The Prediction of recommended energy expenditure for an 8 h work-day using an air-purifying respirator

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      <subfield code="a">Air-purifying respirators equipped with particle and/or gas-removing filters are worn usually during light or moderately heavy tasks of extended duration in atmospherically-hostile environments. The aim of this study was to quantify the effect of mask use at a work level corresponding to about 40% of the subject'a aerobic capacity, and to more clearly define the suitability of mask use for prolonged activity</subfield>
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