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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.
In this work the energetics of water transport along the radial path of bean root (Phaseolus vulgaris L) and water elevation along the xylem induced by osmotically generated root pressure was studied. The radial path of the root was, according to Fiscus's concept [1,2], approximately modelled by a 1-membrane system. An analytical method by Kargol [5] (concerning the osmo-diffusive conversion of free energy) and data from a work by Steudle [9] (on permeation parameters of the root, i.e., filtration coefficient Lp, reflection coefficient a and permeability coefficient co) were applied in this study. This work shows that the energetical efficiency of the root of that plant does not depend on concentration, C0 of the root bathing solution (the medium) within the concentration range: 0
The transmission-disequilibrium test (TDT) is a model-free method to detect linkage between a marker and a trait locus. Originally developed to map disease genes in human genetics, this statistic has been recently extended to deal with quantitative characters. The emphasis of current research is on investigating statistical properties of the test applied to data from livestock populations. For various constellations of sample parameters, it is shown via simulation that the empirically derived null hypothesis distribution of TDT remains in good agreement with its asymptotic distribution while its power is satisfactory only for very close linkage. TDT is then applied to a real data set from milk production data of a dairy cattle population.
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