CLC number: TP206.1; R318.11
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 0000-00-00
Cited: 3
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XIN Shang-zhi, HU Sijung, CRABTREE Vincent P., ZHENG Jia, AZORIN-PERIS Vincent, ECHIADIS Angelos, SMITH Peter R.. Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height[J]. Journal of Zhejiang University Science A, 2007, 8(6): 916-920.
@article{title="Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height",
author="XIN Shang-zhi, HU Sijung, CRABTREE Vincent P., ZHENG Jia, AZORIN-PERIS Vincent, ECHIADIS Angelos, SMITH Peter R.",
journal="Journal of Zhejiang University Science A",
volume="8",
number="6",
pages="916-920",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A0916"
}
%0 Journal Article
%T Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height
%A XIN Shang-zhi
%A HU Sijung
%A CRABTREE Vincent P.
%A ZHENG Jia
%A AZORIN-PERIS Vincent
%A ECHIADIS Angelos
%A SMITH Peter R.
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 6
%P 916-920
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A0916
TY - JOUR
T1 - Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height
A1 - XIN Shang-zhi
A1 - HU Sijung
A1 - CRABTREE Vincent P.
A1 - ZHENG Jia
A1 - AZORIN-PERIS Vincent
A1 - ECHIADIS Angelos
A1 - SMITH Peter R.
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 6
SP - 916
EP - 920
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A0916
Abstract: Objective: To study the regulation of blood pulse volume via photoplethysmography (PPG) signal detected from toe, while the lower limb is passively raised in different height positions. Methods: Use a modified non-invasive PPG technique to detect the blood pulse signal on toe with infrared (IR) photo sensor. A protocol consisting of two postures, i.e., supine and 45° reclining, was designed to conduct laboratory trial in this study. During the period of performing the protocol of these postures, the lower limb was passively raised from the heights of 10 cm to 60 cm randomly and individually with sponge blocks underneath the foot. Results: In the supine posture, the higher the foot was passively raised, the more the blood PPG signal decreased. In the 45° reclining posture, the blood PPG signal increased at the beginning and then decreased in the foot height position from 10 cm to 60 cm. In both postures the normalized AC signal changes significantly while the normalized DC signal changes little. Conclusion: The toe PPG signals can obviously indicate the regulated blood volume change with the designated postural procedures due to the heart level position.
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