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Anthropometry, bioimpedance and densitometry: Comparative methods for lean mass body analysis in elderly outpatients from a tertiary hospital.
Exp Gerontol. 2020 Sep; 138:111020.EG

Abstract

OBJECTIVES

To evaluate lean mass index (LMI) measured by bioimpedance (BIA) and anthropometry compared to densitometry (DXA) in elderly outpatients from a tertiary care hospital.

METHODS

Participants were over 60-year-old men, presenting no dementia or disability, from a tertiary geriatric ambulatory. LMI obtained by BIA, anthropometry and DXA were submitted to Baumgartner, Janssen and Delmonico calculations respectively. Sarcopenia was calculated as LMI by DXA and handgrip strength. Data were analyzed by T student's test, ANOVA for repeated measures and pos hoc Bonferroni test, Pearson's correlation test, regression equation and Bland Altman analysis, ROC curve and contingency table 2 × 2 for sensitivity, specificity and predictive values.

RESULTS

A total of 92 participants completed the study. Most of them were married, aged 72.9 ± 6.6, lived a sedentary lifestyle, presented multiple morbidities, and in use of polypharmacy. Appendicular lean mass was lower in sarcopenic participants when compared to that in nonsarcopenic ones (20.2 kg/m2 and 23 kg/m2 respectively, p < 0.0001). BIA sensitivity, specificity and correlation to DXA were 37%, 98% and r = 0.81 (p < 0.001), and for anthropometry 67%, 92% and r = 0.77 (p < 0.0001) respectively. Bland Altman's analysis showed congruence between methods and DXA (anthropometry: bias = -0,05 ± 0,66, limits of agreement (LoA) = -1.37 and 1.26; BIA: bias = 2,2; LoA = 0,7 and 3,7).

CONCLUSION

Aging and multiple chronic and degenerative morbidities affect LM in vulnerable elderly patients. Both anthropometry and BIA, are accurate to measure LMI independently in this population but Anthropometry presented better agreement to DXA than Bioimpedance and has the advantage of lower price, easier application and cheaper equipment to be applied.

Authors+Show Affiliations

Division of Nutrition and Dietetics of Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil. Electronic address: maria.aquimara@hc.fm.usp.br.Geriatric Division of Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.Internal Medicine Department, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32653450

Citation

Zambone, Maria Aquimara, et al. "Anthropometry, Bioimpedance and Densitometry: Comparative Methods for Lean Mass Body Analysis in Elderly Outpatients From a Tertiary Hospital." Experimental Gerontology, vol. 138, 2020, p. 111020.
Zambone MA, Liberman S, Garcia MLB. Anthropometry, bioimpedance and densitometry: Comparative methods for lean mass body analysis in elderly outpatients from a tertiary hospital. Exp Gerontol. 2020;138:111020.
Zambone, M. A., Liberman, S., & Garcia, M. L. B. (2020). Anthropometry, bioimpedance and densitometry: Comparative methods for lean mass body analysis in elderly outpatients from a tertiary hospital. Experimental Gerontology, 138, 111020. https://doi.org/10.1016/j.exger.2020.111020
Zambone MA, Liberman S, Garcia MLB. Anthropometry, Bioimpedance and Densitometry: Comparative Methods for Lean Mass Body Analysis in Elderly Outpatients From a Tertiary Hospital. Exp Gerontol. 2020;138:111020. PubMed PMID: 32653450.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anthropometry, bioimpedance and densitometry: Comparative methods for lean mass body analysis in elderly outpatients from a tertiary hospital. AU - Zambone,Maria Aquimara, AU - Liberman,Sami, AU - Garcia,Maria Lucia Bueno, Y1 - 2020/07/09/ PY - 2019/10/07/received PY - 2020/07/01/revised PY - 2020/07/03/accepted PY - 2020/7/13/pubmed PY - 2020/7/13/medline PY - 2020/7/13/entrez KW - Anthropometry KW - Bioimpedance KW - Sarcopenia SP - 111020 EP - 111020 JF - Experimental gerontology JO - Exp. Gerontol. VL - 138 N2 - OBJECTIVES: To evaluate lean mass index (LMI) measured by bioimpedance (BIA) and anthropometry compared to densitometry (DXA) in elderly outpatients from a tertiary care hospital. METHODS: Participants were over 60-year-old men, presenting no dementia or disability, from a tertiary geriatric ambulatory. LMI obtained by BIA, anthropometry and DXA were submitted to Baumgartner, Janssen and Delmonico calculations respectively. Sarcopenia was calculated as LMI by DXA and handgrip strength. Data were analyzed by T student's test, ANOVA for repeated measures and pos hoc Bonferroni test, Pearson's correlation test, regression equation and Bland Altman analysis, ROC curve and contingency table 2 × 2 for sensitivity, specificity and predictive values. RESULTS: A total of 92 participants completed the study. Most of them were married, aged 72.9 ± 6.6, lived a sedentary lifestyle, presented multiple morbidities, and in use of polypharmacy. Appendicular lean mass was lower in sarcopenic participants when compared to that in nonsarcopenic ones (20.2 kg/m2 and 23 kg/m2 respectively, p < 0.0001). BIA sensitivity, specificity and correlation to DXA were 37%, 98% and r = 0.81 (p < 0.001), and for anthropometry 67%, 92% and r = 0.77 (p < 0.0001) respectively. Bland Altman's analysis showed congruence between methods and DXA (anthropometry: bias = -0,05 ± 0,66, limits of agreement (LoA) = -1.37 and 1.26; BIA: bias = 2,2; LoA = 0,7 and 3,7). CONCLUSION: Aging and multiple chronic and degenerative morbidities affect LM in vulnerable elderly patients. Both anthropometry and BIA, are accurate to measure LMI independently in this population but Anthropometry presented better agreement to DXA than Bioimpedance and has the advantage of lower price, easier application and cheaper equipment to be applied. SN - 1873-6815 UR - https://www.unboundmedicine.com/medline/citation/32653450/Anthropometry,_bioimpedance_and_densitometry:_Comparative_methods_for_lean_mass_body_analysis_in_elderly_outpatients_from_a_tertiary_hospital L2 - https://linkinghub.elsevier.com/retrieve/pii/S0531-5565(20)30368-5 DB - PRIME DP - Unbound Medicine ER -
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