Purpose: Our aim was to detect changes in infrared radiation, contaminated structures of the musculoskeletal system at the main part of the shoulder girdle and upper body with the help of elite swimmers of Kometa Brno. Methods: Main group of seven swimmers (5 men and 2 women), members of Kometa Brno, Czech National Swimming and Open Water Swimming team, age range 18-35 years, were observed during 11 weeks of training in water and 3 units of dry land. Their training consisted of about 50-70 km per week, with overall mileage of 2000 km per year, swimming and training at the top level for 8 – 21 years, specializing in freestyle. The control group was 40 students of University of Defense, measurements were taken only once a day and 14 Czech national team members only swam in the pool. Disciplines varied from 50 m to 1500 m, all strokes - Butterfly, Backstroke, Breaststroke and Freestyle. For measurement was used camera FlukeTiR. Camera was hand-held, portable, manual focus, sensitivity of 0.1 st. C, LCD display with a resolution of 480x640 pixels. At the display there was the temperature distribution of body surface. Increased temperature indicated cut damage to the body before it enters pain (overloads). Reduced temperature indicated chronic inflammation and scarring (healing after injury, helps in deciding on treatment, rehabilitation and again, load). Focus was on ligaments, tendons, muscles, joint capsules, bones, lymph nodes, blood vessels and other internal organs. Measurement was done three times. First time it had been done before training in the pool, second after practice unit (about 2 hours) and third measurement was taken 15 minutes after the second one. Results: Measurements were made from January to June. Not every swimmer attended each measurement session, but we do have 10-15 measurements for each swimmer. One measurement consists of 12 pictures. We have a total of circa 1094 pictures for our process. Conclusion: Second measurement is not applicable because the evaporation of water from the body distorts the results. The discovery of congestion and other changes to the organism are still to be identified.