Often used tests in the diagnosis of athletes are vertical jump tests, the force-velocity test is one of them. It consists of several jumps, some of which are loaded, and tries to determine whether the athlete relies more on his strength production abilities or on his velocity production abilities during the jump. The test is most often conducted with a load in the form of an Olympic bar held on the shoulders. There is more and more evidence that trap (hexagonal) bars have an advantage in weighted jumps, due to such advantages, the goal of the study was to compare the results of the test conducted with the Olympic and trap bar, and to check the reliability of testing with the trap bar using the test-retest method. 14 students of the Faculty of Kinesiology, University of Zagreb, age 22.93 ± 1.07, body height 184.77 ± 7.89 and body weight 82.57 ± 8.73 participated in the research. Three tests of the same protocol were performed, once with the Olympic bar and twice with the trap bar. The test results in the variables of maximum theoretical force, maximum theoretical speed, maximum power, force-speed ratio index and percentage of deviation from the optimal profile were compared by T-test for the Olympic bar and the first test with the trap bar, and by correlation between the first and second tests with the trap bar. The results of the statistical processing indicate that the Olympic and trap bar tests are significantly different and that the subjects achieved higher jumps with the trap bar. The correlation coefficient in the test-retest method did not establish a significant connection in all the variables of the trap bar test. Although the results achieved are higher with the trap bar, we cannot give it an advantage in testing because all the measurements of the test are intended for its implementation with the Olympic bar and no high reliability has been established in the test with the trap bar.