Examinando por Autor "Sánchez-Sánchez, Javier"

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    Cardiopulmonary- versus neuromuscular-based high-intensity interval training during a pre-season in youth female basketball players
    (Wroclaw University of Health and Sport Sciences, 2023) Rodríguez-Fernández, Alejandro; Lago, Ángel; Ramirez-Campillo, Rodrigo; Sánchez, Mario; Sánchez-Sánchez, Javier
    Purpose. This study compares the effects of 6 weeks of pre-season cardiopulmonary- vs. neuromuscular-based high-intensity interval training (HIIT) in female basketball players’ physical fitness. Methods. Overall, 16 female regional-level U19 basketball players were randomly allocated to a cardiopulmonary-based HIIT (C-HIIT) group (n = 8; age: 17.9 ± 0.6 years; height: 175.4 ± 6.5 cm; body mass: 68.1 ± 7.2 kg) or a neuromuscular-based HIIT (N-HIIT) group (n= 8; age: 18.0 ± 0.4 years; height: 175.6 ± 3.6 cm; body mass: 69.8 ± 5.0 kg). At the PRE-, MID- (3 weeks), and POST-training time points, the participants performed a 30-15 Intermittent Fitness Test (30-15 IFT; aerobic performance) and a repeated sprint ability (RSA) test (6 × 15 + 15 m [with 180° change of direction] with 20-second passive recovery). Results. A 2 × 3 mixed model analysis of variance revealed that both training interventions improved (p < 0.05) 30-15 IFT after 6 weeks (C-HIIT, 8.6% and ES = 2.01; N-HIIT, 3.3% and ES = 0.52). C-HIIT improved (p < 0.05) 30-15 IFT after 3 weeks (3.8%, ES = 0.90). Neither group improved (p > 0.05) in RSA results. Conclusions. C-HIIT and N-HIIT improves aerobic performance in female basketball players. However, for improvements in RSA, other training drills (e.g., repeated sprint training) and tasks with a higher number of changes of direction may be investigated. © Wroclaw University of Health and Sport Sciences.
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    Factors associated to the market value of professional soccer players
    (Universidad de Murcia Servicio de Publicaciones, 2022) Sánchez, Mario; Orgaz, Begoña; Ramirez-Campillo, Rodrigo; Nakamura, Fabio Yuzo; Luis-Pereira, Jesús María; Carretero, Manuel; Sánchez-Sánchez, Javier
    The objective of this study was analysed to the market value (MV) of professional soccer players from Top-5 European Soccer Leagues. An ANOVA analysed the effect of the independent variables on the MV of the soccer players, with p<0.01. Soccer players from the Premier League (PL) showed greater MV compared to other leagues. Foreign soccer players showed greater MV compared to national soccer players. Soccer players between 21-30 years showed greater MV compared to those <21 and >30 years. Forward and midfielders showed greater MV compared to goalkeepers and backs. Soccer players that represented their countries at international matches showed greater MV compared to those that did not. The soccer players with a youth background formation in their clubs in the Premier League and La Liga showed greater MV compared to soccer players coming from other clubs. In conclusion, extrinsic factors affect the MV of soccer players. Research results may be useful to the sport managers in the selection of professional soccer players. © Copyright 2018: Servicio de Publicaciones de la Universidad de Murcia
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    Quantitative Diet, Body Composition and Sprint Performance in Female Professional Beach Handball Players
    (MDPI, 2022-12) Martínez-Rodríguez, Alejandro; Sánchez-Sánchez, Javier; Martínez-Olcina, María; Vicente-Martínez, Manuel; Peñaranda-Moraga, Marcelo; Asencio-Mas, Nuria; Gonzálvez-Alvarado, Lucía; Matlosz, Piotr; Yáñez-Sepúlveda, Rodrigo; Cortés-Roco, Guillermo; Sánchez-Sáez, Juan Antonio
    Women’s elite sports have experienced an exponential increase in the last decade, as has beach handball (BH). The high demands of this sport mean that athletes need to be in superior physical condition, so nutrition and body composition are determining factors in their sporting performance. For this reason, the aim of this study was to analyze, compare and correlate the most relevant variables of food intake (quantitative), body composition (focus on the bone mass characteristics) and sprint performance in female professional BH players. Thirty-three women from the National Spanish Team participated in this study. Dietary assessment, anthropometric measurements and sprint tests were performed. In general, the players had a low carbohydrate intake and adequate protein intake, with no significant differences depending on the category and playing position. For senior players, positive correlations were found between protein intake and bone mass (r = 0.584, p = 0.022), polyunsaturated fatty acid intake and muscle mass (r = 0.387, p = 0.026) and finally between fat mass and animal protein intake (r = 0.569, p = 0.027). Body composition was similar in both categories; however, goalkeepers had the highest fat (22.6 ± 3.86%, 16.2 ± 4.84 kg) component (vs. wings: 17.4 ± 3.53%, p = 0.031/vs. specialists: 11.1 ± 1.91 kg, p = 0.034), and senior players had higher muscle mass (kilograms). It is worth noting the finding that players with a greater trochanter height had significantly lower sprint times (p = 0.014 and p = 0.048 for 5 and 10 m, respectively). Certain bone characteristics, such as iliospinale height, biacromial and bimalleolar diameters, mesosternal perimeter and biceps skinfold, differ depending on the position. In addition, the greater speed of the senior players may be due to the greater specialization, number of training sessions performed and specific bone characteristics, such as trochanter height. In this regard, the data provided in this study will assist with establishing criteria for the selection of talent for this sporting discipline. © 2022 by the authors.