of nutrition education interventions on physical performance, with existing studies demonstrating disparate results. These findings suggest implementation of nutrition education interventions in team sport athletes could be an effective strategy to improve their eating habits, nutrition knowledge, and body composition. Due to the heterogeneity across the included studies regarding sport modality, competition level, age, and sex of the athletes investigated, as well as the intervention type adopted (i.e., online or face-to-face), it is difficult to establish optimal nutrition education interventions for each analyzed variable.

ACS Style

Silvia Sánchez-Díaz; Javier Yanci; Daniel Castillo; Aaron T. Scanlan; Javier Raya-González. Effects of Nutrition Education Interventions in Team Sport Players. A Systematic Review. Nutrients 2020, 12, 3664 .

AMA Style

Silvia Sánchez-Díaz, Javier Yanci, Daniel Castillo, Aaron T. Scanlan, Javier Raya-González. Effects of Nutrition Education Interventions in Team Sport Players. A Systematic Review. Nutrients. 2020; 12 (12):3664.

Chicago/Turabian Style

Silvia Sánchez-Díaz; Javier Yanci; Daniel Castillo; Aaron T. Scanlan; Javier Raya-González. 2020. "Effects of Nutrition Education Interventions in Team Sport Players. A Systematic Review." Nutrients 12, no. 12: 3664.

Review
Published: 11 September 2020 in Sports Medicine
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Even from a young age, modern soccer requires high levels of physical fitness development, particularly jumping and sprinting. Plyometric jump training (PJT), combined with young athletes’ regular soccer sessions, has the potential to improve jumping and sprinting. However, studies exploring the effects of PJT are generally limited by small sample sizes. This problem of underpowered studies may, thus, be resolved by pooling study results in a meta-analysis. The objective of this systematic review with meta-analysis (SRMA) was to assess the effects of plyometric jump training (PJT) on jumping and sprinting among young male soccer players. The SRMA included peer-reviewed articles that incorporated PJT in healthy players (i.e., < 23 years of age), a control group, and a measure of jumping or sprinting. Means and standard deviations of outcomes were converted to Hedges’ g effect sizes (ES), using the inverse variance random-effects model. Moderator analyses were conducted for PJT duration, frequency, total number of sessions, participants’ chronological age, and FIFA age categories (i.e., U-17 vs. U-20 vs. U-23). A multivariate random-effects meta-regression was also conducted. Thirty-three studies were included, comprising 1499 participants. PJT improved vertical jump tests (ES = 0.60–0.98; all p < 0.01) and linear sprint performance (ES = 0.60–0.98; p < 0.03). Interventions of > 7 weeks and > 14 PJT sessions induced greater effects compared to PJT with ≤ 7 weeks and ≤ 14 total sessions on 10-m sprint performance (between group p = 0.038). PJT is effective in improving jumping and sprinting performance among young male soccer players. Greater 10-m linear sprinting improvements were noted after interventions > 7-week duration and > 14 sessions, suggesting a greater return from exposure to longer PJT interventions, partially in support for the adoption of a long-term approach to athletic development in young athletes. However, with reference to the findings of the meta-regression, and those from the remaining subgroup and single factors analysis, a robust confirmation regarding the moderator role of participant’s age or PJT configuration effects on young soccer player’s fitness qualities needed.

ACS Style

Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Jason Moran; Eduardo Sáez De Villarreal; Rhodri S. Lloyd. Effects of Plyometric Jump Training on Jump and Sprint Performance in Young Male Soccer Players: A Systematic Review and Meta-analysis. Sports Medicine 2020, 50, 2125 -2143.

AMA Style

Rodrigo Ramirez-Campillo, Daniel Castillo, Javier Raya-González, Jason Moran, Eduardo Sáez De Villarreal, Rhodri S. Lloyd. Effects of Plyometric Jump Training on Jump and Sprint Performance in Young Male Soccer Players: A Systematic Review and Meta-analysis. Sports Medicine. 2020; 50 (12):2125-2143.

Chicago/Turabian Style

Rodrigo Ramirez-Campillo; Daniel Castillo; Javier Raya-González; Jason Moran; Eduardo Sáez De Villarreal; Rhodri S. Lloyd. 2020. "Effects of Plyometric Jump Training on Jump and Sprint Performance in Young Male Soccer Players: A Systematic Review and Meta-analysis." Sports Medicine 50, no. 12: 2125-2143.

Journal article
Published: 05 August 2020 in International Journal of Environmental Research and Public Health
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The aim of this study was to analyze the health and wellness status perception in amateur half-marathon runners according to sex, age, being injured or not during the two months prior to the race, and having the support or not of qualified staff for race preparation. Six hundred and twenty-four amateur level half-marathon athletes (515 men and 107 women; 41.5 ± 10.1 years) participated in the study. One week before competing in a half-marathon, participants answered the Hooper Index and the SF-36 questionnaire. Women stated higher stress before competing in the race (p < 0.01) compared to men and the group of runners of p < 0.05) compared to the group of >40 years. Women showed a better quality of life in physical and emotional role dimensions (p < 0.05), and the group of >40 years showed a better quality of life in the emotional role dimension (p < 0.05). The group that had suffered an injury (InjuryYes) declared greater muscle soreness (MusclSore; p < 0.01), and the group that had qualified staff (QualifStaffYes) declared a higher level of stress (p < 0.05) and fatigue (p < 0.01). The Injury No (InjuryNo) group showed a better quality of life in the physical function dimension (p < 0.01). The group that did not have qualified staff (QualifStaffNo) showed a better quality of life in the dimensions of body pain, general health, vitality, social function (p < 0.05), and mental health (p < 0.01), while the QualifStaffYes group showed better results in the dimensions of physical function and emotional role (p < 0.05). Sex, age, being injured or not during the two months prior to the race, and having the support or not of qualified staff for the race preparation can influence the health and wellness status perception.

ACS Style

Estibaliz Romaratezabala; Daniel Castillo; Javier Raya-González; Josune Rodríguez-Negro; Irati Aritzeta; Javier Yanci. Health and Wellness Status Perception of Half-Marathon Runners: Influence of Age, Sex, Injury, and Training with Qualified Staff. International Journal of Environmental Research and Public Health 2020, 17, 5649 .

AMA Style

Estibaliz Romaratezabala, Daniel Castillo, Javier Raya-González, Josune Rodríguez-Negro, Irati Aritzeta, Javier Yanci. Health and Wellness Status Perception of Half-Marathon Runners: Influence of Age, Sex, Injury, and Training with Qualified Staff. International Journal of Environmental Research and Public Health. 2020; 17 (16):5649.

Chicago/Turabian Style

Estibaliz Romaratezabala; Daniel Castillo; Javier Raya-González; Josune Rodríguez-Negro; Irati Aritzeta; Javier Yanci. 2020. "Health and Wellness Status Perception of Half-Marathon Runners: Influence of Age, Sex, Injury, and Training with Qualified Staff." International Journal of Environmental Research and Public Health 17, no. 16: 5649.

Journal article
Published: 01 August 2020 in Journal of Sport Rehabilitation
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Context: As the number of injuries in young soccer players increases, an epidemiological study is the first step in improving preventive strategies. Objectives: To analyze the injury profile of a Spanish professional soccer club’s academy during 4 consecutive seasons and to examine the injury incidence across different chronological age groups. Design: Prospective cohort design. Setting: Aggregate injury and exposure data collected during 4 consecutive seasons. Participants: Three hundred nine elite male young soccer players. Main Outcomes Measures: Injuries that led to participation time missed from training and match play prospectively reported by medical or coaching staff of the club. Results: A total of 464 time-loss injuries were observed during this study period. The overall injury incidence was 2.93 injuries per 1000 hours, with higher incidence during matches than during training (10.16 vs 2.10 injuries/1000 h; rate ratio [RR] = 0.21; 95% confidence interval [CI], 0.17–0.25; P < .05), with the U14 age group presenting the lowest injury rate (2.39 injuries/1000 h; RR = 1.15–1.57; P < .05). In terms of injury severity, moderate injuries were the most frequent (1.42 injuries/1000 h). Muscle injuries were the most common type of injuries (57.7%; 2.75 injuries/1000 h; RR = 1.84–13.4; P < .05), and hamstrings (93/268) were the most affected muscle group (0.58 injuries/1000 h; RR = 1.58–2.91; P < .05). Injury incidence showed a seasonal variation as indicated by peaks in August and October. In matches, specifically, the match period between 75 and 90 minutes showed the highest injury incidence (10.29 injuries/1000 h; RR = 1.89–6.38; P < .01). Conclusions: The findings of this study suggest that specific preventive strategies must be implemented to try to reduce the injury incidence in Spanish elite young soccer players attending to the characteristics of each age group.

ACS Style

Javier Raya-González; Luis Suárez-Arrones; Archit Navandar; Carlos Balsalobre-Fernández; Eduardo Sáez De Villarreal. Injury Profile of Elite Male Young Soccer Players in a Spanish Professional Soccer Club: A Prospective Study During 4 Consecutive Seasons. Journal of Sport Rehabilitation 2020, 29, 801 -807.

AMA Style

Javier Raya-González, Luis Suárez-Arrones, Archit Navandar, Carlos Balsalobre-Fernández, Eduardo Sáez De Villarreal. Injury Profile of Elite Male Young Soccer Players in a Spanish Professional Soccer Club: A Prospective Study During 4 Consecutive Seasons. Journal of Sport Rehabilitation. 2020; 29 (6):801-807.

Chicago/Turabian Style

Javier Raya-González; Luis Suárez-Arrones; Archit Navandar; Carlos Balsalobre-Fernández; Eduardo Sáez De Villarreal. 2020. "Injury Profile of Elite Male Young Soccer Players in a Spanish Professional Soccer Club: A Prospective Study During 4 Consecutive Seasons." Journal of Sport Rehabilitation 29, no. 6: 801-807.

Research article
Published: 30 July 2020 in Research in Sports Medicine
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The aim was to analyse the differences in professional handball players` injury profile according to the team`s competitive-level (i.e., First division vs. Second division). Fifty-three professional male handball players participated in this study during four consecutive seasons in the same team (2015–16 and 2016–17 for the First division league and 2017–18 and 2018–19 for the Second division league). No significant differences in overall incidence were observed between groups (3.69 vs 4.19 injuries/1000 h, RR = 0.88, 95% CI 0.64–1.22, P = 0.44), although significantly greater injury incidence during training sessions was observed in the Second division group (3.06 vs 1.61 injuries/1000 h, RR = 0.52, 95% CI 0.34–0.81, P = 0.01), while greater injury incidence during matches was reported in the First division group (84.03 vs 49.88 injuries/1000 h, RR = 1.68, 95% CI 1.00–2.83, P = 0.05). The second division group presented the greatest injury burden attending to overall, training and match exposure, as well as in most locations and injury types. Given the between groups differences found in the injury profile of handball player, it is suggested to implement specific preventive strategies attending to the characteristics of each level-group.

ACS Style

Javier Raya-González; Sergio García-Esteban; Mark De Ste Croix; Filipe Manuel Clemente; Daniel Castillo. Longitudinal differences in the injury profile of professional male handball players according to competitive-level. Research in Sports Medicine 2020, 29, 90 -102.

AMA Style

Javier Raya-González, Sergio García-Esteban, Mark De Ste Croix, Filipe Manuel Clemente, Daniel Castillo. Longitudinal differences in the injury profile of professional male handball players according to competitive-level. Research in Sports Medicine. 2020; 29 (1):90-102.

Chicago/Turabian Style

Javier Raya-González; Sergio García-Esteban; Mark De Ste Croix; Filipe Manuel Clemente; Daniel Castillo. 2020. "Longitudinal differences in the injury profile of professional male handball players according to competitive-level." Research in Sports Medicine 29, no. 1: 90-102.

Journal article
Published: 07 July 2020 in Research Quarterly for Exercise and Sport
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ACS Style

Javier Raya-González; Luis Suarez-Arrones; Javier Sanchez-Sanchez; Rodrigo Ramirez-Campillo; Fabio Y. Nakamura; Eduardo Sáez De Villarreal. Short and Long-Term Effects of a Simple-Strength-Training Program on Injuries Among Elite U-19 Soccer Players. Research Quarterly for Exercise and Sport 2020, 1 -9.

AMA Style

Javier Raya-González, Luis Suarez-Arrones, Javier Sanchez-Sanchez, Rodrigo Ramirez-Campillo, Fabio Y. Nakamura, Eduardo Sáez De Villarreal. Short and Long-Term Effects of a Simple-Strength-Training Program on Injuries Among Elite U-19 Soccer Players. Research Quarterly for Exercise and Sport. 2020; ():1-9.

Chicago/Turabian Style

Javier Raya-González; Luis Suarez-Arrones; Javier Sanchez-Sanchez; Rodrigo Ramirez-Campillo; Fabio Y. Nakamura; Eduardo Sáez De Villarreal. 2020. "Short and Long-Term Effects of a Simple-Strength-Training Program on Injuries Among Elite U-19 Soccer Players." Research Quarterly for Exercise and Sport , no. : 1-9.

Research article
Published: 10 June 2020 in Sports Biomechanics
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There is a lack of evidence regarding the match demands encountered in elite Ultimate Frisbee (UF) overall and dependent upon opponent ranking. These data may be useful to elite UF coaches to implement optimal training loads and recovery strategies. Therefore, this study quantified the physical demands of elite UF match-play and analysed differences in demands according to opponent ranking. Twelve UF players from the same national team participated in the study. An observational design was used to compare the physical demands encountered by players between opponents carrying different rankings (1st, 3rd, 4th, and 5th) during four official matches in a 5-team competition. No significant differences (p > 0.05) in sprinting and repeated-sprinting activity were evident across UF matches between opponents. In contrast, a higher (moderate-large) quantity and greater intensities of body impacts were observed in UF matches played against higher-ranked (1st) compared to lower-ranked teams (3rd, 4th, and 5th). Additionally, greater (moderate-large) PL and metabolic power were observed in matches played against higher-ranked (1st) compared to lower-ranked teams (3rd and 4th). These findings suggest coaches may need to reduce the training loads in the next days after the matches played against higher-ranked opponents compared to when facing lower-ranked opponents.

ACS Style

Daniel Castillo; Javier Raya-González; Aaron T. Scanlan; Marta Domínguez-Díez; María C. Madueno. Influence of opponent ranking on the physical demands encountered during Ultimate Frisbee match-play. Sports Biomechanics 2020, 1 -12.

AMA Style

Daniel Castillo, Javier Raya-González, Aaron T. Scanlan, Marta Domínguez-Díez, María C. Madueno. Influence of opponent ranking on the physical demands encountered during Ultimate Frisbee match-play. Sports Biomechanics. 2020; ():1-12.

Chicago/Turabian Style

Daniel Castillo; Javier Raya-González; Aaron T. Scanlan; Marta Domínguez-Díez; María C. Madueno. 2020. "Influence of opponent ranking on the physical demands encountered during Ultimate Frisbee match-play." Sports Biomechanics , no. : 1-12.