Mo Farah says athletics is "moving in the right direction" following recent doping scandals in the sport.
Allegations of widespread doping in Russia are being investigated by the International Association of Athletics Federations (IAAF).
IAAF president Lamine Diack has told the BBC athletics faces a "crisis".
But double Olympic champion Farah, 31, told BBC Radio 5 live's Sportweek programme: "We've come a long way and are moving forward."
Fellow Olympic gold medallist, long jumper Greg Rutherford, has said he does not want his son taking up athletics until the sport gets "sorted".
He was echoing earlier comments by BBC pundit and former sprinter Darren Campbell, who said he had "lost faith" in athletics.
World 5,000m and 10,000m champion Farah, though - who broke the indoor two-mile world record on Saturday - said he had no qualms about supporting his children should they want to move into athletics.
A German television documentary last year alleged "99%" of Russian athletes were engaged in doping - a claim Russian athletics dismissed as a "pack of lies".
However, Russian athletics federation president Valentin Balakhnichev recently stepped down from his role after the doping scandal.
Farah said the challenge the sport faced was in ensuring other nations - such as Russia - were as staunchly anti-doping as Britain's administrators.
He said: "How can we get other countries to apply the same rules as us, how can we be fair?"
Lord Sebastian Coe, who played a key role in making the 2012 London Olympic Games such a successful event, is hoping to become president of the IAAF and Farah said Coe could bring real change to world athletics in terms of an anti-doping agenda: "I have great faith in him," he said.
Russian doping allegations: in brief
The allegations include:
- Russian athletes were supplied banned substances in exchange for 5% of their earnings and colluded with doping control officers to hush up and falsify tests.
- IAAF officials are implicated in covering up Russian doping - including Diack's son, IAAF marketing consultant Massata Papa Diack, Valentin Balakhnichev, the IAAF treasurer and Russian Athletics Federation president, and IAAF legal adviser Habib Cisse.
- The IAAF decided not to look into 150 suspicious blood samples between 2001 and 2008, including an unnamed top British athlete.