The FIE, whose President is Uzbek-born Russian business tycoon Alisher Usmanov and a close ally of International Olympic Committee President Thomas Bach, have also confirmed the country's four reserve fencers are eligible to compete.

Russia's six triathletes heading to Rio 2016 have also received the green light to take part in the Games by the International Triathlon Union (ITU), while the International Volleyball Federation (FIVB) have confirmed the country's volleyball players will compete.

It follows the International Olympic Committee (IOC) Executive Board decision to let International Federations decide which Russian athletes are able to compete at Rio 2016, rather than impose a blanket ban on all Russians.

It followed the allegations of state-sponsored doping revealed in the explosive McLaren Report.

Each International Federation were asked to "carry out an individual analysis of each athlete’s anti-doping record, taking into account only reliable adequate international tests, and the specificities of the athlete’s sport and its rules".

“The FIE has re-examined the results from 197 tests taken by Russian athletes in 35 countries, including Russia, between 2014 and 2016,” an FIE statement read.

“They were all negative.

“In accordance with the request of the IOC Executive Board, the FIE has established a pool of Russian fencers eligible for the Rio Olympics. 

"It consists of all 16 fencers who have qualified for the Games, plus the four P-accreditation (reserve) athletes.

“Furthermore, under the authority of the FIE and overseen by PWC, 24 Russian fencers, including the 16 who had qualified for Rio, were tested during the 2016 European Championships in Torun, Poland, June 20-25.

“All 24 samples returned negative results from an independent externally-appointed laboratory in Dresden, Germany.”

The FIE also pledged to continue to “protect the integrity of fencing” by continuing to work with the IOC and the World Anti-Doping Agency (WADA).

Usmanov, a billionaire and one of Russia’s richest men, previously claimed that Russian fencers set to compete at Rio 2016 should be drugs-tested ahead of the Olympics in World Anti-Doping Agency (WADA)-accredited laboratories to remove any speculation about possible cheating.

"This will help avoiding possible speculations that athletes had a possibility of resorting to banned substances while the activities of the anti-doping laboratory on the territory of Russia were suspended and they were preparing for the Olympic Games at that time," the FIE President stated in December.

Russia won three Olympic fencing medals at London 2012, two silvers and a bronze.

They held last year's World Championships in Moscow and topped the medal table.

Russia triathlon teams have also been cleared to compete, with Alexander Bryukhankov, Dmitry Polyanski and Igor Polyanski due to take part in the men’s event, while Anastasia Abrosimova, Alexandra Razarenova and Mariya Shorets will be their women’s squad.

The ITU stated that they had “carefully examined the information delivered by WADA and the McLaren report” and had reviewed the criteria set by the IOC before confirming the athletes’ eligibility.

“None of the six Russian triathletes that have qualified for 2016 Olympics are included in the McLaren report, nor have any of them served suspensions or bans for failed doping tests," an ITU statement read.

“Additionally, they have all been tested outside of Russia.

“Therefore, ITU will recommend to the IOC that these six athletes be permitted to compete in Rio next month.

“We will continue to closely follow the updates from the McLaren report, as well as recommendations from WADA and the IOC on best practices in the fight against doping.”

The FIVB have also confirmed that both their men's and women's volleyball teams have been allowed to compete, along with their two men's and one women's beach volleyball pairings.

"The FIVB has submitted the names of the Russian volleyball and beach volleyball athletes to the IOC and CAS for approval," the FIVB said in a statement.

"The FIVB has conducted a full examination of the Olympic eligibility of each player submitted by the Russian Volleyball Federation in accordance with the IOC Executive Board’s decision on Sunday, July 24.

"It is important to re-emphasize that the FIVB has zero-tolerance towards doping and has total confidence in its anti-doping system. 

"The FIVB is 100% committed to protecting clean athletes and will take immediate action to suspend any athletes who have infringed anti-doping rules."

A total of 105 Russian athletes have so far been banned from the Olympics in the Brazilian city, with the vast majority coming as a result of the International Association of Athletics Federations (IAAF) blanket ban, which was upheld at the Court of Arbitration for Sport last week.

Several International Federations, including those representing swimming, canoeing, rowing, sailing and modern pentathlon, have already confirmed the exclusion of a number of Russian athletes.

Others, such as the International Judo Federation, the International Tennis Federation, the International Shooting Sport Federation and World Archery, have declared all Russians eligible.

Russian officials have expressed confidence that their entire boxing, handball and rhythmic gymnastics teams will be allowed to compete but no official decision has yet been announced.