Dick Pound has told Russia that fixing their doping problems should be “child’s play” for a country that spent billions building the venues for the winter Olympics in Sochi from scratch in seven years – but warned its politicians they need to go at “full speed” if they want their athletes to compete at next summer’s Olympics in Rio de Janeiro.

Russia’s track and field stars were last Friday banned by the International Association of Athletics Federations from competing and the country’s anti-doping operations are likely to also be suspended later on Wednesday at a World Anti-Doping Agency meeting in Colorado. However the possibility of further punishment against Russia has also been raised by a senior figure in winter sport, who suggested the results at the Sochi Olympics – where Russia topped the medal table – could be “completely worthless” because of doping.

In an interview with the Associated Press, the CEO of US Biathlon, Max Cobb, said that last week’s independent commission report, which uncovered evidence of widespread use of performance-enhancing drugs in Russian athletics and allegations of corruption and collusion by Russian and IAAF officials, had also raised issues with testing in Sochi. “The way I read the report, the testing that took place in Sochi is, at least suspect, and perhaps completely worthless,” said Cobb. “That raises huge questions.”

AP also reported that another Winter Olympian had sent a letter to a Wada representative asking for the issues in Russia raised by Pound’s report to be extended to all sports. “A full investigation should be carried out into the failed testing of Russian athletes from ALL sports,” said the letter, provided on condition the athlete’s name and country be withheld because of the sensitivity of the subject.

Meanwhile Pound, speaking after briefing Wada’s executive committee on the findings and recommendations in his report into Russia, urged the country to take action if it wanted its track and field athletes to compete in Rio.

“Russia built Sochi in seven years so this is child’s play,” said Pound. “All you need is some direction from the political authorities and say: ‘Look, Rusada [the Russian Anti-Doping Agency] is independent and the lab is independent and anybody who doesn’t make that happen is in trouble.’

“The same with coaches, you say: ‘Folks, the old Soviet system is over, we’re not going to do that anymore and if that is your method of coaching don’t let the door hit you in the butt on the way out.’”

Speaking before a meeting of Wada’s foundation board on Wednesday, which is expected to officially decertify Rusada and the Moscow lab that processed blood and urine samples from Russian athletes on behalf of the athletics federation, Pound agreed that Russia’s culture would not change overnight but said the country faced a stark choice.

“You can either fight the findings or say: ‘OK, we’ve got to change,’” he said. “If they want to be there for Rio they’ve got to really act. They’ve got to bite the bullet and go full speed ahead to really get all this done in time for Rio. If they start fighting over everything then fine, take your time, all the time you want but you are not going to work on your tan next summer.”

The German documentary maker Hajo Seppelt, whose undercover work in Russia exposed much of the cheating and corruption that led to Pound’s report, said he was unconcerned by reports than some Russians athletes were planning to sue him and his whistleblowers. Seppelt told the Guardian: “We haven’t heard anything about that. It would not be the first time that people from Russia try to do that. So far no one had success, even not in a Russian court. The truth is obvious and overwhelming – Wada’s independent commission confirmed this.”

Meanwhile Kenya’s athletics federation has accused one of the whistleblowers named in a Sunday Times exposé as falsifying claims. The paper quoted Paul Simbolei as a coach who feared for his life after telling police about how some athletes paid bribes to avoid positive tests becoming public. But in a statement Athletics Kenya said they had no record of Simbolei being an employee of the federation and therefore he was “not authorised to handle any athletes or to coach”.

“In the records of AK and those of the AK North Rift Region Kipsero Training Club in Iten does not exist,” it said. “The information therefore given is incorrect. AK is not aware of any investigations by the police or allegations of extortion by its members.

“We also would like to notify the general public and athletes that M. Simbolei has been reported to Athletics Kenya and is subject to investigations regarding his involvement in forgery of Athletics Kenya documents and signatures of senior AK officials and presenting the same to clear athletes in several embassies,” it added. “The matter is being followed up with the relevant authorities.”

Simbolei was unable to be reached for comment.