Gymnasts from four countries are set to compete in Tokyo ©Japan Gymnastics Association

Gymnasts are preparing to compete in the four-nation Friendship and Solidarity competition in Tokyo, with tomorrow’s event potentially a key milestone as the Japanese capital prepares to host the rescheduled Olympic and Paralympic Games next year.

International Gymnastics Federation (FIG) President Morinari Watanabe admitted earlier this week that the eyes of the world will be on the sport during the event.

Each gymnast from the visiting teams has been required to quarantine for two weeks before leaving for Japan, while movement in Tokyo will be restricted to the venue and official hotel.

Teams arrived in Japan on charter planes and athletes were kept away from other passengers after landing at the airport.

Each team has its own reserved floor at the hotel, which is monitored by security guards.

Fans will be allowed to attend the event, but capacity will be restricted to 2,000.

A total of 30 gymnasts are set to compete at the event, which features athletes from China, Russia and the United States, as well as hosts Japan.

No all-around or individual prizes will be awarded, with the top three scores on each piece of apparatus per team counting towards the final team score.

Japanese star Kōhei Uchimura headlines the event, with the two-time Olympic all-around champion making his return to competition following a series of injuries.

He tested positive for coronavirus last week, but that was later confirmed to be a false positive.

Russia’s reigning all-around world champion Nikita Nagornyy and 2019 World Championship bronze medallist Angelina Melnikova are among the athletes to have made the trip.

American World Championship medallist Yul Moldauer and China’s Youth Olympic Games medallists Ma Yue and Yin Dehang are also among the athletes due to compete.

Nagornyy told Russian state news agency TASS that he was impressed by the measures taken by organisers to enable the competition to take place.

"We will be able to take part in the competition without any worries," Nagornyy said.

"I hope that we will all be able to overcome the current situation, and it will change for the better."

Apparatus in training halls and on the field of play will be cleaned and disinfected at the end of each session at the international team gymnastics event as part of COVID-19 protocols.

Successful hosting of the event would provide a boost ahead of Tokyo 2020.

Organisers have suggested the measures used for the gymnastics event could be replicated at next year’s Games.

Draft coronavirus countermeasures, produced by a three-party council, have suggested a "general principle" could be adopted to limit the range of athletes’ movement to facilities managed by Tokyo 2020, such as competition venues and training facilities.

The draft added that measures such as encouraging athletes and officials to travel only via designated vehicles could be considered, although limited use of public transport may be acceptable if unavoidable.