Introduction. Anthropometric characteristics and physical activity (PA) levels are often considered as potential variables that can be significantly correlated with specific motor abilities. Aim of Study. The aim of this study was to evaluate the relationships between anthropometric characteristics and motor abilities with the use of a methodological approach that is rarely applied in physical culture sciences. The correlations between body mass, body height, BMI and PA levels vs sequential power decrease in successive minutes of the 3-Minute Burpee Test (3-MBT) were analyzed. Material and Methods. The study involved 359 full-time university students aged 19-22, including 163 male (20.4 ± 0.67 years) and 196 female (20.4 ± 0.65 years) participants. Anthropometric characteristics (body mass, height and BMI), PA level (MET units) were measured according to standardized guidelines before the test. The participants’ strength endrance were evaluated with the use of the 3-MBT. The results were processed statistically by calculating third-order partial correlation coefficients. Results. Raw score correlation coefficients were statistically significant (p-values: 0.05-0.01), excluding body height which was not bound by significant correlations with the number of cycles completed by women in each minute of the 3-MBT and the number of cycles completed by men in the first minute of the 3-MBT. However, the third-order partial correlation analysis demonstrated that PA level was the only independent variable that was significantly correlated with the results scored in the entire 3-MBT and in successive minutes of the test. In both sexes, the lowest values were observed in the first minute, and they were considerably higher in the second minute of the test. Conclusions. In the group of the analyzed variables, only PA levels significantly influence the strength endurance of moderately physically active young women and men during the 3-MBT.
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