Airline crewmembers experience increases in strain on the heart during the course of multi-day work periods, and the increased strain may result in increased risk of cardiovascular diseases, according to a small study by Northern European researchers.In their report on the study, published in the November 2019 issue of Aerospace Medicine and Human Performance, the Norwegian and Finnish researchers said that their study of 49 pilots and cabin crewmembers with a Norwegian airline found that cardiovascular strain was more prevalent on the fourth day of flight duty, compared with the first day.
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