A whole-body model to distinguish excess fluid from the hydration of major body tissues

Chamney, Paul; Wabel, Peter; Moissl, Ulrich; Müller, Manfred J.; Bosy‐Westphal, Anja; Korth, Oliver; Fuller, N. J.

doi:10.1093/ajcn/85.1.80

Cited by 481 publications

(518 citation statements)

References 23 publications

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“…In the fasting and LCD group M ExF , NH_LT and NH_AT were comparable to the values reported by Chamney et al 26 The negative values of M ExF indicate a state of normal hydration with no excess of ECFs (Table 4). However, after a small Underfeeding and body water distribution M Siervo et al amount of WL fasting induced an expansion of the M ExF (4.5±5.2 kg) compared with the other two groups.…”

Section: Excess Fluid Lean Tissue and At Masssupporting

confidence: 87%

“…Cellular model: excess fluid, lean tissue and AT mass The excess fluid mass (M ExF ) was calculated according to a 3-C model proposed by Chamney et al 26 The M ExF was defined as the excess of fluid above the physiological amount present in normally hydrated tissues. The model divides the body in AT and adipose-free mass.…”

Section: Four-compartment Modelmentioning

confidence: 99%

“…The primary objective was to look at differences in changes in fat mass (FM) and body water distribution (ECW and ICW) in the three WL groups. The secondary objective was to use two recently proposed cellular models to measure changes in BCM/FFM ratio (Wang's model 11 ) and body fluids (Chamney's model 26 ) after WL.…”

Section: Introductionmentioning

confidence: 99%

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Use of the cellular model of body composition to describe changes in body water compartments after total fasting, very low calorie diet and low calorie diet in obese men

et al. 2010

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Introduction: The cellular model of body composition divides the body in body cell mass (BCM), extracellular solids and extracellular fluids. This model has been infrequently applied for the evaluation of weight loss (WL) programmes. Objectives: (1) To assess changes in body compartments in obese men undergoing fasting, very low calorie diet (VLCD) and low calorie diet (LCD); (2) to evaluate two cellular models for the determination of changes in BCM, fat mass (FM) and body fluids. Materials and methods: Three groups of six, obese men participated in a total fast (F) for 6 days, a VLCD (2.5 MJ per day) for 3 weeks or an LCD (5.2 MJ per day) for 6 weeks. Body composition was measured at baseline and after small (B5%) and moderate (B10%) WL. FM was measured using a four-compartment model. Total body water (TBW) and extracellular water (ECW) were, respectively, measured by deuterium and sodium bromide dilution and intracellular water (ICW) calculated by difference. Two cellular models were used to measure BCM, FM and body fluids distribution. Results: After about 5%WL changes in TBW were F ¼ À3.2±1.2 kg (Po0.01), VLCD ¼ À1.2±0.6 kg (Po0.01), LCD ¼ À0.3 ± 0.9 kg(n.s.). The contribution of TBW to total body mass loss was indirectly associated with FM loss. ECW increased during fasting ( þ 1.5±3.1 kg, n.s.), decreased during the VLCD (À2.0±1.5 kg, Po0.05) and remained unchanged at the end of the LCD (À0.3 ± 1.6 kg, n.s.). ICW significantly decreased during fasting (À4.7 ± 3.9 kg, Po0.05) but did not change in the LCD and VLCD groups. The loss of BCM was more significant in the fasting group and it was directly associated with changes in ICW. Conclusions: After a 6-day period of fasting we observed more ICW losses and less fat mobilization compared with VLCD and LCD. The cellular model of body composition is suitable for the characterization of changes in body fluids distribution during WL.

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Section: Excess Fluid Lean Tissue and At Masssupporting

confidence: 87%

Section: Four-compartment Modelmentioning

confidence: 99%

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Use of the cellular model of body composition to describe changes in body water compartments after total fasting, very low calorie diet and low calorie diet in obese men

et al. 2010

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“…Measuring a whole spectrum allows differentiation between two compartments, being extracellular water and ICW, with fat mass and fat-free mass estimated using empirical equations. The combined efforts of Moissl et al and Chamney et al resulted in a further refined three-compartment model, which includes fluid overload as a separate measurable compartment, enabling discrimination between fluid overload and muscle mass [98,99]. BIA is operator independent and easy to use for nutritional and body composition assessment in ESRD patients [100].…”

Section: Body Composition and Fluid Status Monitoring (6/23)mentioning

confidence: 99%

Wearable sensors: can they benefit patients with chronic kidney disease?

Wieringa

Broers

Kooman

et al. 2017

Expert Review of Medical Devices

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Introduction: This article ponders upon wearable medical measurement devices in relation to Chronic Kidney Disease (CKD) and its' associated comorbidities -and whether these might benefit CKD-patients. We aimed to map the intersection(s) of nephrology and wearable sensor technology to help technologists understand medical aspects, and clinicians to understand technological possibilities that are available (or soon will become so). Areas covered: A structured literature search on main comorbidities and complications CKD patients suffer from, was used to steer mini-reviews on wearable sensor technologies clustered around 3 themes being: Cardiovascular-related, diabetes-related and physical fitness/frailty. This review excludes wearable dialysis -although also strongly enabled by miniaturization -because that highly important theme deserves separate in-depth reviewing. Expert commentary: Continuous progress in integrated electronics miniaturization enormously lowered price, size, weight and energy consumption of electronic sensors, processing power, memory and wireless connectivity. These combined factors boost opportunities for wearable medical sensors. Such devices can be regarded as enablers for: Remote monitoring, influencing human behaviour (exercise, dietary), enhanced home care, remote consults, patient education and peer networks. However, to make wearable medical devices succeed, the challenge to fit them into health care structures will be dominant over the challenge to realize the bare technologies themselves. ARTICLE HISTORY

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“…In this paper, the terms "body fluid", "body water" and "hydration level" may be used interchangeably by assuming that the difference in volume between body fluid and body water is negligible [12]. The rest of the paper is organised as follows.…”

Section: Introductionmentioning

confidence: 99%

A Review on Opportunities To Assess Hydration in Wireless Body Area Networks

Asogwa

Lai

2017

Electronics

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Abstract:The study of human body hydration is increasingly leading to new practical applications, including online assessment techniques for whole body water level and novel techniques for real time assessment methods as well as characterization for fitness and exercise performance. In this review, we will discuss the different techniques for assessing hydration from electrical properties of tissues and their components and the biological relations between tissues. This will be done mainly in the context of engineering while highlighting some applications in medicine, mobile health and sports.

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A whole-body model to distinguish excess fluid from the hydration of major body tissues

Cited by 481 publications

References 23 publications

Use of the cellular model of body composition to describe changes in body water compartments after total fasting, very low calorie diet and low calorie diet in obese men

Use of the cellular model of body composition to describe changes in body water compartments after total fasting, very low calorie diet and low calorie diet in obese men

Wearable sensors: can they benefit patients with chronic kidney disease?

A Review on Opportunities To Assess Hydration in Wireless Body Area Networks

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