Abstract des Autors

It is well known that delayed onset muscle soreness (DOMS) leads to a significant reduction of voluntary muscular strength. Therefore it is of interest if the trainability is affected as well. In 45 healthy male test persons a delayed onset muscle soreness of the forearm flexors was induced experimentally by means of a standardized negative dynamic training of 30 min. Two groups of test persons (n=15 each) additionally carried out an isometric training of 4 days each, the one starting with the 1st, the other starting with the 7th day after the induction of the delayed onset muscle soreness. Another 15 test persons served as controls without any training. Among others, the strength of the forearm flexors of both arms was controlled before and after the training by means of voluntary maximum contractions each of 1-sec-duration. The training effect was defined as the difference of strength between the training groups and the controls 14 days after the onset of training. The initial loss of the mean maximum muscle strength was similar in all groups (p=0,828, ANOVA). The group that started the isometric training on the 7th day after the induction of DOMS exhibited a significant training effect of 8,3% (p=0,023), however, the group starting the isometric training on the 1st day had no training effect. lt is concluded that the trainability is suspended immediately after the induction of delayed onset muscle soreness, however, it is restored within 7 days. Verf.-Referat