A 2026 study published in Frontiers in Sports and Active Living examined the frequency and impact of respiratory viral infections among 81 professional ice hockey players and 18 staff members across three Finnish teams during a competitive season.
Researchers found that 93% of players experienced at least one respiratory illness, with COVID-19, rhinoviruses, and influenza A among the most frequently identified viruses. Illnesses also affected team availability, with 34% of documented symptomatic episodes resulting in missed games and 52% in missed practices.
The study also identified potential viral transmission within teams and elevated carbon dioxide levels in one team’s locker room, raising concerns about ventilation in shared athletic environments.
These findings reinforce the importance of comprehensive infection-prevention strategies in professional sports, including adequate ventilation, improved indoor air quality, and the potential use of HEPA air filtration to help reduce respiratory infection risks.
Source: Frontiers in Sports and Active Living
Authors: Grönroos et al.
Published: June 23, 2026
DOI: 10.3389/fspor.2026.1832991
