The aim: to examine the alternation of physical preparedness of the cadets aged 23-25 of the Great Lithuanian etmon Jonusas Radvila training company, while purposely training the least trained physical feature. The object of the study: the physical preparedness of the cadets. Hypothesis: The results of the physical preparedness of the cadets will improve after 8 weeks of emphasized training of the least trained physical feature. Methods used in the work: theoretical analysis and generalization, anthropometry, physical fitness test, pedagogical experiment, mathematical statistics. Subjects: 54 healthy cadets, aged 23-25, of the Great Lithuanian etmon Jonusas Radvila training company. Anthropometrical measurements (height and weight) were performed using standard methods. The body mass index was calculated according to formula (kg/m2). The physical preparedness of the cadets was examined with the tests corresponding to the NATO standards: press-ups (t/2 min), sit-ups (t/2 min), and 3000 m running. Physical preparedness was assessed according to the table of points in the system of 5 points. After analyzing the results of physical preparedness it was observed that for those cadets who failed or performed weakly, the hardest exercise was sit-ups in 2 minutes. The experimental group of the cadets was made of volunteers, who failed or performed this normative of physical preparedness weakly. The program for training the dynamic endurance strength of abdominal muscles was applied... [to full text]