Copper is an essential element, a constituent of all living cells and an integral component of many enzymes. The increase in pollution of the environment, and various metabolic diseases, imbalances biological processes and homeostatic regulated content of bioelements in the body. For the purpose of determining changes in the contents of bioelements with increased intake of copper, the paper followed by interaction before and after ingestion of copper. The results showed that copper in excess causes disruption of physiological interactions of bioelements in tissues and significantly increases the content of iron and magnesium. The nature and relationships of these interactions are important, because in terms of exposure to metals, there are changes in their mutual relations, with some of these antagonistic relationships may be utilized for further study in order to protect them from toxicity.

The aim of the research was to use a system of 25 variables of morphological characteristics on a sample of subjects numbering 200 top athletes, all males (50 handball players,50 volleyball players, 50 basketball players, 50 soccer players), aged 18 to 30, in order to determine their factor structure, which would be in aid of more rational procedures for the continual selection of athletes in these sports and the transformational training process. By means of the component analysis (the direct oblimin) and the GK criterion (ë≥1.00) used to obtain the common characteristic roots and the explained segments of common variance, five latent variables were isolated for the handball players (body mass and voluminosity and the subcutaneous fatty tissue of the upper body, the longitudinal dimension of the skeleton, the subcutaneous fatty tissue of the lower extremities and upper àrm, the transverse dimension of the lower extremities, the transverse dimension of the elbow and shoulder), six latent variables for the volleyball players (the transverse dimension of the wrist and body volume and mass, subcutaneous fatty tissue of trunck, longitudinal dimension of skeleton, the transverse dimension of knee and foot length, lower leg skin folds and fatty tissue of the upper arm,elbow diameter), another five latent variables for basketball players (the longitudinal dimension of the skeleton, body mass and voluminosity and subcutaneous fatty tissue of the trunck, the subcutaneous fatty tissue of the lower extremities and upper arm, transverse dimension of the lower extremities and the wrist, the transverse dimension of pelvis) and six latent variables for the soccer players (the longitudinal dimension of the skeleton, the subcutaneous fatty tissue of the lower extremities and upper arm, body mass and voluminosity, the transverse dimension of the legs, shoulder and hand, the subcutaneous fatty tissue of the trunck, transverse dimension of the arms). On the basis of the identified factor structures of the latent variables, it can be concluded that we are dealing with a case of different morphological structures of the different athletes. 

Because of it’s anabolic and lipolytic effects and with the beginnings of the production of recombinant growth hormone for the treatment of many congenital diseases began and growth hormone abuse in sport. His contributions to enhancing the physical performances of athletes are debatable, and there are many side effects. Detection of growth hormone use as doping agents is impossible by standard means of doping because of the identity of its recombinant and natural forms. There are various tests measuring its isoforms and collagen peptide, while the use of carbon isotope is still under investigation. Efficient detection tests, the use of "athlete passport" and education of athletes, are good way to prevent misuse of growth hormone.

It is known that the intoxication with heavy metals and pesticides is most often unmedical poisoning. In contrast to other heavy metals, for example: mercury, lead, cadmium and zinc, toxic copper activity and the mechanism of its effect are not known enough and they are not yet explained. Because of that, the aim of this work was ( with acute dog intoxication with copper sulfate ) to contribute to better clearing of biochemical mechanism as a result of copper toxical effect and to make analysis of its tissue distribution. Researching was done on adult dogs, both sexes, different races and body mass of 14- 20 kg, who were given a 10% water solution of copper sulfate in the dosage of 33mg/b.m. divided into 5 equal doses. The analysis of biochemical blood structure took the following things: total proteins, albumins, globulins, total lipids, chole2+ sterol, glucoze, transaminase (AST,ALT), catalase, peroxidase, vitamin C, proteine SH, the contretation of Cu in the serum 2+ and the content of Cu in the tissues. The results are presented in the charts and graphic presentation. All these changes can be the important directions in an biological monitoring as a biochemical indication of copper pollution in the surroundings.