Reduced exercise tolerance and pulmonary capillary recruitment with remote secondhand smoke exposure.

PLoS One · 2012 · PMC3321018 · PMID 22493689

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showed a trendno p-value reported

While neither DcoSB nor DcoWB at rest were associated with years of SHS exposure, DcoWb during exercise showed a trend towards inverse association with years of cabin SHS exposure.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.