Introduction: Balance is an ability that can be reduced with age due to anatomical and physiological changes resulting from reduced inflow into the sensory system, central nervous system and neuro-muscular system. Cognition is connected with the postural control and its part is also a divided attention. This is the ability to switch between different tasks, which can be studied by performing dual task condition. The result of the latter is a decline in one or both tasks; this is dual-task cost. In order to find out what part of the attention is meant for controlling the posture, the additional cognitive task to the Timed up and go (TUG) test was added. This is a simple, fast-performing, functional mobility test suitable for elderly people. Various cognitive dual tasks that are used during TUG test are processed in different areas of central nervous system. Purpose: The purpose of our work was to find out if there are any differences between the three different cognitive tasks and which of them has the most influence on TUG test. Methods: We tested 21 active elderly people. Each of them participated in 4 different tests: a classic TUG test, TUG test with cognitive task with subtraction of number 3 and 7 and listing the animals. We measured the time needed to complete the TUG test and the number of operations performed at each dual task. Results: The average age of participations was 69,6 ± 7,7 years. The times needed to perform TUG test with dual task were significantly (F = 231,1; p < 0,05) longer than times needed for TUG test without dual task. The average number of operations performed has statistically significant difference (F = 120,98; p < 0,05). Among the additional tasks, the subjects performed the smallest number of operations and needed the most time in the TUG test by subtraction of the number 7 (2,5 ± 1,8; 9, 9s ± 3,6 s), the highest number of operations and the minimum time was needed to perform TUG test with listing animals (4,8 ± 1,6; 9,3 s ± 2,8 s). Dual task cost was the largest at the additional task with subtracting the number 7 (34 % ± 28,6 %) and the lowest at listing animals (26 % ± 24,5 %). A comparison of the results of the VIP test with various cognitive tasks showed a good and statistically significant correlation between the times of the tests with an additional task (r = 0,86 – 0,95; p < 0,05). Discussion and conclusion: Given the small differences in the dual task cost and excellent correlation between the tests, we can conclude, that any additional cognitive task can be used in the implementation of TUG test with dual task.