著者

野田 茂德 Shigenori Noda

出版者

国際コミュニケーション学会

雑誌

国際経営・文化研究 = Cross-cultural business and cultural studies : 国際コミュニケーション学会誌 (ISSN:13431412)

巻号頁・発行日

vol.21, no.1, pp.63-71, 2016-12

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Spring of 1978 has come with the thunderstorm. After the storm, there was a blue sky. If the spring storm is an announcement spring seasons and end of winter, people can withstand the storm, however, natural phenomenon sometimes be very violent.Economist Kenneth E. Boulding has discussed "Limit exists in the Spaceship Earth" as a metaphor for the common destiny in his book "The Economics of the Coming Spaceship Earth" (1966).For the Spaceship Earth to reach mature society, there are many issues and difficulties need to be overcome. Can we expect the mature society after the spring storm for the crew of the Spaceship Earth? What are the fundamental issues and difficulties exist in the mature society?This paper is a study on this subject of "reality and problems of 1978 society".

著者

Keiko Unno Shigenori Noda Yohei Kawasaki Hiroshi Yamada Akio Morita Kazuaki Iguchi Yoriyuki Nakamura

出版者

SOCIETY FOR FREE RADICAL RESEARCH JAPAN

雑誌

Journal of Clinical Biochemistry and Nutrition (ISSN:09120009)

巻号頁・発行日

vol.61, no.3, pp.210-216, 2017 (Released:2017-11-01)

参考文献数

51

被引用文献数

26

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Epidemiological and animal studies have demonstrated that ingestion of green tea enhances healthy life. However, caffeine in green tea can interfere with sleep. In this report, we examined the effect of green tea with lowered caffeine, low-caffeine green tea, on stress and sleep of the elderly. The participants (n = 10, mean age 89.3 ± 4.2 years) drank five cups/day of standard green tea for 1 week. Subsequently, they drank five cups/day of low-caffeine green tea for 2 weeks. Salivary α-amylase activity (sAA) was measured as a stress marker. Sleep stages were measured using a portable electroencephalography (n = 7, 6 female and 1 male). The level of sAA in the morning (sAAm) was significantly lower when the participants drank low-caffeine green tea than standard green tea. While the levels of sAAm were different among individuals, lower sAAm correlated with a higher quality of sleep. In those participants whose sAAm was lowered by the ingestion of low-caffeine green tea, some sleep parameters improved. Daily ingestion of low-caffeine green tea may be a beneficial tool for improving the quality of sleep of the elderly via the suppression of stress, although further research is required to fortify this hypothesis.