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Characteristics of Sleep and Autonomic Activity in Active Older Adults Based on Metabolic Age: A Comparative Case Study
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作者 Miki Sato Ryuichi Tanioka +4 位作者 Feni Betriana Kyoko Osaka Yueren Zhao Tetsuya Tanioka akira takahashi 《Open Journal of Psychiatry》 2023年第4期229-245,共17页
Background: The balance of autonomic nervous system activity and its relationship with body composition, sleep quality, and activities of daily living among older people is still unclear. Purpose: This comparative cas... Background: The balance of autonomic nervous system activity and its relationship with body composition, sleep quality, and activities of daily living among older people is still unclear. Purpose: This comparative case study examined the characteristics of body composition, sleep quality, and autonomic nerve activity in active older adults with a younger body age-calculated from age trends in body composition and basal metabolic rate. Methods: We selected two cases with a metabolic age younger than their actual age. They had good sleep quality, no sarcopenia, strong muscle and grip strength, and balanced autonomic nervous system activity. They were compared with two other age- and gender-matched cases, who had poor sleep quality, unbalanced autonomic nervous system activity, and had a physical age closer to their actual age. Results: Older adults with more muscle mass and higher basal metabolism were younger than their actual age, had a better sleep status, and had a good balance of autonomic nervous activity during exercise stimulation. They also had lower percentages of body and visceral fat and higher percentages of body water. Conclusion: Two cases had a metabolic age younger than their actual age were found to be much younger than their actual age. However, the older adults with normal muscle mass and basal metabolic rate had poor sleep status and no sympathetic hyperactivity during exercise simulation. 展开更多
关键词 Healthy Aging Autonomic Nervous Activities Heart Rate Variability Sleep Status WELL-BEING
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一种新型桥梁结构——镂空蝴蝶形腹板桥梁的设计和施工 被引量:4
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作者 黄睿奕 Yuki KAMINAGA +1 位作者 Kenichiro ASHIZUKA akira takahashi 《中外公路》 北大核心 2017年第3期149-151,共3页
该文介绍了日本的一座新型桥梁结构,镂空混凝土腹板桥梁,又叫蝴蝶形腹板梁桥。这种桥梁结构形式采用工厂化预制的蝴蝶形腹板。与传统混凝土箱形梁桥相比,这种新型结构梁桥的恒载自重减轻了大约10%,与此同时,预应力钢筋数量和下部结构尺... 该文介绍了日本的一座新型桥梁结构,镂空混凝土腹板桥梁,又叫蝴蝶形腹板梁桥。这种桥梁结构形式采用工厂化预制的蝴蝶形腹板。与传统混凝土箱形梁桥相比,这种新型结构梁桥的恒载自重减轻了大约10%,与此同时,预应力钢筋数量和下部结构尺寸也随之减小,大大节约了工程造价。该桥型具有自重轻、可工厂化预制、施工工期短、养护费用低和环保等诸多优点,适用于中小跨径桥梁的设计和施工。 展开更多
关键词 预制面板 钢纤维混凝土 设计 施工进度
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Evaluation method of dam behavior during construction and reservoir filling and application to real dams
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作者 Yuji KOHGO akira takahashi Tomokazu SUZUKI 《Frontiers of Structural and Civil Engineering》 SCIE EI 2010年第1期92-101,共10页
In this paper we analyzed a real fill-type dam,named the Minami-Aiki Dam,to verify a numerical consolidation method with an elastoplastic model for unsaturated soils.The validities were conducted by comparing the anal... In this paper we analyzed a real fill-type dam,named the Minami-Aiki Dam,to verify a numerical consolidation method with an elastoplastic model for unsaturated soils.The validities were conducted by comparing the analyzed and measured values during construction and impounding.The settlements calculated showed good agreement to those observed.Though the changing patterns of the measured and calculated pore water pressures were similar,the amounts of pore water pressures induced by the self-weights of embankment and the dissipation speeds were different.The earth pressures measured at the bottom of the core zone showed good agreement with those calculated.This method is valid for estimating behavior of fill-type dams during construction and impounding. 展开更多
关键词 fill dam consolidation analysis unsaturated geo-materials impounding construction
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