Аннотация:Distance-velocity diagrams of galaxy groups show some features, which allow suggesting that, their dynamical evolution is substantially determined by specific of dark matter distribution and dark energy. Here we presented some results of numerical simulations of dynamical evolution of such galaxy groups with taking into account the dark energy effects in the form of antigravity of Einstein - Gliner's vacuum (Chernin, 2001). Numerical simulation is based on NBODY2 Aarseth's code (Aarseth,2003), which have been upgraded in order to include antigravity effects. The special attention was given here to the Local Group and Local Volume.