[Russian system of countermeasures: the present and future].

The paper considers the fundamental principles of the Russian countermeasures system validated successfully in multiple long-term missions to the Russian space stations. The system adopted on the ISS Russian segment is detailed. In particular, it is pinpointed that physical training of cosmonauts was adjusted to the demands of the stages of ISS assembly and utilization. The locomotion training performed with departures from the flight documentation (ODFs) is described. The concluding section of the paper lays out the picture of vistas for the system of countermeasures in future exploration missions.