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Introduction: Soccer players are injury prone, and increasing competition - especially at the highest level - leads to increasing training loads, and these may contribute to more injuries to players. Hence, the aim is to increase preventive measures and treatment in this field. Aim: The paper examines soccer players’ susceptibility to injuries occurring at different levels of the sport’s development, and describes the accompanying conditions. Materials and Methods: The study involved 215 players of different levels, of which 105 came from the II and III league clubs (group I) and 110 from IV league clubs (group II ). The conducted research was based on a diagnostic survey using an anonymous questionnaire containing 15 questions developed by the authors. Results: Similar traumas (injuries) were observed among respondents of both groups. Group I had suffered injuries in the case of 92 (87.62%) respondents, while Group II contained 87 (79.09%) subjects who had suffered injuries. Group I trained harder than Group II , but the nature of the injuries was similar for all the players. The surveyed Group I had 100% access to physio-therapeutic help; in Group II this was the case for only 48 (43.64%) subjects. Group I also applied preventive anti-injury measures to a greater extent than Group II , in the form of pre-training warm-ups and post-training stretching and loosening. Conclusions: Among the more advanced soccer players there was a trend toward more traumas with similar kinds of sustained injuries, despite the greater availability of physiotherapy care and their use of more antiinjury prevention techniques than in the group representing the lower levels of sport advancement in soccer. This adverse effect is associated with the more intense training and training loads of the more advanced players

Background: Changes in blood pressure during subjects’ exercise are individually different. The reasons of these differences are unknown. Aim of the study: The aim of this paper is to investigate the rate of changes in cardiovascular system at rest and at physical load which enhance systolic blood pressure (SBP) = 200 mmHg in people with different physical performance. Material and methods: The studies included 18 soccer players and 14 students who do not practice any sport, whose age, body mass, body height and BMI have been similar, and who at baseline were measured systolic blood pressure (SBPr), diastolic blood pressure (DBPr) and heart rate (HRr). Then, the subjects performed exercise on a cycloergometer with increasing intensity in which at the level of the systolic blood pressure = 200 mm Hg (SBP200) were measured DBP200 and HR200. In terms of resting and exercise time the size of the mean arterial pressure (MAPr, MAP200), pulse pressure (PPr, PP200) and rate-pressure product (DPr, DP200) were calculated. Moreover the power achieved in PWC170 test (W and W/kg) and maximal oxygen uptake (VO2max) (ml/min and ml/min/kg) were also calculated. Results: Soccer players have reached a higher power in PWC170 and higher VO2max and lower HR200 and DP200 (p