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Introduction. Inertial training is a little known strength training method. Very few research papers describing the effectiveness of inertial training have been published. Many questions regarding inertial training still remain unanswered. What do we know about the methodology of inertial training? What is the efficacy of inertial training? What are advantages and disadvantages of different inertial devices? The present study attempts to explain the concept of inertial training and recapitulate the state of current knowledge about this training method. Methods. Material for this study consisted of publications retrieved from the PubMed, Springer, SPORTDiscus, and MEDLINE databases. Results. There has been only one scientific study concerned with the optimal methodology of inertial training. In the present paper the authors discuss a method for optimal muscle loading during inertial training. However, most articles reveal a high efficacy of inertial training for strength and power improvement in a relatively short time. Inertial training can evoke functional changes and can be useful in sport practice. There have been a few types of inertial devices, and in the last five years two devices have been designed which enable the development of inertial training methodology: ITMS and Cyklotren. However, since inertial training methodology still remains insufficiently examined, further research is needed in the area. Conclusions. Considering its high effectiveness, inertial training appears to be a highly promising strength training method. However, the methodology of inertial training must be further developed. The application of the new Cyklotren inertial device can greatly facilitate this objective.
Motor abilities depend on activity of proprioceptors. The literature data suggest that proprioception is genetically determined. To test this hypothesis, 30 pairs of fathers and their sons were studied. The estimation of a force generated by a knee extensors, the control of knee position, balance at a dynamographic platform were studied before and immediately after the fatiguing running. Significant correlations between the results for groups of fathers and their sons in relation to the three abilities were found. The correlation coefficients between the recurrence of positioning the knee were 0.197 and 0.491, whereas the coefficients between the recurrence of the knee extension force were 0.695 and 0.752, before and after the fatiguing exercise, respectively. For the body balance, the strongest correlation between the average deflection point of the center of feet pressure in the front-to-back axis amounted to 0.650 and 0.731, whereas for the speed of moving the center of gravity in the sagittal plane amounted to 0.546 and 0.703 before and after exercise, respectively. Because the significant correlations were obtained for pairs of relative people these observations indicate genetic determinants of proprioception.
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