Limb fat-free mass and fat mass reference values by dual-energy X-ray absorptiometry (DEXA) in a 20–80 year-old italian population

To optimize infant nutrition, the nature of weight gain must be analyzed. This study aims to review publications and develop growth charts for fat and fat-free mass for preterm and term infants. Body composition data measured by air displacement plethysmography (ADP) and dual energy X-ray absorptiometry (DXA) in preterm and term infants until six months corrected age were abstracted from publications (31 December 1990 to 30 April 2019). Age-specific percentiles were calculated. ADP measurements were used in 110 studies (2855 preterm and 22,410 term infants), and DXA was used in 28 studies (1147 preterm and 3542 term infants). At term age, preterm infants had higher percent-fat than term-born infants (16% vs. 11%, p < 0.001). At 52 weeks postmenstrual age (PMA), both reached similar percent-fat (24% vs. 25%). In contrast, at term age, preterm infants had less fat-free mass (2500 g vs. 2900 g) by 400 g. This difference decreased to 250 g by 52 weeks, and to 100 g at 60 weeks PMA (5000 g vs. 5100 g). DXA fat-free mass data were comparable with ADP. However, median percent-fat was up to 5% higher with DXA measurements compared with ADP with PMA > 50 weeks. There are methodological differences between ADP and DXA measures for infants with higher fat mass. The cause of higher fat mass in preterm infants at term age needs further investigation.

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Comparison of Dual-Energy X-Ray Absorptiometry (DXA) versus a Multi-frequency Bioelectrical Impedance (InBody 770) Device for Body Composition Assessment after a 4-Week Hypoenergetic Diet

Journal of Functional Morphology and Kinesiology ◽

10.3390/jfmk4020023 ◽

2019 ◽

Vol 4 (2) ◽

pp. 23 ◽

Cited By ~ 4

Author(s):

Antonio ◽

Kenyon ◽

Ellerbroek ◽

Carson ◽

Burgess ◽

...

Keyword(s):

Body Composition ◽

Energy Intake ◽

Body Fat ◽

Fat Mass ◽

Bioelectrical Impedance ◽

Dual Energy ◽

Fat Free Mass ◽

Percent Body Fat ◽

Men And Women ◽

X Ray

The purpose of this investigation was to compare two different methods of assessing body composition (i.e., a multi-frequency bioelectrical impedance analysis (MF-BIA) and dual-energy x-ray absorptiometry (DXA)) over a four-week treatment period in exercise-trained men and women. Subjects were instructed to reduce their energy intake while maintaining the same exercise regimen for a period of four weeks. Pre and post assessments for body composition (i.e., fat-free mass, fat mass, percent body fat) were determined via the MF-BIA and DXA. On average, subjects reduced their energy intake by ~18 percent. The MF-BIA underestimated fat mass and percentage body fat and overestimated fat-free mass in comparison to the DXA. However, when assessing the change in fat mass, fat-free mass or percent body fat, there were no statistically significant differences between the MF-BIA vs. DXA. Overall, the change in percent body fat using the DXA vs. the MF-BIA was −1.3 ± 0.9 and −1.4 ± 1.8, respectively. Our data suggest that when tracking body composition over a period of four weeks, the MF-BIA may be a viable alternative to the DXA in exercise-trained men and women.

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Identification of and Associations among Low, Middle, and High Body Composition Trajectories from Age 5- to 17-Years

Children ◽

10.3390/children7100192 ◽

2020 ◽

Vol 7 (10) ◽

pp. 192

Author(s):

Teresa A. Marshall ◽

Alexandra M. Curtis ◽

Joseph E. Cavanaugh ◽

John J. Warren ◽

Steven M. Levy

Keyword(s):

Body Composition ◽

Body Fat ◽

Fat Mass ◽

Dual Energy ◽

Fat Free Mass ◽

Clinical Settings ◽

Fat Mass Index ◽

X Ray ◽

Body Composition Measure ◽

Dxa Scans

Our objective was to identify sex-specific age 5- to 17-year body composition (body mass index (BMI), % body fat, fat mass index, fat-free mass index) trajectories, compare trajectories assigned using age 5 (AGE5) data to those assigned using all available (ALL) data, and compare BMI assignments to other body composition assignments. Cluster analysis was used to identify low, medium, and high trajectories from body composition measures obtained from dual energy x-ray absorptiometry (DXA) scans at 5, 9, 11, 13, 15, and 17 years in a birth cohort followed longitudinally (n = 469). Moderate agreement was observed for comparisons between AGE5 data and ALL data cluster assignments for each body composition measure. Agreement between cluster assignments for BMI and other body composition measures was stronger using ALL data than using AGE5 data. Our results suggest that BMI, % body fat, fat mass index, and fat free mass index trajectories are established during early childhood, and that BMI is a reasonable predictor of body composition appropriate to track obesity in public health and clinical settings.

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Validation of foot-to-foot bioelectrical impedance analysis with dual-energy X-ray absorptiometry in the assessment of body composition in young children: the EarlyBird cohort

British Journal Of Nutrition ◽

10.1017/bjn20061960 ◽

2006 ◽

Vol 96 (6) ◽

pp. 1163-1168 ◽

Cited By ~ 39

Author(s):

Joanne Hosking ◽

Brad S. Metcalf ◽

Alison N. Jeffery ◽

Linda D. Voss ◽

Terence J. Wilkin

Keyword(s):

Body Composition ◽

Young Children ◽

Fat Mass ◽

Bioelectrical Impedance Analysis ◽

Large Scale ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Dual Energy ◽

Fat Free Mass ◽

X Ray

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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Comment on “Reference Values of Total Lean Mass, Appendicular Lean Mass, and Fat Mass Measured with Dual-Energy X-ray Absorptiometry in a Healthy Mexican Population”

Calcified Tissue International ◽

10.1007/s00223-016-0204-9 ◽

2016 ◽

Vol 100 (6) ◽

pp. 653-653

Author(s):

Eva Amado-Bonilla ◽

Maria I. Pintado-Vidal ◽

Maria I. Mangas-Borrego ◽

Estefania Marchena-Ortiz ◽

Jorge Barrantes-Chacon ◽

...

Keyword(s):

Fat Mass ◽

Reference Values ◽

Lean Mass ◽

Dual Energy ◽

Mexican Population ◽

X Ray ◽

Appendicular Lean Mass

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Erratum to: Reference Values of Total Lean Mass, Appendicular Lean Mass, and Fat Mass Measured with Dual-Energy X-ray Absorptiometry in a Healthy Mexican Population

Calcified Tissue International ◽

10.1007/s00223-016-0207-6 ◽

2016 ◽

Vol 100 (3) ◽

pp. 324-324 ◽

Cited By ~ 1

Author(s):

Patricia Clark ◽

Edgar Denova-Gutiérrez ◽

Regina Ambrosi ◽

Pawel Szulc ◽

Rodolfo Rivas-Ruiz ◽

...

Keyword(s):

Fat Mass ◽

Reference Values ◽

Lean Mass ◽

Dual Energy ◽

Mexican Population ◽

X Ray ◽

Appendicular Lean Mass

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Acute Feeding Has Minimal Effect on the Validity of Body Composition and Metabolic Measures: Dual Energy X-ray Absorptiometry and a Multi-compartment Model

British Journal Of Nutrition ◽

10.1017/s0007114521003147 ◽

2021 ◽

pp. 1-39

Author(s):

Abbie E. Smith-Ryan ◽

Gabrielle J. Brewer ◽

Lacey M. Gould ◽

Malia N.M. Blue ◽

Katie R. Hirsch ◽

...

Keyword(s):

Body Composition ◽

Measurement Error ◽

Fat Mass ◽

Total Error ◽

Resting Metabolic Rate ◽

Compartment Model ◽

Total Sample ◽

Dual Energy ◽

Fat Free Mass ◽

X Ray

Abstract Understanding the effects of acute feeding on body composition and metabolic measures is essential to the translational component and practical application of measurement and clinical use. To investigate the influence of acute feeding on the validity of dual energy x-ray absorptiometry (DXA), a four-compartment model (4C), and indirect calorimetry metabolic outcomes, 39 healthy young adults (n=19 females; age: 21.8± 3.1 yrs, weight; 71.5 ± 10.0 kg) participated in a randomized cross-over study. Subjects were provided one of four randomized meals on separate occasions (high carbohydrate, high protein, ad libitum or fasted baseline) prior to body composition and metabolic assessments. Regardless of macronutrient content, acute feeding increased DXA percent body fat (%fat) for the total sample and females [average constant error (CE):-0.30%; total error (TE): 2.34%), although not significant (p=0.062); the error in males was minimal (CE: 0.11%; TE: 0.86%). DXA fat mass (CE: 0.26 kg; TE: 0.75 kg), lean mass (CE: 0.83 kg; TE: 1.23 kg) were not altered beyond measurement error for the total sample. 4C %fat was significantly impacted from all acute feedings (avg CE: 0.46%; TE: 3.7%). 4C fat mass (CE: 0.71 kg; TE: 3.38 kg) and fat-free mass (CE: 0.55 kg; TE: 3.05 kg) exceeded measurement error for the total sample. Resting metabolic rate was increased for each feeding condition (TE: 398.4 kcal/d). Standard pre-testing fasting guidelines may be important when evaluating DXA and 4C %fat, whereas additional DXA variables (FM, LM) may not be significantly impacted by an acute meal. Measuring body composition via DXA under less stringent pre-testing guidelines may be valid and increase feasibility of testing in clinical settings.

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Comparisons of a Multi-Frequency Bioelectrical Impedance Analysis to the Dual-Energy X-Ray Absorptiometry Scan in Healthy Young Adults Depending on their Physical Activity Level

Journal of Human Kinetics ◽

10.1515/hukin-2015-0063 ◽

2015 ◽

Vol 47 (1) ◽

pp. 73-80 ◽

Cited By ~ 34

Author(s):

Julien Verney ◽

Chloé Schwartz ◽

Saliha Amiche ◽

Bruno Pereira ◽

David Thivel

Keyword(s):

Physical Activity ◽

Young Adults ◽

Body Composition ◽

Fat Mass ◽

Physical Activity Level ◽

Bioelectrical Impedance ◽

Dual Energy ◽

Activity Level ◽

Fat Free Mass ◽

X Ray

AbstractThis study aimed at comparing BIA and DXA results in assessing body composition in young adults depending on their physical activity level. Eighty healthy 19-30 years old subjects were enrolled and their body composition (Fat Mass and Fat-Free Mass) was assessed by dual-energy X-ray absorptiometry (DXA) and by a newly developed Bioelectrical Impedance Analyzer (BIA - Tanita MC780). A seven-day physical activity level was assessed using a 3-axial accelerometer. DXA-FM% and BIA-FM% were correlated (p<0.001; r= 0.852; ICC [IC95%]: 0.84 [0.75 – 0.90]; concordance coefficient: 0.844). DXA-FFM and BIA FFM were correlated (p<0.001; r=0.976; ICC [IC95%]: 0.95 [0.93 – 0.97], concordance coefficient: 0.955). DXA and BIA measurements of FM% and FFM were highly correlated in both boys and girls regardless of the physical activity level. Compared with DXA scans, newly developed bioelectrical impedance analyzers provide satisfactory fat mass and lean mass measures in healthy young women and men, despite their physical activity level.

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