Bioelectrical impedance analysis models for prediction of total body water and fat-free mass in healthy and HIV-infected children and adolescents,,

Horlick, Mary; Arpadi, Stephen M.; Bethel, James; Wang, Jack; Moye, Jack; Cuff, Paul; Pierson, Richard N.; Kotler, Donald P.

doi:10.1093/ajcn/76.5.991

Cited by 116 publications

(108 citation statements)

References 36 publications

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“…Various approaches to the use of whole body and segmental bioimpedance have been made for assessment of body composition and body fluid volumes in HD patients (4,5,17,31). For WBIS, the body is assumed to be a uniform cylinder with homogeneous conductivity, whereas for SBIS the body is viewed as several cylinders of differing sizes connected in parallel and in series.…”

Section: Discussionmentioning

confidence: 99%

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Zhu¹,

Kuhlmann²,

Kaysen³

et al. 2006

Journal of Applied Physiology

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Section: Discussionmentioning

confidence: 99%

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Zhu¹,

Kuhlmann²,

Kaysen³

et al. 2006

Journal of Applied Physiology

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“…In subjects with CP as well as in controls, height and weight were measured (20), BMI was calculated (21), and body composition was measured using bioelectric impedance analysis (Body stat QuadScan 4000; Bodystat, Isle of Man, UK), a method validated in children (22,23). Pubertal stage was assessed by physical examination according to the Tanner criteria (24,25).…”

Section: Subjectsmentioning

confidence: 99%

Impaired aerobic exercise adaptation in children and adolescents with craniopharyngioma is associated with hypothalamic involvement

Piguel¹,

Ábrahám²,

Bouhours‐Nouet³

et al. 2012

European Journal of Endocrinology

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Objective: Many patients treated for craniopharyngioma (CP) complain of a relative incapacity for physical activity. Whether this is due to an objective decrease in adaptation to exercise is unclear.We assessed exercise tolerance in children with surgically treated CP and appropriate pituitary hormone replacement therapy compared with healthy controls and we examined the potential relationships with hypothalamic involvement, GH replacement, and the catecholamine deficiency frequently observed in these subjects. Design and methods: Seventeen subjects (12 males and five females) with CP and 22 healthy controls (14 males and eight females) aged 15.3G2.5 years (7.3-18 years) underwent a standardized cycle ergometer test. Maximum aerobic capacity was expressed as the ratio of VO 2max to fat-free mass (VO 2max /FFM), a measure independent of age and fat mass in children. Results: VO 2max /FFM was 20% lower in children with CP compared with controls (P!0.05), even after adjustment for gender. Children with hypothalamic involvement (nZ10) had a higher percentage of fat mass (P!0.05) than those without hypothalamic involvement (nZ7) and lower VO 2max /FFM (P!0.05), whereas children without hypothalamic involvement had VO 2max /FFM close to that of controls (PO0.05). GH treatment was associated with a significant positive effect on aerobic capacity (P!0.05) only in the absence of hypothalamic involvement. No relationship was found between exercise capacity parameters and daily urine epinephrine excretion or epinephrine peak response to insulin-induced hypoglycemia. Conclusions: Children with CP have a decrease in aerobic capacity mainly related to hypothalamic involvement. The hypothalamic factors altering aerobic capacity remain to be determined.

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“…Ideally, body composition measurement techniques in children with chronic diseases need to be quick, noninvasive and acceptable for repeated measures. The prediction of total body water (TBW) by bioelectrical impedance analysis (BIA) and in turn, body composition, is an inexpensive technique which has applicability across a range of chronic diseases where standard body composition models are inaccurate 6,7 . Diseases such as juvenile rheumatoid arthritis and crohn's disease, in which chronic inflammation and sub clinical malnutrition combined with use of corticosteroids is an example where BIA with disease specific equations has proven to be a useful means of tracking nutritional status overtime 8,9 .…”

Section: Introductionmentioning

confidence: 99%

A Bedside Measure of Body Composition in Duchenne Muscular Dystrophy

Elliott

Davidson

Davies

et al. 2015

Pediatric Neurology

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Introduction:In clinical practice, monitoring body composition is a critical component of nutritional assessment and weight management in boys with Duchene muscular dystrophy (DMD). We aimed to evaluate the accuracy of a simple bedside measurement tool for body composition, namely bioelectrical impedance analysis (BIA), in boys with DMD. Methods:Measures of fat free mass (FFM) were determined using a BIA machine and compared against estimations obtained from a reference body composition model. Additionally, the use of raw impedance values were analysed using three existing predictive equations 1-3 for the estimation of FFM. Accuracy of BIA was assessed by comparison against the reference model by calculation of biases and limits of agreement.Results: Body composition was measured in ten boys with DMD, mean age 9.01 ± 2.34 years. The BIA machine values of FFM were on average 2.3 ± 14.1 kg higher than reference values. Limits of agreement (based on 95 % CI of the mean) were -7.4 to 2.9 kg. There was a significant correlation between the mean FFM and difference in FFM between the BIA machine and the reference model (r = -0.86, p= 0.02) suggesting that the bias was not consistent across the range of measurements. The most accurate predictive equation for the estimation of FFM using raw impedance values was Pietrobelli's 3 ; mean difference -0.7 kg, 95 % limits of agreement (-3.5 to 2.0 kg). Conclusion:In a clinical setting, where a rapid assessment of body composition is advantageous, the use of raw impedance values, combined with the Pietrobelli 3 equation, is recommended for the accurate estimation of FFM, in boys with DMD.

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Bioelectrical impedance analysis models for prediction of total body water and fat-free mass in healthy and HIV-infected children and adolescents,,

Abstract: This study confirms that BIA prediction models may not be appropriate for individual evaluation but are suitable for population studies. Additional variables may be necessary to eliminate bias for specific subgroups.

Cited by 116 publications

References 36 publications

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Impaired aerobic exercise adaptation in children and adolescents with craniopharyngioma is associated with hypothalamic involvement

A Bedside Measure of Body Composition in Duchenne Muscular Dystrophy

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