But Paula insists she is not retiring, although she says she has not yet made a decision about whether she will be running for Britain in the 10,000m.

Paula dropped out of Sunday's marathon with three miles of the race to go.

"I was struggling to stay on the road and I felt numb," said Paula, who holds the world record for the event.

"I can't look to the conditions as an excuse because it was the same for everyone. I just did not think I could make it."

Decision

Asked about the 10,000m, Paula said: "It is not a decision I am going to make in the next 24 hours.