Measuring Body Composition Using Bioelectrical Impedance Analysis (BIA) in Severely Obese Adolescents: Comparison of Estimated Fat Mass (FM) Using Different Equations

Foot-to-foot bioelectrical impedance analysis (BIA) is simple and non-invasive, making it particularly suitable for use in children. There is insufficient evidence of the validity of foot-to-foot BIA compared with dual-energy X-ray absorptiometry (DEXA) as the criterion method in healthy young children. Our objective was to assess the validity of foot-to-foot BIA against DEXA in a large cohort of healthy young children. Body composition was measured by foot-to-foot BIA and DEXA in 203 children (mean age 8·9 (sd0·3) years). Bland–Altman and simple linear regression analyses were used to determine agreement between methods. BIA overestimated fat-free mass by a mean of 2·4 % in boys and 5·7 % in girls, while fat mass was underestimated by 6·5 % in boys and 10·3 % in girls. The percentage fat recorded by BIA was, accordingly, also lower than by DEXA (boys 4·8 %; girls 12·8 %). In boys, however, there were correlations between the size of the difference between methods and the size of the measure under consideration such that in smaller boys fat-free mass was underestimated (r − 0·57;P < 0·001) while fat mass and percentage fat were overestimated (r0·74 for fat mass;r0·69 for percentage fat; bothP < 0·001) with the reverse in bigger boys. Mean differences between techniques were greater in the girls than in the boys but in boys only, the direction of the differences was dependent upon the size of the child. Therefore, BIA may be useful for large-scale studies but is not interchangeable with DEXA and should be interpreted with caution in individuals.

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Bioelectrical impedance analysis to estimate body composition, and change in adiposity, in overweight and obese adolescents: comparison with dual-energy x-ray absorptiometry

BMC Pediatrics ◽

10.1186/1471-2431-14-249 ◽

2014 ◽

Vol 14 (1) ◽

Cited By ~ 41

Author(s):

Ching S Wan ◽

Leigh C Ward ◽

Jocelyn Halim ◽

Megan L Gow ◽

Mandy Ho ◽

...

Keyword(s):

Body Composition ◽

Bioelectrical Impedance Analysis ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Dual Energy ◽

X Ray ◽

Obese Adolescents

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Body composition assessment by bioelectrical impedance analysis and body mass index in individuals with chronic spinal cord injury

Journal of Electrical Bioimpedance ◽

10.5617/jeb.2421 ◽

2019 ◽

Vol 7 (1) ◽

pp. 2-5 ◽

Cited By ~ 1

Author(s):

ERFBM Azevedo ◽

KC Alonso ◽

A Cliquet

Keyword(s):

Physical Activity ◽

Body Mass Index ◽

Body Composition ◽

Fat Mass ◽

Bioelectrical Impedance Analysis ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Fat Percentage ◽

Cord Injury ◽

Inactive Group

Abstract Purpose: To assess body composition and obesity in individuals with spinal cord injury (SCI) who practice and do not practice physical activity using body mass index (BMI) and bioelectrical impedance analysis (BIA). Methods: 39 patients with SCI went through BIA evaluation and BMI was assessed. Patients were divided into four groups according to injury level (paraplegia or tetraplegia) and physical activity achievement (active or inactive). Results: 22 individuals with paraplegia (7 active and 15 inactive) and 17 with tetraplegia (5 active and 12 inactive) were evaluated. BMI, fat percentage, fat mass, lean tissue mass, total body water (TBW), and TBW percentage were assessed in groups. Tetraplegic inactive groups showed higher fat percentage featuring obesity. For paraplegic active group mean fat percentage was 19.61% (±9.27) and mean fat mass was 16.66 kg (±9.71) and for paraplegic inactive group fat percentage was 23.27% (±5.94) and fat mass 18.59 kg (±7.58). For tetraplegic groups in active group the fat percentage was 17.14% (±6.32) and fat mass was 11.22 kg (±5.16) and for inactive group mean fat percentage was 33.68% (±4.74) and fat mass was 25.59 kg (±2.91). When paraplegic and tetraplegic inactive groups were compared differences were observed in fat percentage (p = 0.0003) and fat mass (p = 0.0084). Also, when tetraplegic groups (activeXinactive) were compared differences in percentage (p = 0.0019) and fat mass (p = 0.034) were observed. Only for the paraplegic inactive group BMI result was higher than 25 kg/m2. Conclusion: BMI does not discriminate between obesity levels in individuals with SCI and physical activity can improve body composition and prevent obesity in SCI patients.

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Concordance between Body Composition Indices Measured with Dual-Energy X-Ray Absorptiometry and Bioelectrical Impedance Analysis in Obese Children in Sri Lanka

International Journal of Pediatrics ◽

10.1155/2021/6638057 ◽

2021 ◽

Vol 2021 ◽

pp. 1-9

Author(s):

Mawanane Hewa Aruna Devapriya de Silva ◽

Ruwani Punyakanthi Hewawasam ◽

Sarath Lekamwasam

Keyword(s):

Body Composition ◽

Sri Lanka ◽

Fat Mass ◽

Bioelectrical Impedance Analysis ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Dual Energy ◽

Viable Alternative ◽

Obese Children ◽

X Ray

Dual-energy X-ray absorptiometry (DXA) is the reference standard in the measurement of body composition indices. But, its utility is limited due to the high cost, expertise required, lack of portability, and restricted availability. Therefore, bioelectrical impedance analysis (BIA) has gained recognition in resource-limited settings for the measurement of body composition indices in the screening of children for childhood obesity. To determine whether BIA represents a viable alternative to DXA in the assessment of body composition in obese children in the community setting in Sri Lanka, the concordance between BIA and DXA was determined. Fat mass (FM), percentage fat mass (%FM), and fat-free mass (FFM) were measured in 97 obese children using DXA and BIA, and the concordance between the methods was analyzed using independent sample t -test, regression analysis, and Bland-Altman plots. Significant mean differences were observed between DXA and BIA in measuring FM and FFM. However, high correlations were seen in DXA- and BMI-derived FM and FFM measurements (FM r = 0.92 and FFM 0.83, P < 0.001 for both). Compared to DXA, BIA overestimated FM and %FM and underestimated FFM. When compared with DXA-derived measurements, the accuracy errors (SEE) of BIA for FM, FFM, and %FM were relatively higher in boys (3.56 kg, 4.49 kg, and 5.46%, respectively) than in girls (2.44 kg, 3.72 kg, and 3.5%), respectively. BA plots showed a systematic error in the measurements of FM, FFM, and %FM in both sexes. Despite the limitations inherited, BIA is a viable alternative to DXA for the measurement of body composition in obese children of 5-15 yrs. The accuracy errors observed, however, need to be taken into consideration when interpreting results at the individual level.

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CHANGES IN PHYSIOMETRIC INDICATORS AND BODY COMPOSITION IN YOUNG MEN OF THE REPUBLIC OF SAKHA (YAKUTIA) IN PUBERTY

“Educational bulletin “Consciousness” ◽

10.26787/nydha-2686-6846-2020-22-11-55-60 ◽

2020 ◽

Vol 22 (11) ◽

pp. 55-60

Author(s):

Arzhakova L.I. ◽

Vasilieva T.A. ◽

Chashkina A.M. ◽

Nikolaeva E.N.

Keyword(s):

Body Composition ◽

Fat Mass ◽

Bioelectrical Impedance Analysis ◽

Cell Mass ◽

Young Men ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Body Composition Assessment ◽

The Republic

This study aims to study changes in the body's physiometric indicators of young Yakuts of early and late puberty, living in the Sakha (Yakutia) Republic. 140 young men of Yakut nationality were examined using standardized research methods: dynamometry, spirometry, caliperometry, anthropometry and body composition assessment using bioelectrical impedance analysis with the ABC-01 Medass analyzer. It was found that in Yakut youths between the ages of 14 and 17 there is an increase in skeletal muscle and a decrease in fat mass, indicators of dynamometry, deadlift and lung capacity are increasing. Parallel bioelectrical impedance analysis showed that in young men, between the early and late puberty periods, the levels of fat mass (FM) and an increase in lean (LM), musculoskeletal (MSM) and active cell mass (ACM) decrease. There is growth not only in skeletal muscles and skeleton growth, and the mass of internal organs is also increasing. The data obtained will be used to develop an interval classification of body composition parameters for males of different ages in order to develop standards of physical development specifically for people living in the Sakha (Yakutia) Republic.

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Effects of the COVID-19 pandemic on body composition among patients with rheumatoid arthritis

Modern Rheumatology ◽

10.1093/mr/roab018 ◽

2021 ◽

Author(s):

Takeshi Mochizuki ◽

Koichiro Yano ◽

Katsunori Ikari ◽

Ken Okazaki

Keyword(s):

Rheumatoid Arthritis ◽

Body Composition ◽

Muscle Mass ◽

Fat Mass ◽

Bioelectrical Impedance Analysis ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Fat Free Mass ◽

Fat Mass Index

ABSTRACT Objectives To evaluate effects of the COVID-19 pandemic on body composition among patients with rheumatoid arthritis (RA). Methods A total 102 patients with RA were enrolled. We examined muscle mass, fat-free mass index (FFMI) and fat mass index (FMI) values using bioelectrical impedance analysis between November 2019 and January 2020 (for the first measurement) and September 2020 and January 2021 (for the second measurement). Results The muscle mass was significantly decreased from a median of 34.6 kg at the first measurement to a median of 33.9 kg at the second measurement (p = 0.002). The FFMI was significantly decreased from a median of 15.3 at the first measurement to a median of 14.8 at the second measurement (p = 0.011). Conclusions The present study reveals that muscle mass and FFMI decreased among patients with RA during the COVID-19 pandemic.

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