Nic Coward, the new president of UK Athletics, suggested that the Tokyo 2020 Olympic Games be postponed because of the coronavirus crisis.
This occurs amid the cancellation of the main qualifying events and the athletes 'growing criticism of the organizers' position to move forward with plans to organize the event, which should take place from July 24 to August 9.
Coward told BBC Sport: "Leaving it where it is is creating a lot of pressure on the system. Now, it needs to be resolved."
GB Taekwondo performance director Gary Hall, who is in Japan, said the organizers are "nervous" and ranks the Games' prospects starting in July between "50 and 50".
Elsewhere, Olympic committees in Norway and Slovenia urged the IOC to postpone the Games until the pandemic is under control.
On Friday, the president of the International Olympic Committee (IOC), Thomas Bach told the New York Times "different scenarios" for Tokyo 2020 are being considered for the first time.
Also on Friday, Swimming EUA asked the U.S. Olympic and Paralympic Committee (USOPC) to request a 12-month delay at this summer's Games.
In a letter seen by the BBC, its chief executive, Tim Hinchey III, says that "moving through the global health crisis this summer is not the answer".
Hinchey invited USOPC executive director Sarah Hirshland to speak with the IOC and "use your voice and speak for athletes".
This week, heptathlon world champion Katarina Johnson-Thompson left her base in France, saying it was "impossible" to train and "keep the same routine" in light of the restrictions imposed after the coronavirus outbreak.
Many athletes preparing for the Olympic and Paralympic Games had their training sites closed in the UK last week, in response to new government guidelines on social detachment.
"Facility operators are making understandable decisions to close facilities that our athletes rely on to prepare for the biggest test of their careers and sporting lives," said Coward.
"The intensity of the pressure on people at the moment is too great and decisions need to be made soon."
Hall told BBC Sport that he was impressed with the preparations that Tokyo 2020 organizers made and remains hopeful that they can start in July.
"They are obviously very nervous about the circumstances that are happening at the moment, but their preparations were brilliant and the locals and the athlete village are excellent," he said.
"I expected everything to be a little more frantic, but they are in a calm space and, if the Games continue, they will be ready."
"Things are changing so quickly around the world and we hope it works, but it cannot work at all costs and the health and safety of athletes must come first."
Athletes can "risk their lives"
Two-time Olympic champion and BBC Sport expert Michael Johnson fears that athletes could "risk their lives" trying to train for Tokyo 2020 and called for clarity in the IOC's decision-making process.
"The IOC must communicate the window to decide the 20 Olympics" tweeted the former US sprinter. "Athletes must continue training, but for many there is no place to train.
"They can risk their lives and others trying to continue training. The answer is not just to cancel as soon as possible. But to communicate the process to the athletes."
Meanwhile, Glen Mills, longtime coach of eight-time Olympic gold medalist Usain Bolt, asked the IOC to postpone the Games until 2021
Mills, who also trains British sprinter Zharnel Hughes, said: "That would be unprecedented, but this is an unprecedented time.
"Move everything up one year and then everything will return to its place.
"I don't think the Olympics will take place at the specified time [July and August] because the outbreak is worldwide and, in some countries, it is just beginning to accelerate ".
Speaking on the Today program on BBC Radio 4 on Thursday, World Athletics President Lord Coe said it was too early for organizers to make a final decision on whether to continue or postpone the Games.
IOC and Tokyo 2020 officials previously indicated that they would make an announcement by May.