The authors of the report told the British newspaper that the International Association of Athletics Federations (IAAF) blocked publication of the study, which was carried out four years ago.
"The IAAF's delaying publication for so long without good reason is a serious encroachment on the freedom of publication," the University of Tuebingen in Germany, which carried out the research, said in a statement according to the paper.
Researchers from the university were given access to elite athletes at the 2011 world championships in Daegu, South Korea and concluded in their research that between 29 and 34 percent of the 1,800 competitors at the championships had violated anti-doping rules in the previous 12 months.
The study was funded by the World Anti-Doping Agency (WADA), but they gave the IAAF power to veto publication in exchange for access to the athletes at Daegu, WADA confirmed to The Sunday Times Friday.
In the months after conducting the study, the researchers were told to sign a confidentiality agreement to prevent them speaking out about the findings but they have now criticised the IAAF for suppressing the report.
"The IAAF is blocking it. I think they are stakeholders with Wada and they just blocked the whole thing," lead author Rolf Ulrich told The Sunday Times.
In early August, the newspaper published a separate report on a leaked database of 12,000 blood tests from 5,000 athletes that revealed "extraordinary" levels of doping, and sent shock waves through the sporting world.
The IAAF hit back at the allegations describing them as "sensationalist and confusing".
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
