Seasonal cold and circadian changes in blood pressure and physical activity in young and elderly people

摘要

Aim: to test the hypothesis that there is no association between seasonal cold and the circadian responses of blood pressure, deep-body temperature and physical activity in health young and elderly men. Methods: 25 healthy elderly (aged 70-82 years) and 21 young volunteers (aged 20-30 years) participated in a 3-year Prospective cross-seasonal study. Results: ambulatory day-time blood pressures in the older men were higher in the winter than in the summer and Higher in both seasons than in the young people.