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. 1981 May;38(2):152-5.
doi: 10.1136/oem.38.2.152.

Ventilatory function changes over a workshift

H D Dimich, T D Sterling

Ventilatory function changes over a workshift

H D Dimich et al. Br J Ind Med. 1981 May.

Abstract

Thirty-four production workers at three chemical plants were tested for acute changes in lung function over the course of their three-day, twelve-hour workshift. Mean percentages of the predicted lung function indices (FVC, FEV, and FEF 25-75) showed a workshift decrement, particularly evident in the evening shift. A workweek effect was shown in that no recovery in mean %FEV1 and %FEF-25-75 was shown by the last working day. Diurnal variation in respiratory function was regarded as being only partly responsible for the observed workshift effect.

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