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

Open Access
|Nov 2022

Figures & Tables

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

AgeBMIBody fat (%)Fasting glucose (mmol/l)
mean ±31.9 ±22.1 ±20.7 ± 6.97.4 ±
std6.63.5 1.8

min1817.36.24.9

max4427.633.110.9

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%)

ArmBellyBackThigh

Cor. Coef.*CI**Cor. Coef.*CI**Cor. Coef.*CI**Cor. Coef.*CI**
Body fat0.890.73-0.950.690.36-0.860.510.09-0.770.570.13-0.82

Fasting Glucose0.42-0.02-0.720.32-0.14-0.650.14-0.31-0.540.920.81-0.97
Language: English
Page range: 54 - 65
Submitted on: Jul 29, 2022
Published on: Nov 4, 2022
Published by: University of Oslo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year

© 2022 Luong Duong Trong, Linh Nguyen Quang, Duc Hoang Anh, Diep Dang Tuan, Hieu Nguyen Chi, Duc Nguyen Minh, published by University of Oslo
This work is licensed under the Creative Commons Attribution 4.0 License.