
Keywords: Hb، هموگلوبین; ∆, Change; ANOVA, Analysis of variance; BP, Blood pressure; CO, Carbon monoxide; CON, Control; C-RP, C-reactive protein; Crt, Cortisol; FEV1, Forced expiratory volume at 1 s; FSI, Fire service instructors; FVC, Forced vital capacity; Hb, Haemoglobin; Hct,