Since taking over from the disgraced Lamine Diack, Coe has had to battle through a scandal that has seen Russia banned over "state-sponsored" doping and a raft of top officials, including Diack, accused of taking bribes from doped athletes.
"The last few months have been a real challenge, you would be surprised if I said it wasn't. The sport has been hit hard," Coe said in a wide-ranging interview.
In a career that has seen him win two Olympic 1500m gold medals before becoming a successful businessman and a member of the British parliament, Coe knows how to dodge and take a bullet or two.
The 59-year-old found himself at the eye of the storm after a World Anti-Doping Agency (WADA) independent commission published two damning reports detailing "embedded" corruption within the top echelons of the IAAF.
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Coe, who served eight years as a vice-president under Diack, was a member of the IAAF Council that should have been aware of the astonishing level of corruption, WADA said.
"I'm grateful to the independent commission because they have spent a lot of time helping shed light onto something we need to understand as much as we possibly can," Coe said.
"I took some comfort from some of the conclusions that our systems are not chronically broken, that the IAAF has a good record in addressing these issues, that it did do the pioneering work on the blood passport and accredited laboratories, and, in their (WADA) words not mine, the IAAF did follow up where it was at all possible.