Isinbayeva, the two-time Olympic pole vault champion, is excluded from Rio 2016 due to the suspension of Russian athletes imposed by the IAAF following allegations of state-supported doping. 

She was elected, though, onto the IOC's Athletes' Commission here on Thursday (August 18) and should be formally ratified into the role tomorrow.

The 34-year-old criticised Coe, who she supported last year during his successful campaign to become IAAF President, for "avoiding all meetings" with her.

She also claimed to have received congratulations from just one member of the world governing body and not from Coe.

The Briton has been fiercely criticised in Russia but has received praise elsewhere for the IAAF decision to continue the suspension of the All-Russia Athletic Federation since it was introduced last November following an investigation by the World Anti-Doping Agency Independent Commission led by IOC member Richard Pound. 

Isinbayeva, who has never been implicated of doping, has been among his most vocal critics.

Coe insisted today, though, that he had written a letter and intends to personally deliver it to the pole vaulter "when he has an opportunity".

He initially blamed his well-known unfamiliarity with emails for no message having been sent, but then claims he had wanted to "wait two days" until the situation had calmed down.

The precise contents of this letter was not revealed, but said he believes her election "strengthens the position of the sport [of athletics] in the Commission and on the IOC."

Isinbayeva was elected in fourth place onto the Commission along with German fencer Britta Heidemann, Hungarian swimmer Daniel Gyurta and South Korean table tennis player Ryu Seung-min.

She also claimed yesterday that the winner of the pole vault competition here would have an "asterisk against their name" due to her absence.

"The champion will feel it's not entirely gold because she didn't beat Isinbayeva," she said.

These comments have been criticised by medal winners following the competition.

"I definitely understand how she could be so frustrated," said United States' second-placed finisher Sandi Morris.

"I can't imagine what it would be like to be in her shoes, to be banned from the Olympics because of things that went down in your country.

"But her comments can be disrepectful and hurtful to people who were out there tonight - it's kind of disappointing to hear things like that."

New Zealand's bronze medallist Eliza McCartney supported that view. 

"It down to who was there on the day, and we were there on the day and that's what's important," she said.

"Maybe those comments aren't so necessary."