SUMMARY
Background: The benefits of regular moderate-to-vigorous leisure-time physical activity (LTPA) are well documented, and include reduced morbidity and mortality from cardiovascular disease, diabetes, cancer, depression, and other pervasive conditions. Despite these benefits, adults` participation in regular LTPA is still low. Many previous studies showed associations between adults` participation in LTPA and demographic factors but the results of these researches are inconsistent. The purpose of this study was to perform a systematic review of studies examining the relation between adults` participation in LTPA and two demographic variables: gender and age.Method: The systematic review was limited to four factors: leisure-time physical activity, adults, gender and age. Literature searches were conducted using predefined keywords in 6 key database. A total of 46 potential papers was identified. Of these 46 papers, 25 passed the eligibility criteria and were included in the systematic review.Results: In most of the analyzed studies showed no significant differences in the percentage of inactive men and women. Among sufficient active individuals there were more men than women. In all analyzed studies found significant association between the level of LTPA and age of men and women. However, the directions of these connections were different in individual countries, and age and gender groups.Conclusion: Relationships between adults` participation in LTPA and gender, and age are specific for men and women in individual countries, and age groups, therefore there is necessity to monitor the level of LTPA in these subgroups. The results of these studies should be useful in the creation of the strategies supported adults` participation in LTPA.