The article highlights the interaction of areas of quality of life and different levels of physical activity in a week in adolescents. The survey covered pupils from secondary schools from Slovakia (n= 149) who were divided into four groups according to the level of the sport performance. Quality of life was monitored through a modified questionnaire SQUALA and frequency of physical activity in a week in hours. Data are presented in descriptive characteristics (n, M, SD). Statistical significance of differences, respectively relations are considering by nonparametric methods at the level of significance (W, U: p< 0.05, respectively. rs p< 0.20* p< 0.10**).

Results did not show differences between groups of adolescents with various sporting level of sport performance in the level of quality of life, respectively its individual areas. We find the differences only in the subjective perception of importance and satisfaction with the areas of physical well-being and spirituality (p< 0.05). The overall number of interactions between quality of life and frequency of physical activity in a week very is very low. Positive interaction between physical activity and physical well-being (rs:. 239*) are found only in adolescents who are registered athletes with a frequency of physical activity in a week, M: 10.774 hrs, SD: 4.425. Negative interaction are predominantly observed in the group of passive athletes in satisfaction with the areas of physical (rs:-, 396*), psychosocial (rs:-. 310*) and spiritual well-being (rs:-, 400**). A negative correlation between physical activity in a week is found in education (rs:-. 327**) and leisure time (rs:-. 268*) for registered athletes.