On average humans spend a third of our life asleep. Nowadays we sleep less than we used to. Lack of sleep can have negative effects on human body and its functions. The purpose of this research was to discover, how specific factors like illness, gender and type of sport effect quantity and quality of sleep of students of Faculty of Sport. The questionnaire was published on software called 1ka.si, we also shared it on Facebook. The questionnaire consisted of questions regarding health issues, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale and DASS-21. There were 234 students participating in the research, but due to unsolved or partially solved questionnaires, the sample included 127 students (54 %), 58 (46 %) of which were male students and 69 (54 %) were female students. Their average age was 21 +/- 2,557 years. We used SPSS to analyse answers and discovered, that 36 % of students had health issues. The most common were upper respiratory issues (20 %) and issues with digestive organs (9 %). There were statistically significant differences between students with no health issues and students with health issues in several cases – sleep disturbances (p = 0,025), daytime dysfunction (p =0,002), daytime sleepiness (p =0,03), depression (p = 0,009), anxiety (p = 0,002) and stress (p = 0,014). We found that stress component was the one that caused the most trouble to students. Despite the sleep disturbances, use of sleeping pills was minimal. There were no statistically significant differences between students who participate in individual sports and students who participate in team sports. When we compared quantity and quality of sleep between genders we found, that statistically significant differences occurred only in anxiety (p = 0,001) and stress (p = 0,027). For better understanding, new and more extensive research would be needed.
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