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Anthropometric and Body Composition Changes After Bariatric Surgery—The Effect of Sex, Age, and Type of Surgery

2025-04-22Journal article Open access
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datacite.subject.fosCiências Médicas::Ciências da Saúde
datacite.subject.sdg03:Saúde de Qualidade
dc.contributor.authorGuerra, Rita Soares
dc.contributor.authorPinho-Reis, Cíntia
dc.contributor.authorSousa, Ana Sofia
dc.contributor.authorMendes, Joana
dc.contributor.authorSilva, Cláudia
dc.date.accessioned2025-09-29T15:34:26Z
dc.date.available2025-09-29T15:34:26Z
dc.date.issued2025-04-22
dc.descriptionThe authors would like to thank Fundação Fernando Pessoa for the support in conducting this research.
dc.descriptionArticle number - 28
dc.description.abstractThe rise in obesity and its associated health problems increases the need for therapeutic approaches such as bariatric surgery. Therefore, this study aims to explore the changes in the anthropometric and body composition characteristics of patients undergoing bariatric surgery. A retrospective longitudinal study was conducted in subjects ≥ 18 y who underwent bariatric surgery and attended one nutrition appointment before and after surgery. Information on their sex, age, weight, fat mass (kg and %), fat-free mass (kg and %), and skeletal muscle mass, obtained using bioelectrical impedance, and on their waist circumferences was collected. Their BMIs and skeletal muscle mass indexes were calculated. The differences in the anthropometric and body composition parameters between pre- and post-surgery were also calculated. The participants were grouped by sex, age groups (18–44 y and 45–69), and type of surgery (Roux-en-Y gastric bypass and gastric sleeve). The variables are presented as n (%) and as means (SDs) or medians (interquartile ranges). Student’s t-test and the Mann–Whitney test were employed (p < 0.05). The sample consisted of 57 subjects (aged 18–69 years; 75% women). Between the pre- and post-surgical periods (63 (42) days), their weight (mean: 103.0 (SD: 16.3) kg vs. 91.2 (14.2) kg, p < 0.001); BMIs (37.9 (4.2) kg/m2 vs. 33.6 (4.1) kg/m2, p < 0.001); waist circumferences (116.2 (12.4) cm vs. 105.7 (12.3) cm, p < 0.001); % fat mass (45.5 (6.0) vs. 41.0 (8.0), p < 0.001); skeletal muscle mass (32.8 (7.4) kg vs. 30.3 (6.5) kg, p < 0.001); and skeletal muscle mass indexes (12.0 (1.8) kg/m2 vs. 11.1 (1.7) kg/m2, p < 0.001) decreased; meanwhile, their % fat-free mass increased (54.7 (6.0) vs. 59.0 (8.0), p < 0.001). Most of these changes occurred regardless of sex, age, or type of surgery. Shortly after bariatric surgery, patients show a better nutritional status and body composition.eng
dc.description.sponsorshipThe authors would like to thank Funda\u00E7\u00E3o Fernando Pessoa for the support in conducting this research.
dc.identifier.citationGuerra, R.S.; Pinho-Reis, C.; Sousa, A.S.; Mendes, J.; Silva, C. Anthropometric and Body Composition Changes After Bariatric Surgery—The Effect of Sex, Age, and Type of Surgery. Obesities 2025, 5, 28. https://doi.org/10.3390/obesities5020028
dc.identifier.doi10.3390/obesities5020028
dc.identifier.eissn2673-4168
dc.identifier.urihttp://hdl.handle.net/10400.8/14148
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.hasversionhttps://www.mdpi.com/2673-4168/5/2/28
dc.relation.ispartofObesities
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectweight
dc.subjectbody mass index
dc.subjectwaist circumference
dc.subjectfat mass
dc.subjectfat-free mass
dc.subjectskeletal muscle mass
dc.subjectgastric sleeve
dc.subjectRoux-en-Y gastric bypass
dc.titleAnthropometric and Body Composition Changes After Bariatric Surgery—The Effect of Sex, Age, and Type of Surgeryeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.titleObesities
oaire.citation.volume5
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameSousa
person.givenNameAna Sofia
person.identifier.orcid0000-0001-6093-0208
person.identifier.scopus-author-id56425114300
relation.isAuthorOfPublication14bcf366-27a2-47e1-94b3-029ac13a5732
relation.isAuthorOfPublication.latestForDiscovery14bcf366-27a2-47e1-94b3-029ac13a5732

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