BIA method, body composition, reliability coefficient, standard test error

The aim of this study is to estimate the specific reliability of body composition measurement by the BIA Method (using TANITA 418 MA device), by means of its parallel form generated by multiple repetition of the given measurement. The experimental sample group comprised of 91 students of Physical Education (53 men and 38 women) whose average age was 20.5 and 20.1 years, respectively. A tetrapolar bioimpedance weighing machine TANITA 418 MA was used for measurement of body fat ratio by the BIA method. For estimation of the specific reliability we used a calculation of correlation coefficient between two parallel forms of measurement. All the statistic tests were realized on a significance level ? = 0.05. The values of Pearson correlation coefficient ( ) exceeded 0.970 in all tested parameters. The value of body weight was calculated as 1.000. The values of standard test error (SE) for monitored parameters oscillated between 0.06 - 0.12.