Physical fitness predicts technical-tactical and time-motion profile in simulated Judo and Brazilian Jiu-Jitsu matches (original) (raw)
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Physiological and Technical-tactical Analysis in Brazilian Jiu-jitsu Competition
Asian Journal of Sports Medicine, 2013
Purpose: The present study aims at investigating the physiological response and technical-tactical parameters in Brazilian jiujitsu competition. Methods: The study included 35 male Brazilian jiujitsu athletes (adult category, body mass: 80.2 ± 13.0 kg), graded from white to brown belt, during combats fought at regional level. Twenty-two fights were analyzed in terms of technique and time structure. Blood glucose, lactate and maximal isometric grip strength were determined before and after the fights. The rate of perceived exertion was also assessed after the fight, using the 6-20 Borg rating. The fights were recorded and the following variables were determined: the exertion/pause ratio and subjective intensity of actions, categorized between low and high intensity. Results: The results indicated that during Brazilian jiujitsu fights, the glycolytic pathway is only moderately activated (lactate before: 4.4 (4.0-4.6) mmol/L, after: 10.1 (8.0-11.3) mmol/L; glucose before: 112.4 ± 22.3 mg/dL, after: 130.5 ± 31.0 mg/dL). The exertion during the fight resulted in significant reductions in handgrip strength (right hand grip before: 45.9 ± 10.3 kgf, after: 40.1 ± 9.5 kgf; left hand grip before: 44.2 ± 11.1 kgf, after: 37.0 ± 10.2 kgf). The athletes rated the fight as hard: 15 (13-15). Effort/pause ratio was 6:1, while high-intensity actions lasted approximately 4 s, resulting in a low/high intensity? ratio of 8:1. Conclusions: It is recommended that coaches direct the training loads to simulate the energy demand imposed by the competitive matches, activating moderately the glycolytic pathway. Moreover, the time structure of combats can be used to prescribe both physical and technical-tactical training.
2018
Background and Study Aim: In Brazilian Jiu-Jitsu (BJJ) competitions are based in two models accordingly to permitted clothing. The aim of this study was knowledge about physical and physiological responses, as well as the time-motion structure and technical-tactical actions induced by gi (traditional uniform) and nogi (where “gi” it is not permitted) simulated combats. Material and Methods: Twelve male athletes (age: 23 ±5 years, body mass: 81 ±8 kg, time of practice: 8 ±2 years) in two different conditions of simulated combats (gi and nogi). Blood lactate, heart rate, lower limbs power, strength and endurance handgrip were collected to asses physical and physiological demands. Additionally, technical-tactical and time-motion was analysed. Results: Considering the physiological responses showed significant differences between moments (p<0.001), but not between conditions (p = 0.14 for heart rate, and p = 0.57 for blood lactate). For technical-tactical variables, differences betwe...
International Journal of Environmental Research and Public Health
Background: Ju-jitsu training has to be comprehensive in terms of training intensity, developing a wide range of physical fitness and learning multiple technical skills. These requirements result from the specificity of the competition characteristic of the sport form of this martial art. The aim of this study was to evaluate the aerobic capacity and special physical fitness of ju-jitsu athletes at the highest sports performance level and to determine the relationships between special fitness and the indices of technical and tactical skills. Methods: In order to determine the current level of special fitness of the athletes, a set of karate fitness tests were used, namely, the Special Judo Fitness Test and the Kickboxer Special Physical Fitness Test. Furthermore, maximal oxygen uptake (VO2peak) was measured using a graded exercise test in a group of 30 sport ju-jitsu athletes at the highest level of sports performance. To evaluate the level of technical and tactical skills, an analy...
International Journal of Environmental Research and Public Health
Background: In combat sports, successful competition and training require comprehensive motor fitness. The aim of this study was to diagnose the level of physical fitness and to determine the level of differences between athletes of combat sports characterized by stand-up fighting, such as Muay Thai; and ground fighting, such as Brazilian jiu-jitsu. Methods: The study examined and compared 30 participants divided into two equal groups: Muay Thai athletes (n = 15; age: 24.24 ± 3.24; body height: 174.91 ± 5.19; body weight: 77.56 ± 7.3), and Brazilian jiu-jitsu (BJJ) (n = 15; age: 22.82 ± 1.81; body height: 175.72 ± 7.03; body weight: 77.11 ± 8.12). Basic characteristics of the somatic build were measured. Selected manifestations of the motor potential of motor skills were also evaluated using selected tests from the EUROFIT test battery, the International Test of Physical Fitness, and computer tests of coordination skills. Relative strength and maximal anaerobic work (MAW) indices we...
Effect of Physical Endurance on the Course of Fight and Level of Sports Performance in Cadet Judokas
Archives of Budo
Background and study aim: The goal of the present study was to provide answer to the following question: Is physical capacity in judo contestants at cadet age related to the adopted fighting strategy and the level of sports achievement? Material and methods: The study covered eight judo contestants from four clubs throughout Poland. First stage involved registration of their competitive activity level. Based on this record, contestants’ fighting activity, effectiveness and level of performance were assessed. Another stage of the investigations focused on evaluation of their aerobic and anaerobic capacity measured by means of testing methods used within Instytut Fizjologii Człowieka AWF (the Institute for Human Physiology in the University School of Physical Education in Krakow). The strength of the relationship was concluded based on the value of Spearman’s rank correlation coefficient (Rs). Results: Statistical analysis revealed that the level of anaerobic capacity at the cadet age...
Physiological Responses and Rate of Perceived Exertion in Brazilian Jiu-Jitsu Athletes
2012
In this study, the physiological responses and rate of perceived exertion in Brazilian jiujitsu fighters submitted to a combat simulation were investigated. Venous blood samples and heart rate were taken from twelve male Brazilian jiujitsu athletes (27.1±2.7 yrs, 75.4±8.8 kg, 174.9±4.4 cm, 9.2±2.4% fat), at rest, after a warm-up (ten minutes), immediately after the fight simulation (seven minutes) and after recovery (fourteen minutes). After the combat the rate of perceived exertion was collected. The combat of the Brazilian jiujitsu fighters did not change blood concentrations of glucose, triglycerides, total cholesterol, low density lipoprotein and very low density lipoprotein, ureia and ammonia. However, blood levels of high density lipoprotein were significantly higher post-fight (before: 43.0±6.9 mg/dL, after: 45.1±8.0 mg/dL) and stayed at high levels during the recovery period (43.6±8.1 mg/dL) compared to the rest values (40.0±6.6 mg/dL). The fight did not cause changes in the concentrations of the cell damage markers of creatine kinase, aspartate aminotransferase and creatinine. However, blood concentrations of the alanine aminotransferase
Acute Effect of A Judo Contest on Muscular Performance Parameters And Physiological Response
Background: It is necessary to know accurately the physical effects of judo contest on athletes in order to quantify how successive judo bouts impair muscular performance parameters and physiological response associated with the aim to create specific training programs that take the demands of judo bout into account. Purpose: The purpose of current study was to characterise the evolution of muscular performance parameters and physiological response during a judo contest. Methods: Twenty-nine men performed five 5-minute bouts with 15 minutes of passive rest. Immediately after the bouts, some muscular performance parameters and physiological variables were measured, in this order: Borg´s rate of perceived exertion (RPE), maximal dynamic strength in upper body (MDS), countermovement jump (CMJ), dominant (DHS) and non-dominant handgrip isometric strength (NDHS). Lactate (LAC) was measured 3 minutes after each bout and 1 minute before the next too). Heart rate (HR) was monitored during the contest. ANOVA to compare baseline test data and successive bouts was used. Results: ANOVA revealed significant differences in HRmean (p=0.045), LAC (p<0.001) and in RPE (p<0.001). A decrease in NDHS (p<0.001), DHS (p<0.001), MDS (p<0.001) was found. Some significant correlations were found between NDHS and DMPV (r=0.368, p=0.050), DMS (r=0.369, p=0.050) and DMXS (r=0.405, p=0.029); between DHS and DLACb (r=0.430, p=0.020), DMXS (r=0.379, p=0.043), DMP (r=0.369, p=0.050) and DRPE (r=0.456, p=0.013); between CMJ and DPM (r=0.381, p=0.041), DPMX (r=0.417, p=0.024), DFM (r=0.423, p=0.022) and DDHS (r=0.348, p=0.040). These results show a high decrease of muscular performance parameters and an increase of physiological parameters, specially between baseline test and postbout 5, but gradual between all bouts. Conclusion: Judo contest can be considered a high intensity exercise, due to high levels of physiological parameters and the decrease in force production obtained.
The aim of the present short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs. training), combat rounds, age of participants and muscle groups and their correlation with physiological variables (i.e., blood lactate concentration [La] and heart rate [HR]). The current review shows higher RPE in a match of mixed martial arts (MMA) than Brazilian jiu-jitsu and kickboxing matches and during the competitive period compared to the pre-competitive period. This could be explained by the longer duration of bouts, the higher percentage contribution of aerobic metabolism in MMA than other combat sports and contest type differences (simulated vs. official matches). Thus, the present review found significant correlations between RPE or session-RPE, [La] and HR. Particularly, there was a stronger correlation between RPE and [La] during official striking (r=0.81) than grappling combat sports matches (r=0.53). In addition, a variation of correlation (moderate to large) between session-RPE and HR-based methods has been reported [i.e., Edwards training-load (r ranged between 0.58 and 0.95) and Banister training impulse (TRIMP, r ranged between 0.52 and 0.86)]. Specifically, stronger correlation was apparent in combat sport competition that required a much higher percentage contribution of aerobic metabolism (e.g., karate) and in adult athletes than anaerobic-based combat sports (e.g., taekwondo) and young athletes, respectively. Indeed, the current review highlights that the correlations between session-RPE and HR-based methods were higher during official competition than training sessions.