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Your search keyword '"Niki, Yoshifumi"' showing total 22 results
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22 results on '"Niki, Yoshifumi"'

3. Estimation Accuracy of Step Length by Acceleration Signals: Comparison Among Three Different Sensor Locations

Author

Ueda, Tomoya, Takayanagi, Naoto, Kobayashi, Yoshiyuki, Sudo, Motoki, Miwa, Hiroyasu, Hobara, Hiroaki, Hashizume, Satoru, Nakajima, Kanako, Niki, Yoshifumi, Mochimaru, Masaaki, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Bagnara, Sebastiano, editor, Tartaglia, Riccardo, editor, Albolino, Sara, editor, Alexander, Thomas, editor, and Fujita, Yushi, editor

Published
2019
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4. Estimation Accuracy of Average Walking Speed by Acceleration Signals: Comparison Among Three Different Sensor Locations

Author

Kobayashi, Yoshiyuki, Sudo, Motoki, Miwa, Hiroyasu, Hobara, Hiroaki, Hashizume, Satoru, Nakajima, Kanako, Takayanagi, Naoto, Ueda, Tomoya, Niki, Yoshifumi, Mochimaru, Masaaki, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Bagnara, Sebastiano, editor, Tartaglia, Riccardo, editor, Albolino, Sara, editor, Alexander, Thomas, editor, and Fujita, Yushi, editor

Published
2019
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12. Development of laser speckle blood flowmeter for evaluating the physiological function of skin

Author

Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Department of Physics and Information Technology, Kyushu Institute of Technology, Fukuoka, 820-8502, Japan, Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Department of Physics and Information Technology, Kyushu Institute of Technology, Fukuoka, 820-8502, Japan, Nagashima, Yoshinao, Ohsugi, Yuko, Hiraishi, Makiko, Niki, Yoshifumi, Fuji, Akira, Majima, Masataka, Okamoto, Takashi, Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Department of Physics and Information Technology, Kyushu Institute of Technology, Fukuoka, 820-8502, Japan, Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Personal Health Care Products Research Laboratories, Kao Corporation, Tokyo, 131-8501, Japan, Department of Pharmacology, Kitasato University School of Medicine, Kanagawa, 252-0374, Japan, Department of Physics and Information Technology, Kyushu Institute of Technology, Fukuoka, 820-8502, Japan, Nagashima, Yoshinao, Ohsugi, Yuko, Hiraishi, Makiko, Niki, Yoshifumi, Fuji, Akira, Majima, Masataka, and Okamoto, Takashi

Abstract

type:Journal Article, Objective: We developed and demonstrated laser speckle flowgraphy (LSFG) for two-dimensional (2D) skin blood flow (SBF) measurements to facilitate the noninvasive comparisons of SBF between individuals. Approach: By using morphing technology with a face mesh to compare SBF spatial distributions among individuals, we examined the practicability of SBF measurement with LSFG. Main results: (1) The uniformity of SBF measurement was demonstrated by examinations at different distances and angles for healthy subjects. (2) Mean blur rate (MBR)—a blood flow index of LSFG—exhibited significant correlation with the thermal diffusion method (TDM)—an established blood flow measurement method—suggesting that MBR is an effective index of SBF. (3) Blowout time, the half-width duration/duration of one cardiac cycle, exhibited significant negative correlation with age and positive correlation with stratum corneum hydration. Significance: These results suggest that LSFG is useful for evaluating SBF-related skin properties, and it has significant potential in medicine and cosmetology.

Published
2020

22. Evaluation of toe function based on the plantar pressure distribution while walking and its relationships with general gait parameters.

Author

Imaizumi K, Iwakami Y, Kumamoto M, Tomisaki M, Sudo M, and Niki Y

Subjects
Adult, Aged, Aged, 80 and over, Biomechanical Phenomena, Data Interpretation, Statistical, Female, Foot, Human Body, Humans, Male, Middle Aged, Pressure, Young Adult, Gait, Toes, Walking
Abstract

The foot is an important part of the human body that helps to maintain and shift a person's center of gravity. The roles of the toes in balancing and walking have been the focus of recent research. However, there are few methods or systems that can be used to quantitatively evaluate toe function while walking with respect to aging. Therefore, the purpose of this study is to develop an evaluation method for toe function based on the plantar pressure distribution while walking and evaluate how it relates to general gait parameters. Herein, we propose a method to identify the boundary position between the toe and foot based on the foot pressure distribution matrix. This technique was applied to gait analysis for 1774 female and 1553 male participants aged 20-90 years. The results of the statistical analysis suggest that the toe area ratio may reflect gait function and aging.

Published
2019
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