Purpose. The purpose of this work was to assess the relationship between muscle torques in the knee joint area and components of tissue composition by means of the bioelectrical impedance method. Basic procedures. 31 male subjects, aged 22-23, participated in the study. Basic morphological parameters, namely: body height (BH), body mass (BM) and somatotype were measured by the usage of Sheldon method modified by Heath and Carter. The body composition was examined using an BIA 101S apparatus by Akern. Torques of the knee joint extensors and flexors of both limbs were measured for joint angles 75° and 30°, respectively. In the statistical report cluster analysis was applied (k-means). Step regression was applied in order to evaluate the relationship between muscle torques and tissue components. Main findings. A significant correlation (r = 0.42 for p ≤ 0.01) between the torques of the knee joint extensors and the entire content of lean body, its metabolically active components (BCM) and muscle mass was observed. Also, a high value of correlation coefficient between extensors and fat mass was noticed. Significant correlations between flexor torque and muscle mass, cell mass and lean body were observed. Conclusions. The results obtained enable us to conclude that the values of muscle torques are significantly connected with the level of development of the tissue components, thus its estimation may be based on the measurement of body components.