Accelerometer TriTrac–R3D is used in monitoring of the kinetic activity (mostly locomotion) in space. The objective of this study was to determine if TriTrac can monitor kinetic activity without locomotion and if it monitors deflections on a stable and on an unstable platform. The study group contained forty-seven individuals; each of them had Tritrac – R3D attached to the right (SIAS) spina illiaca anterior superior.Tested individuals completed gait on stable and unstable platform.The study group compared males and females, sports people, and individuals not involved in sports.The results show that the device can record body deflections during gait and differences between platforms. On the unstable platform, the deflections of SIAS were greater than on the stable platform. No significant difference of the center of gravity deflection was noted between males and females. Individuals not involved in sports presented with smaller deflections on the stable platformthan did sportsindividuals. No difference was noted on the stable platform between these individuals.

        Key words: accelerometer, postural stability, Posturomed