engleski

BIOELECTRICAL IMPEDANCE PHASE ANGLE CHANGE IN SOCCER PLAYERS DURING SPRING PREPARATORY PERIOD

AIM: Phase angle is derived measure obtained from direct measures of BIA method: resistance and reactance. Its biological meaning is not completely understood, but it has been interpreted as an indicator of membrane integrity and water distribution between intra and extracellular spaces, as well as predictor of body cell mass. Some researchers connected it with sport performance. The aim of this paper is to show values of the phase angle and how they change in a sample of football players during the spring preparatory period. MATERIALS AND METHODS: A total of 22 male football players from two football clubs from the Vukovar area who played in the 3rd Croatian Football League East participated in the study. For the purpose of the study, body composition was estimated using the bioelectrical impedance method (BIA) at the beggining of the preparatory period, and after 8 weeks of regular trainings. RESULTS: Although body mass and body composition, measured by BMI, % of body fat and fat-free mass did not change significantly, we found statistically significant change in BIA phase angle, which was higher at the end of the study compared to the beggining (p=0.039). CONCLUSION: Phase angle is very sensitive measure of changes in body of soccer players generated by trainings during the preparatory period.

bioelectric impedance, soccer, phase angle

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