What Researchers Did
This case-control study evaluated changes in pulmonary function over 12 months in hyperbaric chamber inside attendants compared to a sex- and age-matched control group.
What They Found
After 12 months, FEV1, FEV1/FVC%, FEF25-75%, and FEF50% significantly decreased in both inside attendants and controls (p0.05). In inside attendants, the total number of exposures correlated positively with the rate of reduction in FEF25% (r=0.788, p=0.004).
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
A key limitation is the short 12-month follow-up period, which may not capture long-term pulmonary changes in inside attendants.