RIO DE JANEIRO — Late in 1983, months before they announced a boycott of the Los Angeles Olympics, sports officials of the Soviet Union sent detailed instructions to the head of the nation’s track and field team.
Oral steroid tablets were not enough, they said, to ensure dominance at the Games. The team should also inject its top athletes with three other kinds of anabolic steroids.
Providing precise measurements and timetables for the doping regimens, the officials said they had a sufficient supply of the banned substances on hand at the Research Institute of Physical Culture and Sports in Moscow, a division of the government’s sports committee.
The potent drugs were critical to keeping up with the competition, they wrote in the instructions.
The document — obtained by The New York Times from a former chief medical doctor for Soviet track and field — was signed by Dr. Sergei Portugalov, a Soviet sports doctor who went on to capitalize on a growing interest in new methods of doping.
Now, more than 30 years later, Dr. Portugalov is a central figure in Russia’s current doping scandal. Last fall, the World Anti-Doping Agency named him as a key broker of performance-enhancing drugs in Russia, someone who in recent years injected athletes personally and made a business of covering up drug violations in exchange for money.