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Investigating the circulatory-respiratory response of elderly people during Tai Chi Yuttari-exercise

Health 2013年第12期5卷 58-63页

作者： Takuo Nomura Yoshiteru Akezaki Kohei Mori Emi Nakamata fuminari asada Yoshiaki Mori Satoru Kai Masahito Watanabe Department of Rehabilitation Sciences Kansai University of Welfare Sciences Osaka Japan Department of Rehabilitation Sciences Kansai University of Welfare Sciences Osaka Japan Theraputic Exercise Research Laboratory Kansai University of Welfare Sciences Osaka Japan Osaka Rosai Hospital Center for Preventive Medicine Osaka Japan

The purpose of this study was to examine the circulatory-respiratory dynamics in elderly people during Tai Chi Yuttari-exercise. The subjects were females with an average age of 74 years who had been continuously practicing Tai Chi Yuttari-exercise for at least six months. The heart rate and blood pressure were measured before and after the subjects performed four different versions of Tai Chi Yuttari-exercise. The perceived exertion was evaluated using the Borg scale. The respiratory rate, oxygen uptake and respiratory quotient (RQ) were measured using an expired gas analyzer. The results showed an increase in heart rate during exercise, but confirmed that the rise in HR was below the safety limit. The blood pressure tended to be low post-exercise. Regarding perceived exertion, the maximum heart-lungs Borg scale response was 9 (very light). A slight increase in the respiratory rate was observed while exercising, but no abnormal breathing patterns were observed. The average metabolic equivalents (METs) of the exercise ranged from 1.34 to 1.87, and the average RQ ranged from 0.82 to 0.90. The circulatory-respiratory dynamics observed in this study verified that elderly females with an average age of 70 years could safely perform the Tai Chi Yuttari-exercise. This study helped obtain basic data for expanding the indications for this exercise.

关键词： Tai Chi Chuan Exercise Therapy Aged Circulatory and Respiratory Physiological Phenomena Rehabilitation

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Comparative assessment of primary and secondary infection risks in a norovirus outbreak using a household model simulation

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Journal of Environmental Sciences 2016年第12期28卷 13-20页

作者： fuminari Miura Toru Watanabe Kozo Watanabe Kazuhiko Takemoto Kensuke Fukushi Department of Urban Engineering Graduate School of Engineering the University of Tokyo Department of Food Life and Environmental Sciences Faculty of Agriculture Yamagata University Department of Civil and Environmental Engineering Ehime University Institute for the Advanced Study of Sustainability the United Nations University Todai Institutes for Advanced Study(TODIAS) Integrated Research System for Sustainability Science(IR3S) The University of Tokyo

Diarrheal diseases can be transmitted via both primary infection due to exposures to contaminated materials from the environment and secondary infection due to person- to-person contacts. Usually, the importance of secondary infection is empirically assessed by fitting mathematical models to the epidemic curves. However, these empirical models may not be applicable to other epidemic cases because they are developed only for the target epidemics and they don＇t consider the detail routes of infection. In our previous study, we developed a theoretical model taking into account the various routes of infection that commonly occur in households （e.g., shaking hands, food handling, and changing diapers）. This model was made flexible and applicable to any epidemics by means of adjusting model parameters. In this study, we proposed a new index ＂Vulnerability indicator to secondary infection （VISI）＂, which expressed a ratio of secondary infection to primary infection risks and calculated this index in a simulated norouirus （NOV） epidemic that involved I0,000 households. The results demonstrated that households composed of more than three members including infant（s） had much higher levels of VlSl （5-45） than two-member-households with VlSI （0.1-4）. These results concluded that the infants were likely to be a hub of secondary infections in highly dense families and therefore careful handling of diapers was deemed indispensible in such families to effectively control the secondary infections.

关键词： Norovirus Quantitative microbial riskassessment Secondary infection

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