Freitas, TT, Pereira, LA, Alcaraz, PE, Comyns, TM, Azevedo, PHSM, and Loturco, I. Change-of-direction ability, linear sprint speed, momentum in elite female athletes: differences between three different team sports. J Strength Cond Res 36(1): 262-267, 2022-The aim of this study was to compare the performance players from 3 sports change-of-direction (COD) tests examine their efficiency for changing direction through calculation COD deficit (i.e., difference velocity a task equal distance)....

Freitas, TT, Pereira, LA, Alcaraz, PE, Azevedo, PHSM, Bishop, C, and Loturco, I. Percentage-based change of direction deficit: a new approach to standardize time- velocity-derived calculations. J Strength Cond Res 36(12): 3521-3526, 2022-Change (COD) efforts are crucial in team sports, an extensive body research has been devoted investigating this complex multifaceted skill. Most studies have assessed players' ability by reporting completion time or average velocity different COD tasks....

The aim of this study was to compare the number repetitions volitional failure, blood lactate concentration, and perceived exertion resistance training with without an airflow-restricting mask.Eight participants participated in a randomized, counterbalanced, crossover study. Participants were assigned mask group (MASK) or control (CONT) completed five sets chest presses parallel squats until failure at 75% one-repetition-maximum test (1RM) 60 s rest between sets. Ratings (RPEs),...

To investigate the effects of a match-congested period on straight and curve sprint performance, change direction (COD) speed deficit, vertical jumping ability, half-squat (HS) mean propulsive power (MPP) output in young soccer players.A total 15 under-20 elite male players participated 14 matches over 8 weeks. The following assessments were performed before after congested fixture period: squat countermovement jumps, 17-m linear sprint, test for "good" (CSGS) "weak" (CSWS) sides, modified...

Pereira, LA, Freitas, TT, Zabaloy, S, Ferreira, RCA, Silva, ML, Azevedo, PHSM, and Loturco, I. Sprint jump training on sand versus grass surfaces: effects the physical performance of young soccer players. J Strength Cond Res 37(9): 1828-1833, 2023-The aims this study were to (a) examine a 6-week program including both sprint exercises speed-related vertical elite players (b) compare changes induced by scheme with those similar (in volume, intensity, exercise types) performed grass....

Abstract Training volume is one of the critical variables required to promote resistance training benefits (e. g., hypertrophy, muscular strength). Thus, strategies improve are required. We tested hypothesis that there an increase in performance and reduction rate perceived exertion strength with caffeine supplementation, carbohydrate mouth rinse, a synergistic effect supplementation plus rinse. recruited 29 physically active women: 24±4 years, 60.0±7.9 kg, 161.0±6.0 cm. This study was...

Abstract This study investigated the effects of inspiratory muscle pre-activation (IM PA ) on interactions among technical-tactical, physical, physiological, and psychophysiological parameters in a simulated judo match, based centrality metrics by complex network model. Ten male athletes performed 4 experimental sessions. Firstly, anthropometric measurements, maximal pressure (MIP) global strenght muscles were determined. In following days, all four-minute video-recorded matches, under three...

It is well established that caffeine has ergogenic effects on endurance performance. This evidence often comes from studies in which subjects receive either or placebo double-blind, randomized and counterbalanced order. Here, we propose a new methodology aims to estimate the of participant expectancy anti-ergogenic performance.Sixteen physically active participants (non-athletes engaged systematic physical training >3 months, at least three times week) performed 30-minute running tests after...

The purpose of this study was to verify whether cooling between sets during high-intensity resistance exercise improves physical performance and compare among different sites cooling. It is important because delaying the muscular fatigue could improve total volume at a training session which lead greater hypertrophy. Nine healthy recreational experienced men, performed six tests biceps curl on days. first test one-repetition maximum (1RM). Following, we applied five sessions, in crossover...

Fatigue in physical exercise is not only a event but also emotional, regulated by rating of perceived exertion (RPE). Currently the transcranial direct current stimulation (tDCS) has been used research on to check responses neuromodulation central nervous system, reducing fatigue and improving performance. The application anodal tDCS insular cortex, one areas responsible for awareness subjective feelings body, shown decreased RPE increased aerobic PURPOSE: To determine whether brain with...

Freitas, TT, Pereira, LA, Alcaraz, PE, Cadore, EL, Grazioli, R, Azevedo, PHSM, Jeffreys, I, and Loturco, I. Interrelationships between multiple speed tests in youth soccer: Are players equally efficient at performing different sprint COD tasks? J Strength Cond Res 37(4): 848-853, 2023-We investigated the relationships linear multidirectional elite young soccer players, using measurements their associated deficits. Twenty-three under-17 17 under-16 performed, on same day, 17-m (with 10-m...

Os testes de hipótese nula são amplamente empregados para análise dados na área ciência do esporte. Porém, a aplicação desse método tem sido questionada comunidade científica. De fato, esse tipo não permite uma interpretação prática das mudanças observadas ao longo tempo. Por conta disso, o cálculo da “inferência baseada em magnitude” (IBM) vem sendo cada vez mais utilizado por pesquisadores e analistas desempenho. Em perspectiva aplicada, IBM avaliar probabilidade se encontrar diferenças...