ORCID Profile
0000-0002-2033-365X
Current Organisations
Universidade de São Paulo
,
Centro Universitário Cesmac
,
Uninassau
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Publisher: Informa UK Limited
Date: 19-07-2021
Publisher: Elsevier BV
Date: 08-2019
DOI: 10.1016/J.JSAMS.2019.03.007
Abstract: This study is a systematic review and meta-analysis aimed at investigating the isolated effects of caffeine and sodium bicarbonate (NaHCO Following a search through PubMed and Scopus, 13 studies (7 with caffeine and 6 with NaHCO The meta-analysis indicated that caffeine ingestion did not improve the total work done (weighted average effect size Hedges's g = -0.01, 95%CI: -0.32 to 0.31, p = 0.97), best sprint (weighted average effect size Hedges's g = -0.02, 95% CI: -0.32 to 0.27 p = 0.87) or last sprint performance (weighed average effect size Hedge's g = -0.27, 95%CI: -0.68 to 0.14 p = 0.20), when compared with a placebo condition. Similarly, NaHCO This meta-analysis provides evidence that repeated sprint ability is not affected by acute ingestion of caffeine or NaHCO
Publisher: SAGE Publications
Date: 19-12-2016
Abstract: This study aimed at describing the changes in physical and physiological performance of a two-time World Karate Federation Ch ion athlete immediately prior to and after a bout simulation. The karateka was submitted to: (a) squat and countermovement jumps, jump squat and bench throw and maximal isometric force tests (half-squat and bench press, pre and post-match) (b) one simulated karate match. Improvements of 1.1% and 2.9% were observed in the squat jump and countermovement jumps, respectively, after the combat simulation. For jump squat, an increase in power production was observed after the simulation (0.6–7.4%). Conversely, for the bench throw a decrease in power was detected after the match (0.5–8.3%). The maximal isometric force increased for the half-squat (10.5%) and bench press exercises (1.6%). The investigated athlete presented quite different characteristics when compared to similarly highly trained peers, and these traits can probably explain his “outlier performance”.
Publisher: Informa UK Limited
Date: 13-10-2018
DOI: 10.1080/02640414.2018.1524739
Abstract: The aim of this study was to perform a systematic review and meta-analysis on the acute and chronic effects of sodium bicarbonate (NaHCO
Publisher: Springer Science and Business Media LLC
Date: 02-02-2019
Publisher: Informa UK Limited
Date: 27-07-2022
DOI: 10.1080/10408398.2022.2104807
Abstract: While the effects of caffeine ingestion on endurance performance are well known, its effects on cardiopulmonary responses during a maximal graded exercise test have been less explored. This study systematically reviewed and meta-analyzed studies investigating the effects of caffeine ingestion on cardiopulmonary responses during a maximal graded exercise test. A search was performed in four databases, and study quality was assessed using the PEDro scale. Data reported by the selected studies were pooled using random-effects meta-analysis, with selected moderator effects assessed via meta-regression. Twenty-one studies with good and excellent methodological quality were included in this review. Compared to placebo, caffeine increased peak minute ventilation (SMD = 0.33 p = 0.01) and time to exhaustion (SMD = 0.41 p = 0.01). However, meta-regression showed no moderating effects of dosage and timing of caffeine ingestion, stage length, or total length of GXT (all p > 0.05). Caffeine ingestion did not affect peak oxygen uptake (SMD = 0.13 p = 0.42), peak heart rate (SMD = 0.27 p = 0.07), peak blood lactate concentration (SMD = 0.60 p = 0.09), peak tidal volume (SMD = 0.10 p = 0.69), peak breathing frequency (SMD =0.20 p = 0.23), or peak power output (SMD = 0.22 p = 0.28). The results of this systematic review with meta-analysis suggest that caffeine increases time to exhaustion and peak minute ventilation among the cardiopulmonary variables assessed during GXT.
Publisher: Public Library of Science (PLoS)
Date: 27-02-2019
Publisher: MDPI AG
Date: 15-10-2021
DOI: 10.3390/SU132011403
Abstract: Although current physical activity (PA) guidelines regarding aerobic and anaerobic training are helpful for the population at large, many in iduals prefer to engage in alternative forms of PA such as combat sports. As both a martial art and sport, judo is a physically demanding form of PA that potentially offers a novel experience, consequently leading to greater PA adherence. This study aimed to thoroughly search the existing literature to determine the health benefits of judo-specific training. PubMed and Web of Science were searched for original research studies. Only peer-reviewed studies that examined the effects of judo training in males and females aged 18–35 were included in the study. Out of 507 potentially relevant studies, 84 studies met our inclusion criteria and were further analyzed. Data showed that judo athletes and recreational judo practitioners show above-average VO2max, improved body composition, increased bone mineral density, and bone mineral content. Judo is associated with a sequence of adaptations in cardiac structure, function, and blood pressure changes. More research is needed to discover if these changes are maladaptive.
Publisher: Public Library of Science (PLoS)
Date: 05-11-2015
Publisher: Canadian Science Publishing
Date: 02-2019
Abstract: The aim of this study was to evaluate if caffeine can reduce the negative influence of diurnal variations on repeated-sprint performance, in addition to investigating if caffeine in the afternoon would potentiate performance compared with the morning. Thirteen physically active men took part in this randomized, double-blind, placebo-controlled and crossover study. All participants underwent a repeated-sprint ability test (10 × 6 s cycle sprints, with 30 s of rest) at 60 min after ingestion of either 5 mg·kg −1 or placebo under 4 different conditions: morning with caffeine ingestion, morning with placebo ingestion, afternoon with caffeine ingestion, and afternoon with placebo ingestion. Total work, peak power (PP) and anaerobic power reserve (APR) were assessed. Oxygen uptake, heart rate, lactate concentration, and rating of perceived exertion were also measured during the repeated-sprint test. Total work (+8%, d = 0.2, small), PP (+6%, d = 0.2), and APR (+9%, d = 0.2) were significantly higher in the afternoon when compared with morning. However, physiological responses were not different between caffeine and placebo conditions. Repeated-sprint (10 × 6 s cycle sprint) performance was influenced by time of day, with lower performance in the morning compared with the afternoon. However, caffeine supplementation did not prevent the reduction in performance in the morning or improve performance in the afternoon.
Publisher: Informa UK Limited
Date: 20-01-2018
DOI: 10.1080/17461391.2018.1424942
Abstract: To investigate the effect of sodium bicarbonate (NaHCO Nine taekwondo athletes completed two experimental sessions separated by at least 48 h. Athletes consumed 300 mg/kg body mass of NaHCO [La NaHCO
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 18-11-2022
Publisher: Informa UK Limited
Date: 02-02-2021
DOI: 10.1080/17461391.2021.1874058
Abstract: The aim of this study was to investigate the effects of caffeine ingestion on upper-body intermittent strength endurance performance of combat sports athletes. Using a double-blind and placebo-controlled crossover design, ten experienced judo and jiu-jitsu athletes performed an upper-body intermittent strength endurance protocol (four set of judogi dynamic strength endurance test, interspersed by 3-min recovery intervals) 60 min after ingesting either caffeine (5 mg·kg
Publisher: Springer Science and Business Media LLC
Date: 15-04-2022
Publisher: Mary Ann Liebert Inc
Date: 12-2021
Publisher: Elsevier BV
Date: 02-2015
DOI: 10.1016/J.PHYSBEH.2014.11.048
Abstract: We examined the effects of listening to music on time to exhaustion and psychophysiological responses during moderate-intensity exercise performed in fatigued and non-fatigued conditions. Fourteen healthy men performed moderate-intensity exercise (60% Wmax) until exhaustion under four different conditions: with and without pre-fatigue (induced by 100 drop jumps) and listening and not listening to music. Time to exhaustion was lower in the fatigued than the non-fatigued condition regardless listening to music. Similarly, RPE was higher in the fatigued than the non-fatigued condition, but music had no effect. On the other hand, listening to music decreased the associative thoughts regardless of fatigue status. Heart rate was not influenced by any treatment. These results suggest that listening to music changes attentional focus but is not able to reverse fatigue-derived alteration of performance.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-2016
Publisher: MDPI AG
Date: 22-07-2014
DOI: 10.3390/NU6072931
Publisher: Springer Science and Business Media LLC
Date: 31-01-2022
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 09-2017
Publisher: University of Leon
Date: 23-03-2021
DOI: 10.18002/RAMA.V16I1S.7001
Abstract: This chapter describes the physiological responses associated with anaerobic power and capacity of combat sports athletes from different modalities (judo, Brazilian jiu-jitsu, wrestling, Olympic boxing, karate, and Muay Thai) during specific situations. Next, the most used evaluation methods for the control and monitoring of these variables are presented. Finally, based on longitudinal studies that evaluated the effects of anaerobic power and capacity training of combat sports athletes, the main training approaches are presented.
Publisher: Public Library of Science (PLoS)
Date: 19-08-2013
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 06-2021
DOI: 10.1519/JSC.0000000000002948
Abstract: Lopes-Silva, JP, Panissa, VLG, Julio, UF, and Franchini, E. Influence of physical fitness on Special Judo Fitness Test performance: a multiple linear regression analysis. J Strength Cond Res 35(6): 1732–1738, 2021—The purpose of this study was to identify the physical fitness variables that best predict Special Judo Fitness Test (SJFT) performance. Thirty-five male experienced judo athletes took part in this study. All athletes performed 5 tests: upper- and lower-body cycle ergometer graded exercise tests upper- and lower-body Wingate tests and SJFT. The peak oxygen consumption (V̇ o 2 peak), maximum heart rate (HRmax), maximum aerobic power, and the variables corresponding to onset blood lactate accumulation (OBLA) were determined during the graded exercise tests. For the Wingate tests, peak power (PP) and mean power were used. Furthermore, the total number of throws, heart rate (HR) immediately and 1 minute after, and SJFT index were calculated. Four separated forward multiple linear regressions (forward model) were used to identify the physical fitness variables that best explained the SJFT variables. Upper-body V̇ o 2 peak (ml·min −1 ·kg −1 ) explained 27% of variance in the total number of throws, whereas an additional 7% was explained by upper-body PP. Upper-body HRmax explained 46% of the variance in the HR immediately after the SJFT, whereas lower-body HR at OBLA accounted for an additional 8%. Lower-body HRmax explained 21% of the variance in the HR 1 minute after the SJFT, whereas peak lactate ([La − ] peak ) after the lower-body graded exercise test accounted for an additional 12%. Upper-body V̇ o 2 peak (ml·min −1 ·kg −1 ) alone accounted for 15% of the variance in the SJFT index. Based on these results, the data suggest that physical fitness variables, derived from upper- and lower-body aerobic and anaerobic tests, have a small ability to predict the SJFT variables.
Publisher: Human Kinetics
Date: 03-2016
Abstract: The combined supplementation of caffeine (CAF) and sodium bicarbonate (NaHCO 3 ) may have a potential ergogenic effect during intermittent-exercise tasks such as judo however, its effect in this sport has not been tested. To investigate the isolated and combined effects of CAF and NaHCO 3 on judo performance. Ten judokas performed 4 supplementation protocols—NaHCO 3 , CAF, NaHCO 3 + CAF, and placebo (PLA) (cellulose)—followed by 3 Special Judo Fitness Tests (SJFTs) interspaced with 5 min rest. In the first SJFT, the combined supplement (NaHCO 3 + CAF) resulted in a higher number of throws than with PLA (24.4 ± 0.9 and 23.2 ± 1.5 throws, respectively, P = .02). There was no significant difference between conditions for the 2nd SJFT ( P = .11). In the 3rd SJFT, NaHCO 3 and NaHCO 3 + CAF resulted in more throws than with PLA (23.7 ± 1.6, 24.4 ± 1.0, and 22.0 ± 1.6 throws, P = .001 and P = .03, respectively). When the total throws performed in the 3 SJFTs were summed, they were higher than PLA only for NaHCO 3 + CAF (68.8 ± 4.4 and 72.7 ± 3.1 throws, respectively, P = .003). Postexercise plasma lactate after each SJFT was higher in all experimental conditions than with PLA ( P = .001). There was no significant difference in rating of perceived exertion across the conditions ( P = .18). The results of the current study show that the combined supplementation of NaHCO 3 + CAF increases judo performance compared with PLA.
Publisher: Informa UK Limited
Date: 24-01-2023
Publisher: Elsevier BV
Date: 05-2023
Publisher: Informa UK Limited
Date: 06-06-2022
Publisher: Informa UK Limited
Date: 06-04-2020
Publisher: Informa UK Limited
Date: 27-05-2022
Publisher: Public Library of Science (PLoS)
Date: 15-12-2015
Publisher: Public Library of Science (PLoS)
Date: 07-10-2014
Publisher: SAGE Publications
Date: 29-03-2023
DOI: 10.1177/00315125231165170
Abstract: This study was conducted to determine whether the relative age effect (RAE) is present in different age groups, weight categories, sexes, and across different time frames in international-level judo competition. A total of 9451 judo athletes competing at the Olympic Games and/or World Ch ionships in the Cadet, Junior and/or Senior age groups between 1993 and 2020 were considered. Athletesʼ birthdate distributions were grouped in four quartiles (Q1: January-March Q2: April-June Q3: July-September Q4: October-December) and compared to a day-corrected theoretical distribution using Chi-squared analysis. Poisson regression was also used to evaluate the ability to explain weekly birth count. RAE was more prevalent in males than females ( p .05), and for Cadets and Juniors compared to Seniors ( p .05). Heavyweight and middleweight categories presented RAEs in Senior and Junior males, while for females it was present in Cadet heavyweights ( p .05). RAE was more prevalent in recent years (2009–2021) for Senior male judo athletes ( p .05). Poisson analysis illustrated some nuanced information, including RAE detection during an earlier time frame, not readily apparent with the traditional analysis.
No related grants have been discovered for João Paulo Lopes-Silva.