Validation of Bioelectrical Impedance Against Dual-Energy X-Ray Absorptiometry in Adult, African American Females

Valliant, Melinda; Tidwell, D.K.

doi:10.1016/j.jada.2007.05.340

Cited by 3 publications

(3 citation statements)

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“…The body’s resistance to this current is measured by the instrument and reflects the amount of fat and cell membranes that oppose the current. Studies have demonstrated that BIA estimation of body composition in AA females is comparable to that estimated by dual-energy X-ray absorptiometry (DEXA), 64 often considered the gold standard in measuring fat mass. Researchers 65 have developed a special BIA equation that considers race, based on data obtained from DEXA methodology for adolescent girls.…”

Section: Methodsmentioning

confidence: 99%

Study protocol for clinical trial of the FIT Families multicomponent obesity intervention for African American adolescents and their caregivers: Next step from the ORBIT initiative

Cunningham,

Naar,

Roberts

et al. 2024

BMJ Open

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IntroductionThis study will test the effectiveness of FIT Families (FIT), a multicomponent family-based behavioural intervention, against a credible attention control condition, Home-Based Family Support (HBFS). This protocol paper describes the design of a randomised clinical trial testing the efficacy of the FIT intervention. The protocol will assess the efficacy of FIT to improve health status in African American adolescents with obesity (AAAO) and their primary caregivers on primary (percent body fat) and secondary (physical activity, metabolic control, weight loss) outcomes and its cost-effectiveness.Methods180 youth/caregiver dyads are randomised into FIT or HBFS, stratified by age, gender and baseline per cent overweight. The proposed study follows a two condition (FIT, HBFS) by four assessment time points. Tests will be conducted to identify potential relationship of baseline demographic and clinical variables to our dependent variables and see whether they are balanced between groups. It is hypothesised that youth/caregiver dyads randomised to FIT will show significantly greater reductions in percent body fat over a 12-month follow-up period compared with AAAO receiving HBFS. Preliminary findings are expected by November 2023.EthicsThis protocol received IRB approval from the Medical University of South Carolina (Pro00106021; see ‘MUSC IRB 106021 Main Approval.doxc’ in online supplemental materials).DisseminationDissemination activities will include summary documents designed for distribution to the broader medical community/family audience and submission of manuscripts, based on study results, to relevant peer-reviewed scientific high-impact journals.Trial registration numberNCT04974554.

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Section: Methodsmentioning

confidence: 99%

Study protocol for clinical trial of the FIT Families multicomponent obesity intervention for African American adolescents and their caregivers: Next step from the ORBIT initiative

Cunningham,

Naar,

Roberts

et al. 2024

BMJ Open

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“…Subjects were admitted 1-2 weeks prior to the scheduled surgery date (baseline) and 12-13 weeks following surgery (post-surgery), when there are no longer post-surgery food restrictions and during active weight loss, rather than after a stable new weight has been achieved. Bioimpedance was assessed using the Quantum X BIA analyzer validated in this population as previously described [15]. Body mass index (BMI), percent body fat mass, and waist:hip ratios were recorded during the morning of baseline and postsurgery in-laboratory sessions.…”

Section: Laboratory Sessionsmentioning

confidence: 99%

Impact of Sleeve Gastrectomy on Subjective Hunger and Appetite Ratings and Endocrine Hormones

Leon

White

Casimiro

et al. 2022

Preprint

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Background: The effects of vertical sleeve gastrectomy (VSG) surgery on the levels of patients’ hunger and appetite across the day and relation to weight loss achieved were examined. Methods: Visual analog scale (VAS) hunger and appetite ratings were digitally collected from 10 female participants across a day during in-lab sessions 1-2 weeks before and 12 weeks after surgery. Fasting hormone levels were also assessed in 8 participants. Results: Post-surgery ratings were reduced overall despite fasting levels of leptin and ghrelin changing in favor of increased food intake. Notably, the majority of ratings from before breakfast were not different from ratings after dinner, suggesting that VSG induces changes that overcome the homeostatic drive to oppose a hypocaloric diet. Conclusions: These findings highlight the effectiveness of sleeve gastrectomy surgery in curbing food-seeking behavior despite a negative calorie balance.

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“…All these techniques are useful for estimating the body composition of animal species (Duncan et al 2007) and enable the study of the growth curve for lean tissue and the yields. Bioelectrical impedance analysis (BIA), widely used to estimate the body composition of humans and other animals (Kyle et al 2004a and b;Valliant and Tidwell, 2007), is performed with a four-terminal BIA analyzer that accurately measures the electrical resistance (R) and the electrical reactance (Xc), allowing the calculation of electrical impedance (Z) and other BIA parameters, e.g., the phase angle (PA) and the composition indexes (CI).…”

Section: Introductionmentioning

confidence: 99%

Ichthyometry and electrical bioimpedance analysis to estimate the body composition of tambatinga

et al. 2014

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Body composition analysis is relevant to characterize the nutritional requirements and finishing phase of fish. The aim of this study was to investigate the relationship between ichthyometric (weight, total and standard length, density and yields), bromatological (fat, protein, ash and water content) and bioelectrical-impedance-analysis (BIA) (resistance, reactance, phase angle and composition indexes) variables in the hybrid tambatinga (Colossoma macropomum × Piaractus brachypomus). In a non-fertilized vivarium, 520 juveniles were housed and fed commercial rations. Then, 136 days after hatching (DAH), 15 fish with an average weight of 37.69 g and average total length of 12.96 cm were randomly chosen, anesthetized (eugenol) and subjected to the first of fourteen fortnightly assessments (BIA and biometry). After euthanasia, the following parts were weighed: whole carcass with the head, fillet, and skin (WC); fillet with skin (FS); and the remainder of the carcass with the head (CH). Together, FS and CH were ground and homogenized for the bromatological analyses. Estimates of the body composition and yields of tambatinga, with models including ichthyometric and BIA variables, showed correlation coefficients ranging from 0.81 (for the FS yield) to 1,00 (for the total ash). Similarly, models that included only BIA variables had correlation coefficients ranging from 0.81 (FS and CH yields) to 0.98 (for the total ash). Therefore, in tambatinga, the BIA technique allows the estimation of the yield of the fillet with skin and the body composition (water content, fat, ash, and protein). The best models combine ichthyometric and BIA variables.

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Validation of Bioelectrical Impedance Against Dual-Energy X-Ray Absorptiometry in Adult, African American Females

Cited by 3 publications

References 0 publications

Study protocol for clinical trial of the FIT Families multicomponent obesity intervention for African American adolescents and their caregivers: Next step from the ORBIT initiative

Study protocol for clinical trial of the FIT Families multicomponent obesity intervention for African American adolescents and their caregivers: Next step from the ORBIT initiative

Impact of Sleeve Gastrectomy on Subjective Hunger and Appetite Ratings and Endocrine Hormones

Ichthyometry and electrical bioimpedance analysis to estimate the body composition of tambatinga

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