Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes
Background: specific bioelectrical impedance vector analysis (BIVA) has been proposed as an alternative bioimpedance method for evaluating body composition. This investigation aimed to verify the ability of specific BIVA in identifying changes in fat mass after a 16-week lifestyle program in former...
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MDPI AG
2021-06-01
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| Series: | Biology |
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| Online Access: | https://www.mdpi.com/2079-7737/10/6/524 |
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| author | Francesco Campa Catarina Nunes Matias Catarina L. Nunes Cristina P. Monteiro Rubén Francisco Filipe Jesus Elisabetta Marini Luís B. Sardinha Paulo Martins Cláudia Minderico Analiza M. Silva |
| author_facet | Francesco Campa Catarina Nunes Matias Catarina L. Nunes Cristina P. Monteiro Rubén Francisco Filipe Jesus Elisabetta Marini Luís B. Sardinha Paulo Martins Cláudia Minderico Analiza M. Silva |
| author_sort | Francesco Campa |
| collection | DOAJ |
| description | Background: specific bioelectrical impedance vector analysis (BIVA) has been proposed as an alternative bioimpedance method for evaluating body composition. This investigation aimed to verify the ability of specific BIVA in identifying changes in fat mass after a 16-week lifestyle program in former athletes. Methods: The 94 participants included in the Champ4life project (clinicaltrials.gov: NCT03031951) were randomized into intervention (<i>n</i> = 49) and control (<i>n</i> = 45) groups, from which 82 athletes completed the intervention (age 43.9 ± 9.2 y; body mass index 31.1 ± 4.6 kg/m<sup>2</sup>). Fat mass was estimated by dual-energy X-ray absorptiometry. Bioelectric resistance, reactance, phase angle, and vector length were assessed by bioelectric impedance spectroscopy, and the BIVA procedure was applied. Results: A significant (<i>p</i> < 0.05) group x time interaction for fat mass, specific resistance, reactance, and vector length was found. Fat mass and vector length significantly (<i>p</i> < 0.05) decreased in the intervention group, while no change was measured in the control group. Considering the participants as a whole group, changes in vector length were associated with changes in fat mass percentage (r<sup>2</sup> = 0.246; β = 0.33; <i>p</i> < 0.001) even after adjusting for age, sex, and group (R<sup>2</sup> = 0.373; β = 0.23; <i>p</i> = 0.002). Conclusions: The specific BIVA approach is suitable to track fat mass changes during an intervention program aimed to reduce body fat in former athletes. |
| first_indexed | 2024-03-10T10:28:46Z |
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| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-10T10:28:46Z |
| publishDate | 2021-06-01 |
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| series | Biology |
| spelling | doaj.art-e5d0f44548c44b9499ed8890342bbf052023-11-21T23:50:32ZengMDPI AGBiology2079-77372021-06-0110652410.3390/biology10060524Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite AthletesFrancesco Campa0Catarina Nunes Matias1Catarina L. Nunes2Cristina P. Monteiro3Rubén Francisco4Filipe Jesus5Elisabetta Marini6Luís B. Sardinha7Paulo Martins8Cláudia Minderico9Analiza M. Silva10Department for Life Quality Studies, Università degli Studi di Bologna, 47921 Rimini, ItalyBioperformance & Nutrition Research Unit, Bettery S.A., 2740-262 Lisbon, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalLaboratory of Physiology and Biochemistry of Exercise, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002 Cruz Quebrada, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalDepartment of Life and Environmental Sciences, Neuroscience and Anthropology Section, University of Cagliari, 09124 Cagliari, ItalyExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalExercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Cruz Quebrada, PortugalBackground: specific bioelectrical impedance vector analysis (BIVA) has been proposed as an alternative bioimpedance method for evaluating body composition. This investigation aimed to verify the ability of specific BIVA in identifying changes in fat mass after a 16-week lifestyle program in former athletes. Methods: The 94 participants included in the Champ4life project (clinicaltrials.gov: NCT03031951) were randomized into intervention (<i>n</i> = 49) and control (<i>n</i> = 45) groups, from which 82 athletes completed the intervention (age 43.9 ± 9.2 y; body mass index 31.1 ± 4.6 kg/m<sup>2</sup>). Fat mass was estimated by dual-energy X-ray absorptiometry. Bioelectric resistance, reactance, phase angle, and vector length were assessed by bioelectric impedance spectroscopy, and the BIVA procedure was applied. Results: A significant (<i>p</i> < 0.05) group x time interaction for fat mass, specific resistance, reactance, and vector length was found. Fat mass and vector length significantly (<i>p</i> < 0.05) decreased in the intervention group, while no change was measured in the control group. Considering the participants as a whole group, changes in vector length were associated with changes in fat mass percentage (r<sup>2</sup> = 0.246; β = 0.33; <i>p</i> < 0.001) even after adjusting for age, sex, and group (R<sup>2</sup> = 0.373; β = 0.23; <i>p</i> = 0.002). Conclusions: The specific BIVA approach is suitable to track fat mass changes during an intervention program aimed to reduce body fat in former athletes.https://www.mdpi.com/2079-7737/10/6/524body compositionBIVAfat massweight loss |
| spellingShingle | Francesco Campa Catarina Nunes Matias Catarina L. Nunes Cristina P. Monteiro Rubén Francisco Filipe Jesus Elisabetta Marini Luís B. Sardinha Paulo Martins Cláudia Minderico Analiza M. Silva Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes Biology body composition BIVA fat mass weight loss |
| title | Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes |
| title_full | Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes |
| title_fullStr | Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes |
| title_full_unstemmed | Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes |
| title_short | Specific Bioelectrical Impedance Vector Analysis Identifies Body Fat Reduction after a Lifestyle Intervention in Former Elite Athletes |
| title_sort | specific bioelectrical impedance vector analysis identifies body fat reduction after a lifestyle intervention in former elite athletes |
| topic | body composition BIVA fat mass weight loss |
| url | https://www.mdpi.com/2079-7737/10/6/524 |
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