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Body Build and the Level of Development of Muscle Strength Among Male Jiu-Jitsu Competitors and Strength-Trained Adults

100%

Pietraszewska J. , Burdukiewicz A. , Stachoń A. , Andrzejewska J. , Stefaniak T. , Witkowski K.

Human Movement

2014

tom 15

nr 3

134-140

Purpose. The aim of the present study was to assess the morpho-functional characteristics of male jiu-jitsu practitioners against a sample of strength-trained university students. Methods. The all-male research sample included 49 jiu-jitsu competitors and 30 university students actively involved in strength training. Measures of body mass and height, lower extremity length, sitting height, arm span, trunk width, skeletal breadths, circumferences and skinfold thicknesses of the trunk and extremities were collected. Body tissue composition was assessed using bioelectrical impedance analysis. Somatotype was classified according to the anthropometric method of Heath and Carter. Participants also performed three motor tests composed of the standing long jump, flexed arm hang, and sit-ups and two dynamometer tests measuring handgrip and back muscle strength. Differences between the measured characteristics in both samples were analyzed using Student’s t test. Pearson’s correlation coefficient was used to the determine the relationships between the morphological characteristics and the results of the motor tests. Results. The jiu-jitsu sample was slightly smaller than the strength-training students. In contrast, body mass was almost identical in both groups. The remaining length, height, and skinfold characteristics also did not differ significantly between the groups. Only hip breadth was significantly larger in the jiu-jitsu sample. No between-group differences were noted in the levels of endomorphy, mesomorphy, and ectomorphy. The composite somatotype of the jiu-jitsu athletes (2.1-5.8-2.0) was very similar to that of the strength-trained students (2.1-5.9-2.4). Statistically significant differences were observed in the tests assessing muscle strength. Handgrip and back muscle strength was greater in the strength-training students, whereas the jiu-jitsu athletes performed better in all three motor tests. Conclusions. The minor morphological differences between the jiu-jitsu and strength-training groups may be due to the different sporting level of the participants. Whereas the intense weight training regime of the strength-training students allowed them to achieve higher results in the dynamometer tests, the more multidimensional aspect of jiu-jitsu training was reflected in achieving better results in the motor tests.

Analysis of Muscle Damage and Strength in Training and Competition simulation in Brazilian Jiu Jitsu Athletes

63%

Fonseca L. B. , Aidar F. J. , Gama de Matos D. , de Almeida Barros N. , de Souza R. F. , Santos O. A. , Lopes dos Santos J. , de Araujo Tinoco Cabral B. G. , Marcal A. C. , Machado R. V.

Ido Movement for Culture. Journal of Martial Arts Anthropology

2022

tom 22

nr 3

20-27

Background. It is important to evaluate the specificity of the training and its relationship with the competition variables in Jiu Jitsu athletes. Problem and aim. The objective was to analyze muscle damage, strength, and their correlation under two distinct conditions, a specific training session and a competition simulation session. Methods. The study sample included nine subjects (22.50±2.84 years) that were submitted to the following two interventions: 1. simulation of training and 2. simulation of competition. Results: It can be observed that there were no significant differences in the Counter Movement Jump (CMJ) test; however, 48 h after training, higher values than those in the week of the competition were observed. Regarding Creatine Quinase (CK) levels, there were significant differences after competition in relation to the other time points and the intervention (p=0.004), with a high effect. The Lactate Dehydrogenase (LDH) levels, there were significant differences in post-competition and pre-competition in relation to pre- and post-training (p=0.019), with a high effect. It was observed that the power in the upper limbs (PUL) results showed a median correlation 24 (0.554) and 48h (0.473) after the intervention. The Squat Jump (SJ) test results showed a high correlation (0.716), and the other test results showed a very high correlation (>0.8). All variables presented a very high correlation at both time points of the study. Only the variable LDH level, 48 h later, presented a high correlation. Conclusion. It was concluded that a good correlation exists between training simulation and competition simulation, where the model adopted as training can meet the needs imposed in the competition.

Tło. Ważne jest, aby ocenić specyfikę treningu i jego związek ze zmiennymi zawodów u sportowców Jiu Jitsu. Problem i cel. Celem pracy była analiza uszkodzeń mięśni, siły i ich korelacji w dwóch różnych warunkach, określonej sesji treningowej i sesji symulacji zawodów. Metody. Próba badawcza obejmowała dziewięć osób (22,50±2,84 lat), które zostały poddane dwóm interwencjom: 1. symulacja treningu i 2. symulacja rywalizacji. Wyniki: Można zaobserwować, że nie było istotnych różnic w teście skoku z kontrruchem (CMJ); jednak 48h po treningu zaobserwowano wartości wyższe niż w tygodniu zawodów. Jeśli chodzi o poziomy kinazy kreatynowej (CK), po zawodach wystąpiły istotne różnice w stosunku do innych punktów czasowych i interwencji (p=0,004), z wysokim rezultatem. Stężenia dehydrogenazy mleczanowej (LDH) były istotne po zawodach i przed zawodami w stosunku do stanu przed i po treningu (p=0,019), z wysokim rezultatem. Zaobserwowano, że wyniki mocy w kończynach górnych (PUL) wykazały medianę korelacji 24 (0,554) i 48h (0,473) po zabiegu. Wyniki testu skoku z przysiadu (SJ) wykazały wysoką korelację (0,716), a wyniki pozostałych testów wykazały bardzo wysoką korelację (>0,8). Wszystkie zmienne charakteryzowały się bardzo wysoką korelacją w obu punktach czasowych badania. Jedynie zmienny poziom LDH 48 h później wykazywał wysoką korelację. Wniosek. Stwierdzono, że istnieje dobra korelacja pomiędzy symulacją treningu a symulacją zawodów, gdzie model przyjęty jako trening może zaspokoić potrzeby narzucone podczas zawodów