2017 Fiscal Year Final Research Report
Effects of physical activity intervention on the circadian rhythm of body temperature and the amount of salivary melatonin at bedtime in elementary school students
| Project/Area Number |
15K01504
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Developmental mechanisms and the body works
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Research Collaborator |
SHIBATA SHIORI 神戸市看護大学, 看護学部, 准教授 (70254480)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | サーカディアンリズム / 体温 / 子ども / 身体活動 |
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| Outline of Final Research Achievements |
The level of physical activity (PA) in children changes with seasons; it decreases during winters when the outside temperatures are low. During winter, various circadian rhythm phases, including those for body temperature, are believed to be delayed.
The current study indicates that the levels of PA and melatonin of elementary school children at bedtime during the winter decreases, indicating delayed phases of body temperature rhythm. This in turn suggests the possibility that body temperature decreases at wake-up time. However, if high levels of PA can be maintained or increased because of exercise intervention during winter, it may help maintain and even advance the body temperature rhythm phases.
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| Free Research Field |
運動科学
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