Purpose. This study aimed to relate strength parameters of the judogi pull test and countermovement jump (CMJ), and body fat with body mass and to compare strength parameters in the judogi pull test between the dominant and non-dominant hands. Methods. Eighteen male judokas took part in this study. The following parameters were analysed: maximal force (F max ), time to maximal force (TF max ), rate of force development (rFD) and rate of peak force decrement (rPFD) of the dominant and nondominant hands during the pull test. Jump height (H max ), power, F max , peak velocity (PV) and rFD in the CMJ were also measured. A t-test and Pearson's correlation were used. Results. F max (absolute and relative) and rFD were greater for the dominant hand, whereas rFPD was greater for the non-dominant hand during the pull test. There was a significant correlation only between absolute F max and body mass (r = 0.51) in the pull test. For the CMJ, relative power (r = -0.57), H max (r = -0.49) and PV (r = -0.53) were negatively correlated with body mass, while absolute F max (r = 0.84) and power (r = 0.69) were positively correlated with body mass. A significant correlation between body mass and body fat (r = 0.88) was found. Conclusions. There are differences in maximal and explosive force and the rate of peak force decrement between the dominant and non-dominant hand. Absolute values of power and maximal force increased according to body mass (and, therefore, a higher weight category); however jump per formance decreased with an increase in body mass (weight category).

The purpose of the present study was to analyze the effects of two shuttle-run interval training (SRIT) models with one and three directional changes per running bout on the aerobic and anaerobic performances of elite female futsal players. Sixteen players competing in the Brazilian National Division League took part in the study. The training protocols consisted of shuttle-run intervals organized in four sets of 4-min bouts with 3- min of rest intervals between the sets. The SRIT models were composed of one (7.5 s running and 7.5 s pause [SRIT7.5x7.5]; n=7) or three (15 s running and 15 s pause [SRIT15x15]; n=9) directional changes. The athletes performed the following tests before and after a 5-week training period: incremental treadmill test (ITT), Futsal Intermittent Endurance Test (FIET) [with respective peak speeds (PS)] and a repeated sprint ability (RSA) test. After the training period, PSFIET and speed at the second lactate turnpoint were very likely and almost certainly increased in both training regimens, respectively. SRIT15x15 induced possibly greater improvements in PSITT (+3.28%, 90%CL -0.16 to 6.82) and RSAmean (+1.17%, 90% CL -0.68 to 3.05) than SRIT7.5x7.5. In addition, SRIT15x15 resulted in a likely greater improvement in running economy (+4.33%, 90% CL -0.35 to 9.23) compared with SRIT7.5x7.5. In elite female futsal players, SRIT15x15 is a promising strategy to enhance performance-related physical fitness attributes in a shortterm period (5 weeks) during the preseason, due to its superior effects on these important aerobic and anaerobic qualities than a protocol with fewer directional changes.

Purpose. to compare the chronic (5-week) effects of two shuttle run interval training modes with one (shuttle running interval training 1, SrIt-1) and three (SrIt-3) directional changes on blood lactate responses ([La]), strength, power, and speed capacities of female futsal players. Methods. Fourteen players performed unloaded squat (SJ) and countermovement (CMJ) jumps. Isokinetic assessments of lower limbs and a single 40-m shuttle-sprint test took place before and after the training program. [La] was measured after each running set during the 1 st and 10 th training session. Results. [La] values were very likely reduced in the 10 th compared with the 1 st session in both groups. After SrIt-3, very likely moderate improvements occurred in the 40-m shuttle-sprint speed test (= +2.9%; 90% CI: 1.7-4.1), while changes were unclear following SrIt-1 (1.

Licença: Creative CommomRelação entre aptidão aeróbia e capacidade de sprints repetidos no futebol: efeito do protocolo Relationship between aerobic fitness and repeated sprint ability in soccer: protocol effectResumo -O objetivo do estudo foi investigar a associação entre variáveis fisiológicas relacionadas à aptidão aeróbia determinadas de forma contínua em corrida na esteira (pico de velocidade da esteira: PV EST , consumo máximo de oxigênio: VO 2 max, velocidade correspondente ao VO 2 max: vVO 2 max e velocidade referente ao limiar anaeróbio: vLAn) e intermitente com mudança de sentido (pico de velocidade: PV) com a capacidade de sprints repetidos (CSR) em jogadores de futebol. Vinte e nove atletas (17,9 ± 1,0 anos; 178,7 ± 5,2 cm; 73,6 ± 6,7 kg; 11,1 ± 1,3 % gordura) realizaram, em dias diferentes, os seguintes testes: 1) protocolo incremental na esteira rolante para determinar o PV EST , o VO 2 max, a vVO 2 max e a vLAn; 2) teste incremental de corrida intermitente (TCar) para determinar o PV e 3) teste de Bangsbo para avaliar a CSR e determinar o tempo médio (TM), melhor tempo (MT) e índice de fadiga (IF). Foi realizada a correlação linear de Pearson, adotando--se o valor de p<0,05 para significância. O PV obtido no TCar apresentou maior correlação com o TM e o MT (r = -0,70, p<0,01; r= -0,51, p<0,01, respectivamente) do teste de CSR, que a vVO 2 max (r = -0,43, p<0,05; r= -0,14 p>0,05) e o PV EST (r= -0,42, p<0,05; r=-0,14, p>0,05) determinados no modelo de corrida em linha reta na esteira. Pode-se concluir que a relação entre aptidão aeróbia e CSR é dependente do tipo de protocolo utilizado (contínuo em linha reta vs intermitente com mudança de sentido) e da variável aeróbia utilizada (capacidade vs potência). Palavras-chave: Aptidão aeróbia; Capacidade de sprints repetidos; Futebol; Variáveis fisiológicas. 178.7 ± 5.2 cm, 73.6 ± 6.7 kg, and 11.1 ± 1.3% p < 0.01; p < 0.01, respectively) than vVO 2 max (r = -0.43, p < 0.05; r = -0.14 p > 0.05) and PV p < 0.05; p > 0.05) determined by straight running on a treadmill. In conclusion, the relationship between physical fitness and RSA depends on the type of protocol (continuous line running vs. intermittent with directional changes) and the aerobic index used (capacity vs. power). Abstract -The aim of this study was to evaluate the association between physiological variables related to physical fitness determined by continuous straight running on a treadmill (peak velocity

Effects of four weeks of repeated sprint training on physiological indices in futsal players Efeito de quatro semanas de treinamento de sprints repetidos sobre índices fisiológicos em atletas de futsal

The purpose of the study was to analyze the relationships among physiological and neuromuscular indices with the 200- and 400-m sprint running performance. Fourteen male sprinters performed the following tests: determination of 200- (P200) and 400-m (P400) running performance; determination of VO2max and the velocity associated at VO2max; squat jump (SJ) and countermovement jump (CMJ); and maximal accumulated oxygen deficit (MAOD). Significant correlations were observed between SJ (r = -0.53), CMJ (r = -0.69), and MAOD (r = -0.65) with P200. Countermovement jump (CMJ) and MAOD explained 70% of the P200. The MAOD was the only variable to correlate significantly with P400 (r = -0.56); VO2max and CMJ were also selected in the regression together and explained 79% of P400. The indicators of muscular power and anaerobic capacity are capable of explaining P200. In the 400 m, the performance was determined by indices of anaerobic capacity, in conjunction with the athletes' aerobic and muscular power.

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