Paz-Franco, A, Rey, E, and Barcala-Furelos, R. Effects of three different resistance training frequencies on jump, sprint, and repeated sprint ability performances in professional futsal players. J Strength Cond Res 31(12): 3343-3350, 2017-The aim of this study was to examine the effect of 3 different resistance training (RT) frequencies (1 strength training session per week [1W], 2 strength training sessions per week [2W], or 1 strength training session every second week [0.5W]) on jump, sprint, and repeated sprint ability (RSA) performances in professional futsal players. Thirty-five futsal players were randomized into 1 of 3 groups, the 1W group (n = 12), 2W group (n = 12), or the 0.5W group (n = 11). The players performed the same RT during 6 weeks, and only training frequency differed between the groups. Within-group analysis showed significant improvements in jump (p ≤ 0.001, effect size [ES] = 0.13-0.35), sprint (p ≤ 0.001, ES = 0.48-0.71), and RSA (p ≤ 0.01, ES = 0.22-0.63) from pretest to posttest in 1W and 2W groups. However, no significant (p > 0.05) pre-post changes were observed for the 0.5W group in any variable. In the between-groups analysis, significant better results were found in jump (p ≤ 0.01), sprint (p ≤ 0.01), and RSA performances (p ≤ 0.01) in the 1W and 2W groups in comparison with 0.5W group. Also, jump (p ≤ 0.05) and 5-m sprint (p ≤ 0.05) performances were significantly better in the 2W group in comparison with 1W group. In conclusion, the current study showed that 6 weeks of RT 1 or 2 times per week in addition to typical futsal training produced significant improvements in jump, sprint, and RSA performances. Additionally, RT once every second week may be sufficient to maintain physical fitness in professional futsal players. This information may be useful for coaches when planning training contents during congested fixture schedules or in periods where the emphasis needs to be put on other qualities and to spend as little time as possible on maintaining or increasing physical performance.

The analysis of Futsal goalkeeper acquires great relevance due to the characteristics demanded by the competition that requires its position with respect to the other players and the importance that has this specific position in the game. For this reason we have analyzed the existing interactions between the conducts of the Futsal goalkeeper and different variables (actions, play area, goal-block or error-goal, game situation and team). We have used and observational methodology, because it is one the options of the scientific study of the behavior, as much in real situations as in controlled situations. The results show that in the shots made to the goal, a 76.5% of them are goalkeeper interventions, in situation of positional attack (54%), with an incidence in the game on the sidelines areas of the field (L-39%, R-33%) and being the technical action more important the cross (33.7%). Therefore, it is observed relation between the goalkeeper's action and the zone where the opponent shots, between the actions performed by the goalkeeper and the goal (success-block/error-goal), and between the action and the belonging to a specific team. Otherwise, it is not observed relation between goalkeeper's action and the diverse situations of the game.

El objetivo del estudio fue obtener un perfil condicional de las tareas en fútbol sala, analizándolas en función de 5 variables (tiempo de intervención, duración, FCMáx, FCMedia y concentración de lactato). Participaron 8 jugadores profesionales, con una muestra total de 70 tareas agrupadas en 8 subcategorías. El análisis estadístico fue realizado con el SPSS 20.0, y consta de análisis descriptivos generales y dos pruebas ANOVA de un factor con corrección de Bonferroni. Los resultados muestran que las tareas de juego real no alcanzan la carga fisiológica de la competición. Además, las tareas de resistencia a la velocidad alcanzan una lactacidemia superior al resto. Finalmente, las tareas de transición, movilidad, campo completo, 4x4 y portero-jugador tienen características condicionales similares, adecuadas para el desarrollo de la resistencia mixta y umbral anaeróbico. Se concluye que las tareas analizadas sirven para el desarrollo de las diferentes vías metabólicas características del fútbol sala.