A spokesman for the X Games has told insidethegames, however, that they are not prepared to change the event guidelines, although they are happy for testers to come and carry out doping tests.

The five-day event, which follows last month's Winter X Games in Aspen, is set to mark the first time both summer and winter sports will be contested internationally at the same X Games event.

As well as male and female snowboard and freestyle skiing big air and superpipe events, male and female street skateboard competitions will take place.

"We have been informed this morning that there will be no anti-doping testing in compliant with WADA (World Anti-Doping Agency) rules," Bach said here ahead of the Closing Ceremony of the Winter Youth Olympic Games.

"You know our clear position with regard to clean athletes.

"We want to see them protected in all sports events.

"We will discuss this issue with WADA."

Bach also vowed to discuss the issue with the Norwegian Government, as they have signed-up to the World Anti-Doping Code.

Both snowboarding and freestyle skiing are sports which are currently on the Olympic programme, although under the umbrella of the International Ski Federation, which has no involvement in the X Games.

Skateboarding is one of five new sports proposed for inclusion at the Tokyo 2020 Summer Olympic Games.

The Oslo event is due to be aired on ESPN and TV2, the leading commercial broadcaster in Norway.

United States' Chloe Kim, a double Youth Olympic gold medal winner here last week, is among those expected to compete.

“Since the beginning of this project, and in accordance with the agreement that is in place for X Games Oslo, we have consistently communicated that X Games is an independent event, with its own guidelines for competition and athlete participation," an X Games spokesperson told insidethegames.

"At X Games Oslo, the federations can operate as they have for 20 years at X Games events around the world and we are happy to provide accreditation and space for them to perform their normal ‘out of competition’ testing procedures.

"However, we are not prepared to change the X Games guidelines for participation at this time.

"As proponents of fair play, and as we do with all aspects of the X Games, we regularly evaluate our processes and policies.

"If at any time we believe there is an issue, we will address it and make necessary adjustments.”

insidethegames has also contacted WADA for a reaction to Bach's concerns.