Home // ACHI 2024, The Seventeenth International Conference on Advances in Computer-Human Interactions // View article

Surface Skin Blood Flow Dynamics during Muscle Contraction Using Filtered Camera

Authors:
Naoki Yamamoto
Naoaki Itakura
Tota Mizuno
Miku Shimizu
Kazuyuki Mito

Keywords: Real image, muscle, Filter, Blood Flow.

Abstract:
The purpose of this study is to elucidate the surface skin blood flow dynamics during muscle contraction using real images with filters that pass near-infrared wavelengths. It has been shown that the depth of transmission differs depending on the RGB color components. In the previous study, it was suggested that the blood flow state obtained from the R-B component value, which is the difference between the deepest R component value and the shallowest B component value, may be used as one of the evaluation indices of muscle activity. However, the use of the near-infrared light component, which has a deeper penetration depth into the subcutaneous region than the RGB light component, has not yet been examined in this method. The near-infrared light component has a possibility to measure the blood flow state inside the subcutaneous tissue with high accuracy, because the light penetrates deeper into the subcutaneous tissue than the RGB light component. Therefore, in addition to the RGB light components used in the conventional method, a visible light camera equipped with a filter that transmits wavelengths above the near-infrared light component is used. In the experiment, a load equivalent to 40% of Maximum Voluntary Contraction (MVC) was applied to the subject's upper arm. The subjects were kept in a resting state, and then the load was applied to their arms and they were kept in a resting state again. As a result, the R component values with the filter showed a larger change than the R-B component values without the filter when the load was applied. This result indicates that the R-B component with filter can capture the changes in blood flow more easily than the conventional method.

Pages: 121 to 122

Copyright: Copyright (c) IARIA, 2024

Publication date: May 26, 2024

Published in: conference

ISSN: 2308-4138

ISBN: 978-1-68558-163-3

Location: Barcelona, Spain

Dates: from May 26, 2024 to May 30, 2024