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A New Definition of BMI Scale by Relationship between Respiration and Unconscious Behavior during Sleep with Body Motion Wave

A New Definition of BMI Scale by Relationship between Respiration and Unconscious Behavior during Sleep with Body Motion Wave
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Author(s): Jun'ya Wada (Graduate School of Engineering, Iwate University, Morioka, Japan), Tadashi Yajima (Graduate School of Engineering, Iwate University, Morioka, Japan), Takenori Imamatsu (Graduate School of Engineering, Iwate University, Morioka, Japan) and Hiroaki Okawai (Graduate School of Engineering, Iwate University, Morioka, Japan)
Copyright: 2014
Volume: 3
Issue: 2
Pages: 15
Source title: International Journal of System Dynamics Applications (IJSDA)
Editor(s)-in-Chief: Ahmad Taher Azar (Prince Sultan University, Riyadh, Kingdom of Saudi Arabi and Benha University, Egypt)
DOI: 10.4018/ijsda.2014040104

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Abstract

Recently, health problems due to overwork, apparent suicide produced by the progress of the social stress and lifestyle diseases and lifestyle diseases like hyperpiesia or obesity have been reported. From this, it has become of interest to avoid these problems and to keep the health. However, the indicators for health control and physical condition haven't been defined. Body Mass Index (BMI) has traditionally been used as an indicator of health. But, there are many unclear points left in the criteria of BMI to utilize. Sleep would be an important theme to know and to keep health. During sleep, the biological information related to health state would be appeared because of predominant activity of autonomic nervous system under the state of unconsciousness. From these, the authors investigated the relationship between BMI and autonomic nervous activity. Nineteen healthy young adults participated in this study and performed sleep experiment by adopting a pressure sensor named “dynamic air-pressure sensor” and a pressure sensor array. As a result, the authors found some relationships among respiration state, motions of muscles and unconscious behavior depending on BMI. This result about sleep behavior would suggest a new definition for BMI. For example, large value of BMI brings influences, maybe bad, to respiratory behavior during sleep.

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