Murase S, Murase S, Kitabatake M, Yamauchi T, Mathé A A
Department of Public Health, Mie University School of Medicine, Japan.
Acta Psychiatr Scand. 1995 Jul;92(1):51-5. doi: 10.1111/j.1600-0447.1995.tb09542.x.
Depressive symptoms estimated by the Beck Depression Inventory (BDI) were examined in winter and summer in a total of 242 Japanese adults staying less than 2 years or longer than 10 years in Stockholm, where the length of daylight changes dramatically throughout the winter and summer seasons. In spite of the difference in the period of residency, both groups of subjects showed more mental and somatic depressive symptoms in the winter than in the summer. Moreover, the winter BDI score of long stayers was significantly higher than that of short stayers. Accordingly, our results suggest that, although seasonal mood variation is essentially produced by a chronobiological factor, Swedish lifestyle to which long stayers have been accustomed also influences the seasonal mood variation.
通过贝克抑郁量表（BDI）评估的抑郁症状，在冬季和夏季对总共242名在斯德哥尔摩居住不到2年或超过10年的日本成年人进行了检查，在那里，冬季和夏季的日照时长变化很大。尽管居住时间不同，但两组受试者在冬季的精神和躯体抑郁症状都比夏季更多。此外，长期居住者的冬季BDI得分显著高于短期居住者。因此，我们的结果表明，虽然季节性情绪变化本质上是由生物钟因素引起的，但长期居住者所习惯的瑞典生活方式也会影响季节性情绪变化。
