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A portable band-shaped bioimpedance system to monitor the body fat and fasting glucose level

Luong Duong Trong

Luong Duong Trong

School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
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Duong Trong, Luong
, 
Linh Nguyen Quang

Linh Nguyen Quang

School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
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Nguyen Quang, Linh
, 
Duc Hoang Anh

Duc Hoang Anh

School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
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Hoang Anh, Duc
, 
Diep Dang Tuan

Diep Dang Tuan

School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
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Dang Tuan, Diep
, 
Hieu Nguyen Chi

Hieu Nguyen Chi

School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
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Nguyen Chi, Hieu
 and 
Duc Nguyen Minh

Duc Nguyen Minh

  • School of Electrical and Electronics Engineering, Hanoi University of Science and TechnologyHanoi, Vietnam
  • School of Biomedical Engineering, University of SydneyNSW, Australia
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Nguyen Minh, Duc
  
Nov 04, 2022
A portable band-shaped bioimpedance system to monitor the body fat and fasting glucose level's Cover Image
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Published Online: Nov 04, 2022
Page range: 54 - 65
Received: Jul 29, 2022
DOI: https://doi.org/10.2478/joeb-2022-0009
Keywords
© 2022 Luong Duong Trong, Linh Nguyen Quang, Duc Hoang Anh, Diep Dang Tuan, Hieu Nguyen Chi and Duc Nguyen Minh, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Fig. 1

The overall architecture of the system.
The overall architecture of the system.

Fig. 2

The band prototype of 150mm x 40mm in dimension and the distances between.
The band prototype of 150mm x 40mm in dimension and the distances between.

Fig. 3

The schematic of the current source and voltage recording on the band
The schematic of the current source and voltage recording on the band

Fig. 4

Flowchart of the signal processing
Flowchart of the signal processing

Fig. 5

Four locations were picked for the local impedance measurement: on the upper arm under the triceps, on the side of the belly, on the side of the back and on the thigh under the bicep femoris
Four locations were picked for the local impedance measurement: on the upper arm under the triceps, on the side of the belly, on the side of the back and on the thigh under the bicep femoris

Fig. 6

Results between the impedance measured by the band and the standard resistors
Results between the impedance measured by the band and the standard resistors

Fig. 7

Local impedance versus body fat at 4 locations: A) upper arm, B) belly, C) back, and D) thigh.
Local impedance versus body fat at 4 locations: A) upper arm, B) belly, C) back, and D) thigh.

Fig. 8

Local impedance versus fasting glucose level at 4 locations: A) upper arm, B) belly, C) back, and D) thigh.
Local impedance versus fasting glucose level at 4 locations: A) upper arm, B) belly, C) back, and D) thigh.

The information of volunteers in the experiment including age, BME, body fat (%) and fasting glucose

Age BMI Body fat (%) Fasting glucose (mmol/l)
mean ± 31.9 ± 22.1 ± 20.7 ± 6.9 7.4 ±
std 6.6 3.5 1.8
min 18 17.3 6.2 4.9
max 44 27.6 33.1 10.9

Correlation coefficients and the corresponding confidence intervals (95%) between the local impedances measured at 4 locations: the upper arm, the belly, the back and the thigh, and the two parameters: the body fat and fasting glucose of all 21 volunteers_ The best results are highlighted in boldness and red_ Abbreviation: Cor_ Coef: correlation coefficient_ CI: confidence interval (95%)

Arm Belly Back Thigh
Cor. Coef.* CI** Cor. Coef.* CI** Cor. Coef.* CI** Cor. Coef.* CI**
Body fat 0.89 0.73-0.95 0.69 0.36-0.86 0.51 0.09-0.77 0.57 0.13-0.82
Fasting Glucose 0.42 -0.02-0.72 0.32 -0.14-0.65 0.14 -0.31-0.54 0.92 0.81-0.97
Language:
English
Publication timeframe:
1 times per year
Journal Subjects:
Engineering, Bioengineering and Biomedical Engineering, Biomedical Electronics, Life Sciences, Biophysics, Medicine, Biomedical Engineering, Physics, Spectroscopy and Metrology
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