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Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children

Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children
Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children
Background/Objectives: Few equations for calculating body-fat percentage (BF%) from field methods have been developed in South-Asian children. The objective of this study was to assess agreement between BF% derived from primary reference methods and that from skinfold equations and bio-impedance analysis (BIA) in Indian children.

Subjects/Methods: We measured BF% in two groups of Indian children. In Pune, 570 rural children aged 6–8 years underwent dual-energy X-ray absorptiometry (DXA) scans. In Mysore 18O in doubly labeled water was administered to 59 urban children aged 7–9 years. We conducted BIA at 50?kHz and anthropometry, including sub-scapular and triceps skinfold thicknesses. We used the published equations of Wickramasinghe, Shaikh, Slaughter and Dezenburg to calculate BF% from anthropometric data and the manufacturer's equation for BIA measurements. We assessed agreement with values derived from DXA and doubly labeled water using Bland–Altman analysis.

Results: Children were light and thin on average compared with international standards. There was poor agreement between the reference BF% values and those from all equations. Assumptions for Bland–Altman analysis were not met for Wickramasinghe, Shaikh and Slaughter equations. The Dezenberg equations under-predicted BF% for most children (mean difference in Pune ?13.4, LOA ?22.7, ?4.0 and in Mysore ?7.9, LOA (?13.7 and ?2.2). The mean bias for the BIA equation in Pune was +5.0% and in Mysore +1.95%, and the limits of agreement were wide; ?5.0, 15.0 and –7.8, 11.7 respectively.

Conclusions: Currently available skinfold equations do not accurately predict BF% in Indian children. We recommend development of BIA equations in this population using a four-compartment model.
0954-3007
Kehoe, S.H.
534e5729-632b-4b4f-8401-164d8c20aa26
Krishnaveni, G.V.
e9cc468a-8262-4dde-8eba-e047c68a3dce
Lubree, H.G.
feeeecc7-471f-4e4e-8431-aabde4888f2e
Wills, A.K.
a49cf0bc-8fe1-4672-8ff2-da46760d2059
Guntupalli, A.M.
e41fb072-c8a9-461f-9b49-73fb41739ac2
Veena, S.R.
2acd1a9f-ce06-4cd2-bbdb-8f0057308e0e
Bhat, D.S.
75412cda-4b68-4286-82e2-8f9ea39fd842
Kishore, R.
e048b017-3dec-488c-be7b-77c26546124c
Fall, C.H.D.
7171a105-34f5-4131-89d7-1aa639893b18
Yajnik, C.S.
ea0648f2-b384-4e5c-9e0f-45cc852e0c75
Kurpad, A.
8bdeaac6-0b0f-4e83-a7fb-2cdd43675c36
Kehoe, S.H.
534e5729-632b-4b4f-8401-164d8c20aa26
Krishnaveni, G.V.
e9cc468a-8262-4dde-8eba-e047c68a3dce
Lubree, H.G.
feeeecc7-471f-4e4e-8431-aabde4888f2e
Wills, A.K.
a49cf0bc-8fe1-4672-8ff2-da46760d2059
Guntupalli, A.M.
e41fb072-c8a9-461f-9b49-73fb41739ac2
Veena, S.R.
2acd1a9f-ce06-4cd2-bbdb-8f0057308e0e
Bhat, D.S.
75412cda-4b68-4286-82e2-8f9ea39fd842
Kishore, R.
e048b017-3dec-488c-be7b-77c26546124c
Fall, C.H.D.
7171a105-34f5-4131-89d7-1aa639893b18
Yajnik, C.S.
ea0648f2-b384-4e5c-9e0f-45cc852e0c75
Kurpad, A.
8bdeaac6-0b0f-4e83-a7fb-2cdd43675c36

Kehoe, S.H., Krishnaveni, G.V., Lubree, H.G., Wills, A.K., Guntupalli, A.M., Veena, S.R., Bhat, D.S., Kishore, R., Fall, C.H.D., Yajnik, C.S. and Kurpad, A. (2011) Prediction of body-fat percentage from skinfold and bio-impedance measurements in Indian school children. European Journal of Clinical Nutrition. (doi:10.1038/ejcn.2011.119).

Record type: Article

Abstract

Background/Objectives: Few equations for calculating body-fat percentage (BF%) from field methods have been developed in South-Asian children. The objective of this study was to assess agreement between BF% derived from primary reference methods and that from skinfold equations and bio-impedance analysis (BIA) in Indian children.

Subjects/Methods: We measured BF% in two groups of Indian children. In Pune, 570 rural children aged 6–8 years underwent dual-energy X-ray absorptiometry (DXA) scans. In Mysore 18O in doubly labeled water was administered to 59 urban children aged 7–9 years. We conducted BIA at 50?kHz and anthropometry, including sub-scapular and triceps skinfold thicknesses. We used the published equations of Wickramasinghe, Shaikh, Slaughter and Dezenburg to calculate BF% from anthropometric data and the manufacturer's equation for BIA measurements. We assessed agreement with values derived from DXA and doubly labeled water using Bland–Altman analysis.

Results: Children were light and thin on average compared with international standards. There was poor agreement between the reference BF% values and those from all equations. Assumptions for Bland–Altman analysis were not met for Wickramasinghe, Shaikh and Slaughter equations. The Dezenberg equations under-predicted BF% for most children (mean difference in Pune ?13.4, LOA ?22.7, ?4.0 and in Mysore ?7.9, LOA (?13.7 and ?2.2). The mean bias for the BIA equation in Pune was +5.0% and in Mysore +1.95%, and the limits of agreement were wide; ?5.0, 15.0 and –7.8, 11.7 respectively.

Conclusions: Currently available skinfold equations do not accurately predict BF% in Indian children. We recommend development of BIA equations in this population using a four-compartment model.

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Published date: 6 July 2011

Identifiers

Local EPrints ID: 194165
URI: http://eprints.soton.ac.uk/id/eprint/194165
ISSN: 0954-3007
PURE UUID: d7da4bff-32a2-451d-a32e-8b9d4102d782
ORCID for S.H. Kehoe: ORCID iD orcid.org/0000-0003-2584-7999
ORCID for C.H.D. Fall: ORCID iD orcid.org/0000-0003-4402-5552

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Date deposited: 25 Jul 2011 15:38
Last modified: 15 Mar 2024 03:02

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Contributors

Author: S.H. Kehoe ORCID iD
Author: G.V. Krishnaveni
Author: H.G. Lubree
Author: A.K. Wills
Author: A.M. Guntupalli
Author: S.R. Veena
Author: D.S. Bhat
Author: R. Kishore
Author: C.H.D. Fall ORCID iD
Author: C.S. Yajnik
Author: A. Kurpad

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