Secondary |
Kongerud |
1991 |
Norway |
LMW |
Metals |
Aluminum |
Aluminum potroom workers |
Work-related asthmatic symptoms (dyspnea, wheezing) |
Use of respiratory equipment (powered respirator helmet - 1 week, disposable mask - 1 week) |
19 of 25 eligible subjects (Participation rate: 76%) |
Fifteen of 19 subjects had higher peak expiratory flow rate (p<0.01) during the helmet period than non-helmet period. The mean symptom score was higher in the non-helmet period, but the difference in symptom reporting between the two periods was not statistically significant (p=0.38). |