Norwegian Biathlon Federation Clarifies Altitude Mask Use After Athlete Sivert Bakken's Death
December 26, 2025
News & Politics

Norwegian Biathlon Federation Clarifies Altitude Mask Use After Athlete Sivert Bakken's Death

Federation discontinues altitude mask use pending investigation following athlete’s sudden passing in Italy

Summary

The Norwegian Biathlon Association announced that the altitude mask worn by Olympic hopeful Sivert Guttorm Bakken, found deceased during a training camp in Italy, is not endorsed within their structured training programs. Bakken, a European champion preparing for the 2026 Winter Olympics, was discovered at high elevation wearing the performance-improving device. The federation has since suspended use of altitude masks pending further investigation.

Key Points

The Norwegian Biathlon Association stated that altitude masks are not part of its organized training protocol, although some athletes have individually acquired such devices.
Sivert Guttorm Bakken, a 27-year-old Olympic hopeful and reigning European champion, was found deceased in Italy while using an altitude mask at a high-altitude training location.
Bakken had a prior diagnosis of myocarditis in 2022, which caused him to miss two competitive seasons before returning to racing.
Following Bakken's death, the Norwegian federation has banned the use of altitude masks pending further evaluation.
Official investigations by Italian authorities are ongoing to determine the exact cause of Bakken’s death, with a report expected in the near future.
Bakken had actively competed as recently as the previous weekend, showing ongoing participation at an international level.
Norway continues to lead the sport of biathlon globally, having won six gold medals and 14 total medals at the 2022 Winter Olympics, twice the medal count of second-ranked France.
The federation urges caution in speculating about the circumstances and stresses compliance with Olympic Council guidelines regarding altitude equipment.
The Norwegian Biathlon Association addressed concerns regarding the altitude mask worn by 27-year-old Sivert Guttorm Bakken, who was discovered dead in his hotel room earlier this week in Lavaze, Italy. Situated at the Lavaze Pass with an elevation of approximately 1,808 meters, the location was a high-altitude training environment. Bakken had been using an altitude mask designed to simulate high-altitude conditions, which can enhance endurance, but the federation confirmed this equipment was not part of their official training regimen.

In a statement released on Friday, the federation clarified, “The use of such equipment is not part of the Norwegian Biathlon Association’s organized training programs. However, we acknowledge that a few athletes have individually obtained such devices. Any usage must adhere to the guidelines set by the Olympic Council and does not violate Norwegian sports regulations.” Following Bakken’s death, the federation promptly prohibited the use of altitude masks until further notice.

Sivert Guttorm Bakken was the reigning European champion in the 10-kilometer sprint and two relays. As a promising contender, he was preparing to participate in the 2026 Milan Cortina Winter Olympics. His competitive record included one individual World Cup victory along with three relay wins.

Bakken’s competitive activities continued up to the previous weekend. On Sunday, he completed a 15-kilometer mass start race in Annecy, France, finishing 20th, and the day before, he secured 18th place in the 12.5-kilometer pursuit.

Bakken had been diagnosed with myocarditis, a heart condition, in 2022, leading him to sit out two competitive seasons. The presence of the altitude mask at the scene has raised questions surrounding its role, if any, in his sudden passing.

Bernt Heiberg, a lawyer for the federation, stated, “There are numerous rumors and unconfirmed reports surrounding Bakken’s death. We will withhold further comment until the Italian police and forensic authorities complete their investigation and report their findings, which we expect will take place next week.”

Heiberg further emphasized, “Although reports indicate that Bakken was wearing an altitude mask when found, there is no verified information about its influence on the cause of death. We urge restraint in discussing unverified details until official confirmations emerge from Italian authorities.”

An autopsy was scheduled to take place in Italy before Bakken’s remains could be repatriated for funeral arrangements.

Norway maintains a dominant position in the sport of biathlon, having achieved six gold medals and a total of 14 medals at the Beijing Winter Olympics nearly four years ago. This medal count is twice that of the second-place nation, France, which secured seven medals.

As investigations continue, both the biathlon community and wider sports audiences await clear information on the circumstances surrounding the athlete’s death and the implications of altitude mask use in training environments.
Risks
  • Uncertainty remains regarding the role of altitude masks and their safety in athlete training, particularly in individuals with pre-existing health conditions such as myocarditis, potentially impacting athlete health protocols in sports.
  • Pending investigation results contribute to speculation and may affect public and athlete confidence in training methodologies involving altitude simulation equipment.
  • Use of undisclosed or individually acquired training equipment may pose regulatory and compliance challenges for sports federations.
  • The sudden death of a high-profile athlete could influence the regulatory environment in biathlon and similar endurance sports, potentially affecting equipment approvals and athlete monitoring.
  • Potential scrutiny of training practices at high elevations may have implications for teams preparing for future Olympic events, influencing preparation and resource allocation.
Disclosure
This article is based on reported facts from official statements by the Norwegian Biathlon Association and information provided by legal and investigative sources related to the death of athlete Sivert Guttorm Bakken. No additional speculation or unverifiable information has been included.
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