Intensive specific maximal judo drills improve psycho-motor ability but may impair hand grip isometric strength
PBN-AR
Instytucja
Instytut Sportu - Państwowy Instytut Badawczy
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Ido Movement for Culture. Journal of Martial Arts Anthropology
ISSN
1730-2064
EISSN
2082-7571
Wydawca
Stowarzyszenie Idokan Polska
DOI
Rok publikacji
2015
Numer zeszytu
2
Strony od-do
52-58
Numer tomu
15
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Liczba arkuszy
0,5
Autorzy
Pozostali autorzy
+ 2
Słowa kluczowe
en
judokas, explosive strength, multiple choice time responses, handgrip strength, preparatory training
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Język
en
Treść
Introduction. This study aimed to examine the effect of a 5-week preparatory training period on arm explosive strength, isometric hand grip strength force and multiple choice time responses among elite male judo contestants. Material and methods. Eleven senior male judokas were enrolled to the study twice, i.e. before and after a 5-week preparation to a competition. During these sessions judokas performed in a randomized order three tests separated by 15-minute intervals for recovery: (i) the test of series of maximal motions performed separately and vigorously by left and right upper extremity. These type of motions (jerks) are usually part of some offensive actions (throws) in a judo struggle. The jerks were evoked by two types of light stimuli, during which concurrent measurements of time movement and maximal strength generated by left or right hand during the test were conducted, (ii) multiple visuo-motor time responses to series of 49 various consecutive light stimuli, (iii) maximal hand grip strength. Plasma cortisol (C) and testosterone (T) were determined in capillary blood sampled prior to and 5 minutes after the test of jerks. Age-and weight-matched students (n=8) examined twice served as a control group for the comparisons with judokas regarding handgrip strength and visuo-motor ability. Results. After the training period significant improvements were noted for time movement in the test of jerks (by 10%) and shorter visuo-motor time responses (by 7.6%). During the 2nd examination peak of force in the test of jerks was unchanged, while maximal grip strength for right hand was significantly declined from 51.8±11.3 to 50.7±11.5 kg. The test of judo jerks did not affect C but elicited a rise in T during the 2nd examination. Scores of time movements recorded in judo jerks and visuo-motor time responses correlated significantly (r=0.827). Compared to control group judokas demonstrated significantly higher isometric hand grip strength but comparable scores in visuo-motor ability. Moreover, the control group showed very similar scores of the tests during both examinations. Conclusions. The training period with intensive judo-specific drills that engage cognitive functions and require hand’s maximal static efforts improve psycho-motor ability but may impair hand grip strength.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
553830
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