Impact of chronic alteration in the circadian rhythm on lung function
Figure 2 showed that policemen working in an irregular and alternated scale presented impaired lung function, as denoted by reduced FVC (% predicted) (Figure 2A; p<0.0053) and FEV1 (% predicted) (Figure 2B; p<0.043). However, other parameters of lung function, such as FEV1/FVC (% predicted) (Figure 2C; p>0.05), PEF (% predicted) (Figure 2D; p>0.05), MEF25% (% predicted) (Figure 2E; p>0.05), MEF50% (% predicted) (Figure 2F; p>0.05), MEF75% (% predicted) (Figure 2G; p>0.05) and IN VC (% predicted) (Figure 2H; p>0.05) present no differences when compared to civil men.