Physiological stress monitoring of postmen during work.

The purpose of the present study was to characterize the physiological demands of postmen during a work day composed of mail sorting (inside work, IW) and cycling distribution (outside work, OW). Two groups of postal workers were constituted according to the geographical profile of their distribution courses: flat profile (FP; n = 7) vs hilly profile (HP; n = 7). Heart rate (HR) was recorded and energy expenditure (EE) was estimated during both IW and OW.