Is there an association between severe job strain, transient rise in blood pressure and increased mortality?
GROUND: Job strain may be associated with various diseases and increased mortality but there is little data available from prospective studies with long-term follow-up. OBJECTIVE: To assess the effect of heat exposure followed by severe job strain on blood pressure, heart rate and mortality. DESIGN: Prospective 19-year observational study (1982-2000) of a cohort of employees in a ferry alloy plant undergoing two economical crises. The participants were 218 healthy males aged 30-59 years. MEASUREMENTS: Annual standardized measurements of blood pressure, heart rate, serum cholesterol and registration of morbidity and mortality. RESULTS: Heat-exposed men (n = 25) and non-heat-exposed men (n = 193) had unchanged blood pressure from 1982 to 1984. Thereafter the plant underwent two serious economic crises, in 1985-87 and 1990-91, respectively. The first one was handled by decisions exclusively taken by the head office and included a gradual lay-off of 25% of the workers, and the second one w
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