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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

vol. 15

issue 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.

IDENTIFYING TALENTED HANDBALL PLAYERS – THE POSSIBILITIES OF EXAMINING THE PLAYERS BY MEANS OF SPEED-FORCE AND COORDINATION TESTS

88%

Zubik M., Spieszny M., Sumara M.

Central European Journal of Sport Sciences and Medicine

2013

vol. 4

issue 4

53-62

The main aim of this thesis was to assess the usefulness of the chosen tests of motor skills (focused mainly on the work of the lower and upper limbs) and the computerized motor skills tests in identifying the talented handball players. To examine them, the players’ results from two junior teams were compared. The first test was performed before the players started high school, that is, at the age of sixteen. The results were compared with the sport level examined during the second test, performed when the players reached the senior age (nineteen years old). The Spearman’s rank correlation coefficient among the ranking results (sport level), somatic features and motor skills, was used in the analysis, with the level of statistical significance being p<0,05. Significant statistical correlations were discovered between the level of anaerobic force of the examined handball players when they are sixteen, and their sport level when they are nineteen years old. The significant statistical correlations may be one reason to use the tests of speed-force skills to identify the talented handball players described in this thesis. Among the coordination skills, only the multitasking ability proved to have significant statistical correlations with the players’ sport level.

Diagnostics of reactive and running agility in young football players

88%

Horicka P., Simonek J., Brodani J.

Physical Activity Review

2018

vol. 6

29-36

Authors in their contribution deal with the issue of reactive and running agility in sport. Upon constructing the methods of research we assumed that players ́ performances in running agility (Illinois test) should increase with the age of soccer players. W e expected that we shall not prove this tendency in the level of reaction agility (FAC) with regard to the fact that performance in reaction agility is limited, besides motor, also by other prerequisites such as perception, state of receptors, sensoric and autonomous functions, spinal and supraspinal levels of motor system. We also expected that there wil be no proved relationship between these tests ́ results in any age category. The level of performance in running and reactive agility increases with age; t he increase is smooth in running agility and cascaded in reactive agility starting with the 14 yrs. category. We also noted a downward tendency in the correlation between running and reactive agility with increasing age. This decline is most evident from t he 14 th year of age. The relationship between running and reaction agility was not observed in the study group from the age of 13. Coaches are recommended to switch over to the specific development of agility using the way of weakening anticipation ability of the player and to replace exercises with closed -loop skills by the ones of open -loop skills.

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1 Central European Journal of Sport Sciences and Medicine

1 Human Movement

1 Physical Activity Review

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1 Andrzejewska J.

1 Brodani J.

1 Burdukiewicz A.

1 Horicka P.

1 Pietraszewska J.

1 Simonek J.

1 Spieszny M.

1 Stachoń A.

1 Stefaniak T.

1 Sumara M.

1 Witkowski K.

1 Zubik M.

Search results

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

IDENTIFYING TALENTED HANDBALL PLAYERS – THE POSSIBILITIES OF EXAMINING THE PLAYERS BY MEANS OF SPEED-FORCE AND COORDINATION TESTS

Diagnostics of reactive and running agility in young football players