What Researchers Did
Researchers studied how a single scuba dive to 50 meters affected lung function in sport divers with a history of hay fever compared to healthy divers.
What They Found
Both groups of divers experienced a 3% reduction in forced vital capacity (FVC) 24 hours after the dive. However, only divers with respiratory atopy showed a 15% decrease in specific airways conductance (sGaw) 24 hours post-dive. Airway hyperresponsiveness was also found in 8 out of 9 atopic subjects.
What This Means for Canadian Patients
Canadian sport divers with respiratory allergies, even if asymptomatic, may experience greater changes in their lung function after a single dive. This suggests that individuals with conditions like hay fever should be aware of potential respiratory effects when participating in scuba diving.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study involved a small number of participants and only examined the effects of a single dive, limiting its generalizability to frequent or multiple dives.