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Gobbo LA, Langer RD, Marini E, Buffa R, Borges JH, Pascoa MA, Cirolini VX, Guerra-Júnior G, Gonçalves EM. Effect of Physical Training on Body Composition in Brazilian Military. Int J Environ Res Public Health 2022; 19:ijerph19031732. [PMID: 35162755 PMCID: PMC8834877 DOI: 10.3390/ijerph19031732] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 01/10/2023]
Abstract
The military are selected on the basis of physical standards and are regularly involved in strong physical activities, also related to particular sports training. The aims of the study were to analyze the effect of a 7-month military training program on body composition variables and the suitability of specific ‘bioelectrical impedance vector analysis’ (spBIVA), compared to DXA, to detect the changes in body composition. A sample of 270 male Brazilian cadets (19.1 ± 1.1 years), composed of a group practicing military physical training routine only (MT = 155) and a group involved in a specific sport training (SMT = 115), were measured by body composition assessments (evaluated by means of DXA and spBIVA) at the beginning and the end of the military routine year. The effect of training on body composition was similar in SMT and MT groups, with an increase in LST. DXA and spBIVA were correlated, with specific resistance (Rsp) and reactance (Xcsp) positively related to fat mass (FM), FM%, LST, and lean soft tissue index (LSTI), and phase angle positively related to LST and LSTI. Body composition variations due to physical training were recognized by spBIVA: the increase in muscle mass was indicated by the phase angle and Xcsp increase, and the stability of FM% was consistent with the unchanged values of Rsp. Military training produced an increase in muscle mass, but no change in FM%, independently of the sample characteristics at baseline and the practice of additional sports. SpBIVA is a suitable technique for the assessment of body composition in military people.
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Affiliation(s)
- Luis Alberto Gobbo
- Skeletal Muscle Assessment Laboratory (LABSIM), School of Technology and Science, São Paulo State University (UNESP), Presidente Prudente 19060-900, SP, Brazil;
| | - Raquel David Langer
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
| | - Elisabetta Marini
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Italy;
- Correspondence: ; Tel.: +39-070-675-6607
| | - Roberto Buffa
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Italy;
| | - Juliano Henrique Borges
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
| | - Mauro A. Pascoa
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
| | - Vagner X. Cirolini
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
| | - Gil Guerra-Júnior
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
| | - Ezequiel Moreira Gonçalves
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (R.D.L.); (J.H.B.); (M.A.P.); (V.X.C.); (G.G.-J.); (E.M.G.)
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Langer RD, Borges JH, Pascoa MA, Cirolini VX, Guerra-Júnior G, Gonçalves EM. Validity of Bioelectrical Impedance Analysis to Estimation Fat-Free Mass in the Army Cadets. Nutrients 2016; 8:121. [PMID: 26978397 PMCID: PMC4808851 DOI: 10.3390/nu8030121] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/28/2016] [Accepted: 02/17/2016] [Indexed: 01/10/2023] Open
Abstract
Background: Bioelectrical Impedance Analysis (BIA) is a fast, practical, non-invasive, and frequently used method for fat-free mass (FFM) estimation. The aims of this study were to validate predictive equations of BIA to FFM estimation in Army cadets and to develop and validate a specific BIA equation for this population. Methods: A total of 396 males, Brazilian Army cadets, aged 17–24 years were included. The study used eight published predictive BIA equations, a specific equation in FFM estimation, and dual-energy X-ray absorptiometry (DXA) as a reference method. Student’s t-test (for paired sample), linear regression analysis, and Bland–Altman method were used to test the validity of the BIA equations. Results: Predictive BIA equations showed significant differences in FFM compared to DXA (p < 0.05) and large limits of agreement by Bland–Altman. Predictive BIA equations explained 68% to 88% of FFM variance. Specific BIA equations showed no significant differences in FFM, compared to DXA values. Conclusion: Published BIA predictive equations showed poor accuracy in this sample. The specific BIA equations, developed in this study, demonstrated validity for this sample, although should be used with caution in samples with a large range of FFM.
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Affiliation(s)
- Raquel D Langer
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
| | - Juliano H Borges
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
| | - Mauro A Pascoa
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
| | - Vagner X Cirolini
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
| | - Gil Guerra-Júnior
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
| | - Ezequiel M Gonçalves
- Growth and Development Laboratory, Center for Investigation in Pediatrics (CIPED), School of Medical Sciences, University of Campinas (UNICAMP), Campinas-SP 13083-887, Brazil.
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