In this age of artificial intelligence, data tampering and genetic manipulation, it seems that the nature of fraud and deception in competitive sport is becoming increasingly sophisticated. So, it seems almost surprising to see cheating in sport take a relatively old-fashioned form of late: tampering with equipment.
Yet that’s precisely what unfolded last month in ski jumping, a winter sport whereby athletes soar down a ramp, take flight and aim to maximise both distance and technique. Over the last few months, several ski jumpers and their management have been suspended from the sport due to the intentional illegal tampering and modification of the suits they wear.
The case first came to light during the 2025 FIS Nordic World Ski Championships held in Trondheim in March. Two Norwegian athletes, Marius Lindvik and Johann Andre Forfang, were subsequently disqualified from the men’s large hill event due to allegations of illegal ski jump suit manipulation with the intention of improving their performance.
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A subsequent investigation revealed that their ski suits had been illegally altered. In response, the International Ski and Snowboard Federation (FIS) provisionally suspended the two athletes, along with three Norwegian national team officials – including the head coach and their equipment manager. Both athletes ultimately admitted the illegal alterations.
The scandal then intensified as FIS expanded its investigation which then subsequently led to the suspension of three other Norwegian ski jumpers. Several members of the team were all found to have been involved in the decision to modify the suits for the championships.
This wasn’t the sport’s first brush with controversy surrounding its suits. At the 2022 Winter Olympics, several jumpers there were disqualified for wearing suits that were deemed too large, again raising concerns about fairness.
What did the cheating intend to achieve?
A successful ski jump can be divided into several phases: in-run, take-off, early flight, stable flight, landing preparation, and landing. The suit contributes to enhancing the performance in all of these phases by directly affecting the aerodynamics and flight characteristics of the athlete. As a result, the size and shape of the suit is heavily regulated.
In the case of this scandal, the Norwegian Ski Federation general manager told a news conference that a reinforced thread or an extra seam had been put in the jumpsuits of the first two athletes that were suspended.
This additional material was inserted into the crotch area of the suits, increasing the surface area and stiffness, potentially providing extra lift during a jump’s flight phases. This extra lift would essentially translate into an increase in flight time and therefore a potential increase in the jumping distance. These modifications were not detectable through standard visual inspection and were only discovered upon detailed examination of the suits by then tearing them open.
Of course, cheating in sport is not a new phenomenon. However, in some cases, such controversies are not cheating per se, but merely new technologies emerging that challenge our perceptions of a sport and its values.
Some examples of this were the use of full-body swimsuits at the Sydney Olympics in 2000, or the potential use of prosthetic legs in track athletics at the Beijing Olympics in 2008.
However, sometimes cheating can occur whereby sports equipment is intentionally modified physically to provide a competitive advantage. A recent example of this is the Australian cricket ball tampering scandal in 2018 where balls were intentionally scuffed by players to change their behaviour when bowled.
Improving a piece of sports equipment to increase its performance is the field of mechanical ergogenics, or, when illicitly performed, colloquially known as “technodoping”.
Some consider that the physical capabilities of athletes in some sports have now plateaued to the extent that any future improvements in performance will need to rely predominantly on technological innovation. So perhaps it can be understood why the suits were targeted in this particular sport.
In April 2025, the FIS decided to lift the provisional suspensions of the five Norwegian athletes under investigation for suspected involvement in suit tampering because it is the competitive off-season.
However, the ban for the officials involved remains in place. In the wake of the scandal, FIS has now implemented stricter regulations to prevent future instances of equipment manipulation. These key measures included limiting athletes to a single, pre-approved suit for the year’s competitions, and the FIS storing and inspecting all suits.
These reforms aim to uphold the integrity of ski jumping and will hopefully restore confidence in the sport itself. The 2025 scandal stands as a clear reminder that in the pursuit of victory, sports must remain vigilant – because when innovation outpaces fair play, integrity is the first casualty.
Bryce Dyer does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
This article was originally published on The Conversation. Read the original article.
