Background: The popularity of using the advice of a personal trainer is increasing in Poland and currently most gyms offer the possibility of training under the supervision of a professional. Personal trainers present a multifaceted nature into physical activity and become their clients’ guides in achieving sporting goals. Physical trainers also work in sports clubs and supervise the training of people professionally involved in sport. Aim: Given the professional role that they play, this article aimed to analyze the knowledge and attitudes of personal trainers towards using prohibited measures to improve performance in sport, as well as counteraction measures. Methods: The study used a questionnaire created by the authors containing closed, semi-open, and open questions. Results: The results of the presented research indicate that most physical trainers and students educated in this field have a negative attitude towards the use of prohibited measures that increase performance but they noticed that doping was common in sport by 88.51% respondents. In the group of personal trainers, the majority (87.14%) admitted that good results in sport could be achieved without the use of doping. They stated that it was unfair (25%), contrary to the fair play principle—16%, while over 11% indicated this as cheating. Only 6% of people pointed out that it was legally prohibited and 3% that it was harmful. These results show that 10.13% of all respondents believe that the use of doping is a necessity to achieve very good results in sport. Conclusions: The availability of doping substances is statistically correlated with the question of persuading to use doping in both groups of trainers and students and some people justify the use of doping. The research proved that the personal trainers’ level of knowledge on doping is still insufficient.

Background: In high temperatures, adequate hydration is vital for sustained physical exercise. This study explores the effect of three hydration strategies on physiological indices and work intensity. Methods: The research involved 12 healthy males who engaged in three test series, each separated by a one-week interval. During the trials, participants underwent a 120 min cycling session in a thermal climate chamber (temperature: 31 ± 2 °C, humidity: 60 ± 3%, air movement: <1 m/s). Measurements of rectal temperature (Tre) and heart rate (HR), and assessment of subjective workload perception, and thermal comfort were made both before and during the exercise. The computation of the physical strain index (PSI) relied on Tre and HR values. Three hydration strategies (isotonic drink, water, and no hydration) were administered before, during, and after the exercise. Results: Regardless of the hydration strategy, the participants’ mean body mass decreased as a result of the exercise. Statistically significant differences in HR were observed between the no-hydration and water groups (p < 0.036). The mean PSI values significantly varied between hydration strategies, with the no hydration group exhibiting a higher PSI compared to the isotonic drink or water groups (p < 0.001). Conclusions: All hydration strategies contribute to thermoregulatory processes and mitigate the rise in internal body temperature during sustained physical exercise in elevated ambient temperatures.

This chapter is focused on comparative analysis between Jewish sports in the USA and Jewish gymnastic fellowships in Eastern Europe, particularly in Bulgaria, as well as their political, cultural and ethical impact in those regions and countries in the beginning of the 20th century. Special attention is paid to the idea of Muscular Judaism in Max Nordau’s philosophy. According to this idea, more physically assured Jews who win sport competitions can transform the long-held stereotype of the weak, intellectual and business-oriented Jew. Further attention is paid to the realization of this philosophy as ideology and practice in the US and Eastern Europe. An example is the Maccabi youth movement which gathers together Jewish youths with athletes of different background – Christian, Muslim etc. As youths are more open-minded and still free from prejudice, youth sports in Europe and USA are very important in this perspective: sport can establish multicultural dialogue. My research is focused on Bulgarian practices and how those practices made and still make Bulgarian society nowadays more aware of cultural diversity in the country and generally on the Balkans. In Eastern and in Central Europe Maccabi has been working with other Catholic, Orthodox and Muslim youth organizations, as proved by documentary photos, contracts and mutual events. The situation in Bulgaria is discussed against European and American background.