Studies on physical activity in transition countries should include the domains of work and domestic and garden, since if only leisure-time domain is examined, the total physical activity level could be underestimated. As the lowest physical activity was reported by adolescents and young adults, strategies for increasing physical activity in this age group should be developed.

The aim of this paper was to determine the level of physical activity of high school teachers and establish whether there were differences in physical activity of female and male teachers during their professional work, travel to and from work, and leisure time taking into consideration their age, gender, and work experience. The study included teachers at a high school in Osijek-Baranja County, Republic of Croatia. The sample included 41 high school teachers aged from 25 to 64. This study used the Croatian version of the Global Physical Activity Questionnaire (GPAQ) as the measuring instrument. The variables of the study were the total physical activity of teachers, physical activity at the workplace, physical activity during travel to and from work, and physical activity during leisure time, sporting and recreational activities. The Man-Whitney U test with the significance level of p< 0.05 was used to determine the differences between the named arithmetic means. More than half of the total group (76 %) and both males and females were meeting physical activity recommendations of 600 MET (min/week). The results also show that 24 % of teachers engaged in low-intensity physical activities.

The main objective of this study was to determine the prevalence and frequency of use (not) allowed supplementation among recreational users and other forms of fitness and recreational content. Domestic and foreign literature clearly indicates the existence of (not) allowed supplementation in sports recreation. It should be noted that the problem of using illegal supplementation in sport, in most of the literature generally, considered in the context of doping in professional sports. Sports recreation area is on this issue largely ignored due to the lack of doping controls in the same extremely nontransparent terms. Therefore, the work is on the one hand aimed at the general empirical clarification of the use of (not) allowed agents among recreationists, while the other side wants to empirically examine their motives for use. These findings ultimately serve the development of preventive and educational guidelines aimed at reducing the use of illegal supplementation. As permitted use of supplementation ( nutritional supplements ) according to the latest research (e.g. Kläber 2010a , 2010b ) is often only the first stage on the way to the use of illegal supplementation ( doping ), it is necessary to analyze the use of illegal supplementation in sports and recreation including an analysis of the use of permitted supplementation. Therefore, this paper addresses the issue of how to use permissible and impermissible supplementation.