The study on synchronization of circadian rhythms for the elevation of level of activity of daily living in the disabled elderly

本研究的结果表明，在残疾老年人的生理反应的外部Zeitgeber或同步减少，内部去同步化的昼夜节律的频率增加。因此，失能老年人的日常生活活动能力有下降的趋势。对连续监测的血压和心率数据的分析支持了这一假设。社会接触的刺激和白天强烈的阳光照射被认为是预防残疾老年人昼夜节律内部去同步化的有效措施。如何规划社会交往和阳光照射的时间表，还有待于将来进一步研究。对老年人生活节奏与健康的自填问卷调查结果表明，老年人的日常生活活动能力水平与生活节奏模式（如晨起）密切相关 关于我们 s-eveningness preference和社会网络强度，提示加强社会网络的社会支持有助于增强身体机能昼夜节律的同步性。在本研究中观察到，老年人的昼夜节律的内部去同步化的频率比年轻人更频繁。连续记录法估计的心率节律昼夜幅度反映了老年人的体力活动水平。这一易于测量的生理变量是评价老年人日常生活活动能力的良好指标。结论：老年人的昼夜节律的同步性对提高老年人的日常生活能力具有重要作用，在社区卫生服务中，在确定老年人家庭护理所提供的社会交往的数量和质量时应考虑到这一点。少

The results of the present study revealed that the physiological responses to the external Zeitgebers or synchronizers in the disabled elderly persons decreased and the frequency of internal desynchronization of circadian rhythm increased. For this reson, the level of activity of daily living tended to decrease in the disabled elderly persons. The analyzes of continuously monitored data of blood pressure and heart rate supported this hypothesis. The stimulation of social contacts and the exposure to intense sunlight during daytime are thought to be effective measures to prevent the internal desynchronization of circadian rhythm in the disabled elderly. It remains to be further investigated in the future how to plan a schedule of social contacts and sunlight exposure. It has been shown by the selfcompleted questionnaire on life rhythm and health for the active elderly persons that the level of activity of daily living was closely associated with pattern of life rhythm such as morningnes … More s-eveningness preference and the intensity of social network, which suggested that social support for strengthening the social network was useful for intensifving the synchronization of circadian rhythm of body functions. It has been observed in the present study that the frequency of internal desynchronization of circadian rhythm was more frequent in the elderly persons than in the younger persons. The circadian amplitude of heart rate rhythm estimated by the continuous recording method reflected the level of physical activity of the elderly persons. This easily measured physiological variable serves as a good indicator for evaluation the activity of daily living in the elderly. In conclusion, it has been clarified that the synchronization of circadian rhythm plays an important role in the elevation of activity of daily living in the disabled elderly, which should be considered in the determination of quantity and quality of social contacts provided by the home care of the disabled elderly in the piblic health services. Less