Laser Beam Measurement of Abdominal Sagittal Diameter in Obese Children: a Validation Study

Overview

Journal Pediatr Obes

Specialties Endocrinology
Pediatrics

Date 2012 Sep 25

PMID 23002010

Citations 1

Authors

C E Flodmark

W Shen

M Punyanitya

P Leander

J Lanke

A Pietrobelli

Affiliations

Soon will be listed here.

Abstract

Objectives: Sagittal diameter (SAD) has been reported to correlate to visceral fat and cardiovascular risk factors. SAD is measured with the individual lying down, halfway between the lower rib margin and the iliac crest; it represents the mid-height of the abdomen. The aim of this study was to validate SAD measured using a recently-developed laser beam device (SAD(LDB) ) against SAD measured using MRI (SAD(MRI)).

Methods: Of 48 obese children (25 boys, 23 girls) aged 9-11 years on the waiting list for obesity treatment, 34 agreed to a baseline measurement, which was followed by repeated measurements 6 and 12 months later in 31 and 22 children respectively. MRI was used to examine SAD(MRI) at 5 cm above (SAD(MRI,cra) ) and below (SAD(MRI,cau)) the mid plane of the L4-5 intervertebral disc.

Results: Each of the differences SAD(LBD) - SAD(MRI, cau) and SAD(LBD) - SAD(MRI,cra) was subjected to a repeated-measurements ANOVA; the visit did not have a statistically significant effect in either case (p = 0.19 and p = 0.72, respectively). The difference SAD(LBD) - SAD(MRI, cau) was 1.50 on average (p < 0.0001; CI 1.26-1.74) while the corresponding figure for SAD(LBD) -SAD(MRI, cra) was 1.26 (p < 0.0001; CI 1.04-1.49). Regression of the difference on the mean gave slopes of -0.09 (p = 0.25) and -0.04 (p = 0.57) respectively. Prediction of SAD(MRI) from SAD(LDB) can be performed in different ways: by means of linear regression or by means of an additive correction.

Conclusions: Thus, this laser device can be used instead of MRI to estimate SAD by using a simple correction.

Citing Articles

Probiotics during weaning: a follow-up study on effects on body composition and metabolic markers at school age.

Karlsson Videhult F, Ohlund I, Stenlund H, Hernell O, West C Eur J Nutr. 2014; 54(3):355-63.

PMID: 24830782 DOI: 10.1007/s00394-014-0715-y.

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