[Physical work capacity and oxygen requirements of rats during physical exertion following prolonged hypokinesia]

The white rats exposed to 60 and 100 day hypokinesia showed a substantial and progressive decline in the tolerance to a maximum physical load. This was accompanied by disorders in the regulation of the oxygen balance: during load oxygen requirements were mainly met by the oxygen debt. The above changes that followed a 100 day hypokinesia returned to the normal two months later.