Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order
The passive electrical properties of a biological tissue, referred to as the tissue bioimpedance, are related to the underlying tissue physiology. These measurements are often well-represented by a fractional-order equivalent circuit model, referred to as the Cole-impedance model. Objective: Identif...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Fractal and Fractional |
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| Online Access: | https://www.mdpi.com/2504-3110/5/1/13 |
| _version_ | 1797406554197065728 |
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| author | Todd J. Freeborn Shelby Critcher |
| author_facet | Todd J. Freeborn Shelby Critcher |
| author_sort | Todd J. Freeborn |
| collection | DOAJ |
| description | The passive electrical properties of a biological tissue, referred to as the tissue bioimpedance, are related to the underlying tissue physiology. These measurements are often well-represented by a fractional-order equivalent circuit model, referred to as the Cole-impedance model. Objective: Identify if there are differences in the fractional-order (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) of the Cole-impedance parameters that represent the segmental right-body, right-arm, and right-leg of adult participants. Hypothesis: Cole-impedance model parameters often associated with tissue geometry and fluid (<inline-formula><math display="inline"><semantics><msub><mi>R</mi><mo>∞</mo></msub></semantics></math></inline-formula>, <inline-formula><math display="inline"><semantics><msub><mi>R</mi><mn>1</mn></msub></semantics></math></inline-formula>, <i>C</i>) will be different between body segments, but parameters often associated with tissue type (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) will not show any statistical differences. Approach: A secondary analysis was applied to a dataset collected for an agreement study between bioimpedance spectroscopy devices and dual-energy X-ray absoptiometry, identifying the Cole-model parameters of the right-side body segments of <inline-formula><math display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>174</mn></mrow></semantics></math></inline-formula> participants using a particle swarm optimization approach. Statistical testing was applied to the different groups of Cole-model parameters to evaluate group differences and correlations of parameters with tissue features. Results: All Cole-impedance model parameters showed statistically significant differences between body segments. Significance: The physiological or geometric features of biological tissues that are linked with the fractional-order (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) of data represented by the Cole-impedance model requires further study to elucidate. |
| first_indexed | 2024-03-09T03:28:06Z |
| format | Article |
| id | doaj.art-215d74791d5c4318bdf522c861a96a7f |
| institution | Directory Open Access Journal |
| issn | 2504-3110 |
| language | English |
| last_indexed | 2024-03-09T03:28:06Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fractal and Fractional |
| spelling | doaj.art-215d74791d5c4318bdf522c861a96a7f2023-12-03T14:59:41ZengMDPI AGFractal and Fractional2504-31102021-01-01511310.3390/fractalfract5010013Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-OrderTodd J. Freeborn0Shelby Critcher1Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USADepartment of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USAThe passive electrical properties of a biological tissue, referred to as the tissue bioimpedance, are related to the underlying tissue physiology. These measurements are often well-represented by a fractional-order equivalent circuit model, referred to as the Cole-impedance model. Objective: Identify if there are differences in the fractional-order (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) of the Cole-impedance parameters that represent the segmental right-body, right-arm, and right-leg of adult participants. Hypothesis: Cole-impedance model parameters often associated with tissue geometry and fluid (<inline-formula><math display="inline"><semantics><msub><mi>R</mi><mo>∞</mo></msub></semantics></math></inline-formula>, <inline-formula><math display="inline"><semantics><msub><mi>R</mi><mn>1</mn></msub></semantics></math></inline-formula>, <i>C</i>) will be different between body segments, but parameters often associated with tissue type (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) will not show any statistical differences. Approach: A secondary analysis was applied to a dataset collected for an agreement study between bioimpedance spectroscopy devices and dual-energy X-ray absoptiometry, identifying the Cole-model parameters of the right-side body segments of <inline-formula><math display="inline"><semantics><mrow><mi>N</mi><mo>=</mo><mn>174</mn></mrow></semantics></math></inline-formula> participants using a particle swarm optimization approach. Statistical testing was applied to the different groups of Cole-model parameters to evaluate group differences and correlations of parameters with tissue features. Results: All Cole-impedance model parameters showed statistically significant differences between body segments. Significance: The physiological or geometric features of biological tissues that are linked with the fractional-order (<inline-formula><math display="inline"><semantics><mi>α</mi></semantics></math></inline-formula>) of data represented by the Cole-impedance model requires further study to elucidate.https://www.mdpi.com/2504-3110/5/1/13electrical impedancebioimpedanceCole impedance modelfractional-order equivalent circuitfractional-ordersegmental impedance |
| spellingShingle | Todd J. Freeborn Shelby Critcher Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order Fractal and Fractional electrical impedance bioimpedance Cole impedance model fractional-order equivalent circuit fractional-order segmental impedance |
| title | Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order |
| title_full | Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order |
| title_fullStr | Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order |
| title_full_unstemmed | Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order |
| title_short | Cole-Impedance Model Representations of Right-Side Segmental Arm, Leg, and Full-Body Bioimpedances of Healthy Adults: Comparison of Fractional-Order |
| title_sort | cole impedance model representations of right side segmental arm leg and full body bioimpedances of healthy adults comparison of fractional order |
| topic | electrical impedance bioimpedance Cole impedance model fractional-order equivalent circuit fractional-order segmental impedance |
| url | https://www.mdpi.com/2504-3110/5/1/13 |
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