Total body water calculation formula. TBW = Total Body Water (estimated as 0.

Total body water calculation formula Abbrev = abbreviation. Allen in 1956. See the total body water calculator. Next, determine the body weight (lbs). Water Intake Formula. This gives a rough estimate of TBW. You can use this body water calculator to estimate your body water based on age, height, weight, and sex. In 1962, based on Dr. Well known indicators for this technique include tritium (total body water), bromine-82 or mannitol (for extracellular fluid), red cells labelled with 53Cr for total blood volume, or albumin tagged Aug 5, 2024 · How can I measure my total body volume for BVI calculation? Total body volume can be measured using various methods, including water displacement, air displacement plethysmography (ADP), and 3D body scanners. Water in Litres. The free water deficit calculation offers a systematic method to estimate the volume of hypotonic fluid necessary to restore serum sodium to a target level, typically around 140 mEq/L. Free water deficit doesn’t take into account ongoing water losses. The percentage of the body water content varies with age, sex, size, etc and can be found by body fluid calculator. TBW is the total body water. 3362 X weight; TBW(Female) = -2. 74 = 161. Information on the total body water (TBW) can be used to estimate body composition and its compartments such as fat-free mass, fat mass, and body solids (1–4). The validity of this formula was assessed Apr 26, 2021 · How do you Calculate Your Total Body Water? (0. 09516 × age+ 0. It’s generally believed that the average male body is made up of 60% water. Feb 19, 2009 · B ODY composition measurements are important to assess nutritional depletion and lean muscle mass wasting in elderly individuals and acutely ill patients. 3362 × weight in kg) Dehydration, illness, or muscle loss can quickly impact total body water. Patient sex Formula: Body Water Deficit (in liters) = ( 0. — Free Water Deficit = %Total Body Water, fraction x [(plasma sodium/140) -1] — %Total Body Water = Age / Sex coordinate x body weight(kg) Overall Concept. 3362 × weight W …View the full answer Calculation Formula. 45 gpg About the Parameters: Normal values (and limits) are expressed in C Units. 6 x weight) / Normal serum Na where, Measured serum Na = Measured amount of sodium in mEq/L or mmol/L. 6 if male, or 0. Next, enter your body weight in kilograms, followed by your current serum sodium level and your desired serum sodium level. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. The Total Body Water Calculator uses the following formula to calculate the total body water value: Total Body Water = Weight x TBW Percentage The Free Water Deficit in Hypernatremia calculates free water deficit in hypernatremia or dehydration by estimated total body water. Total Body Water (TBW) = 2. 6 * Wt * [(Na/140) - 1] ) Where, Wt = current weight in kg Na = measured serum Na in mmol/L (Assumes Total Body Water is 60% of current body weight; may be less in female or cachectic patients) Body Fluid Balance Calculator by Inputs and Outputs Calculates fluid balance from sodium concentrations which indicate net 0. 9) Mar 27, 2016 · Water deficit = total body water - (total body water × serum sodium / 140) If one were to obsess over these matters, one would enter these equations into a spreadsheet and demonstrate that with identical variables, mathematically the results differ only by 1L of estimated water deficit: How do you calculate total body water? Formula For Calculating Total Body water for male and female are : Male TBW = 2. The Watson formula, which is recommended for the calculation of TBW, was derived in healthy volunteers thereby leading to potentially inaccurate TBW estimates in maintenance hemodialysis recipients. 3 ECF is composed of both interstitial fluid volume (ISF, ~15%), transcellular fluid Background: The water-deficit equation {WD(1) = 0. 09156 × age) + (0. In babies with meningitis, hypoxic ischemic encephalopathy or severe intracranial hemorrhage, consider diabetes insipidus, which should be treated initially by increasing free water administration. Z100)]+19. Enter the Leg-to-Torso Ratio (LTR) – Use an estimated or measured ratio of leg length to torso. Well known indicators for this technique include tritium (total body water), bromine-82 or mannitol (for extracellular fluid), red cells labelled with 53Cr for total blood volume, or albumin tagged Body height (h), hip circumference (C) as well as body impedance at 100 kHz (Z100) were also measured. Most Used Body Composition & Metabolism Calculators Body mass index (BMI) percentiles and Z-scores, females 2 to 20 years (CDC) The percentage of the body water in different fluid compartments adds up to total body water. Still, these suppositions fail to take into account things like body weight or age. Background: In paediatric clinical practice treatment is often adjusted in relation to body size, for example the calculation of pharmacological and dialysis dosages. American Journal of Clinical Nutrition 1980, 33 (1): 27-39) For males. k. Multifrequency BIA was performed at fasting state in controls and after HD. Estimating the Total Body Water. By inputting these details, users can quickly get an estimate of their total body water, which is an important measure of hydration Total body water in a normal-weight dog is estimated to be 534 to 660 mL/kg. Multiply your weight in kg by 0. 5 How to Use the Winters' Formula Calculator. In comparison, the average female is 50% water. Calculation: Current Total Body Water (TBW) Current TBW = Normal TBW * (140 / sNa) Where 140 mEq/L is the normal Serum Sodium , and sNa is the current Serum Sodium Jan 1, 2001 · We performed BIA and anthropometric measurements in 67 healthy adults and 101 HD patients. <img alt="This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. Total body water can be estimated using the following classic formulae: For males. 25, 12 months = 1) Blood & plasma volume Body surface area (BSA) & total body water (TBW) Dialysis adequacy Fractional excretion of magnesium Free water deficit (FWD) in hypernatremia GFR - pediatric (1-25 years) GFR - adult (≥18 years) Tacrolimus hematocrit adjustment Time to KRT BP percentiles (1-18 years) Cancer survivor kidney failure risk CKRT hyponatremia Total Body Water in Adult Females (Humes-Weyer formula) estimates the amount of water in the body based on height, weight, and age. 3362 × W. 1074 X height + 0. Example. Total Body Water Calculator. Most Used Body Composition & Metabolism Calculators Body mass index (BMI) percentiles and Z-scores, females 2 to 20 years (CDC) The calculator's output field is the Total Body Water value, which represents the total amount of water in liters in your body. 62 ppm (9. If a person has a total body length of 170 cm and a leg-to-torso ratio of 2. 33%. Frequently Asked Questions (FAQs) 1. Am J Clin Nutr . 1 day ago · Enter the Total Body Length (L) – Measure from head to toe in centimeters or inches. , Rahway, NJ, USA (known as MSD outside the US and Canada) — dedicated to using leading-edge science to save and improve lives around the world. Multiply the above result by the total body water - this is the free water deficit. Jul 30, 2024 · There are two ways to calculate total body water from weight: To estimate the body water content knowing that the average adult male is 60% of water, and average adult female - 50%. 6 × B(m) × [1 - (140 ÷ Na(+))]; B(m) denotes body mass} is used in medicine and nutrition to estimate the volume (L) of water required to correct dehydration during the initial stages of fluid-replacement therapy. How to calculate Total Body Water? There are a few simple ways to estimate your total body water percentage at home: Body weight method. If you know a person's age and height, you can use P. This water content makes up a significant part of both volume and weight. TBW = -2. 1074 x Height (cm) + 0. there is a separate formula for the children to determine Aug 5, 2024 · First, determine the water weight (lbs). Total Body Water :-94% in the fetus, 85% in premature Total Body infants, 78% in full-term infants, and Water 60% in adults. 2466 X weight; But how do you calculate Body Water Percentage? Are the additional input of Fat and Muscle enough to make the calculation possible? Update 22/12/2017: Jun 27, 2015 · Body water compartments are usually measured using indicator dilution techniques. These formulas take into account the individual's height, weight, and age to provide an estimation of total body water. CF= conversion factor. Jul 18, 2024 · An advanced formula used to calculate blood volume was developed by Dr. 1074 × height + 0. 44 7 - 0. The aim of our study was to compare two different methods of determining V and explore which one is suitable for clinical application. Water and Sodium Balance Oct 17, 2021 · Physiologic factors specific to the patient that affects the Drug distribution are. Nadler found more accurate coefficients and published the equation in his article titled Prediction of blood volume in normal human adults. Step-by-Step Guide: Using the Sodium Correction Calculator Total body water volumes for adult males and females estimated from simple anthropometric measurements. Total Body Water in Women (Watson formula) / In these topics. 9) Mar 27, 2016 · Water deficit = total body water - (total body water × serum sodium / 140) If one were to obsess over these matters, one would enter these equations into a spreadsheet and demonstrate that with identical variables, mathematically the results differ only by 1L of estimated water deficit: The distribution of body fluid is dependent on: - Age - Muscle Mass Adults: TBW = 60% of total body weight in kilograms Infants & Elderly: Higher % of body fluid, averaging = 70% - 80% Fatty tissue contains less water than muscles. TBW calculator is used to calculate the total desired water required for the body. Multiply it by their body weight to estimate the total body water. Estimate the total body water (TBW): TBW = 55 kg × 0. Measure your body weight. This free water deficit calculator addresses the water Na balance and is often used in the management of hypernatremia. 1980 Jan;33(1):27-39. The volume of the compartment can be estimated from the same equation that described the volume of distribution. 447 – (0. Total Body Water (BIA formula) is a method to estimate the amount of water present in a person's body using bioelectrical impedance analysis. Units (c) x CF = Units (si) (unless otherwise specified). Total Body Water in Adult Males (Watson formula) estimates the amount of water in the body based on weight, height, age, and gender. Total Body Water Calculator formula. Water and Sodium Balance Brought to you by Merck & Co, Inc. 1 Two-thirds (about 40%) of the total body water is stored in cells within the intercellular fluid (ICF), and one third of total body water is stored in the extracellular fluid (ECF). MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. 2466 X weight. Formula: Body Water Deficit (in liters) = ( 0. Most Used Body Composition & Metabolism Calculators Body mass index (BMI) percentiles and Z-scores, females 2 to 20 years (CDC) Jan 10, 2018 · Background: Accurate assessment of total body water (TBW) is essential for the evaluation of dialysis adequacy (Kt/V urea). , Rahway, NJ, USA (known as MSD outside the US and Canada)—dedicated to using leading-edge science to save and improve lives around the world. In addition to use of body weight, for some purposes total body water (TBW) and This free water deficit calculator addresses the water Na balance and is often used in the management of hypernatremia. “heavy water”) were carried out in order to obtain a “gold standard” of total body water for a large population of normal individuals; statistics were then applied to generate an equation which accurately predicts TBW based on Calculating Total Body Water. TBW is lower in obese (50%) and higher in lean individuals (70%). Ideal Total Body Water ( TBW ) Calculation. 62 ÷ 17. 88 + 61. Step 2: Calculate magnesium hardness as CaCO₃: Mg²⁺ as CaCO₃ = 15 mg/L × 4. There can be considerable variation in body water percentage based on factors like age, health, water intake, weight, and sex. 671. 5 x body weight in kg for females) This formula helps estimate how much the serum sodium will change with the administration of a specific fluid. 1069 X height + 0. Water in Litres; Height in cm; Weight in kg How To Calculate Total Body Water? Total Body Water (TBW) can be estimated using various formulas tailored to different demographics. Treatment goals include gradual correction to minimize the risk of The distribution of body fluid is dependent on: - Age - Muscle Mass Adults: TBW = 60% of total body weight in kilograms Infants & Elderly: Higher % of body fluid, averaging = 70% - 80% Fatty tissue contains less water than muscles. Total Body Water in Men (Watson formula) / In these topics. 09156 x age) + (0. Finally, calculate the Body Water Percentage. Water in Litres; Age in years; Height in cm; Weight in kg; For females. Feb 1, 1997 · Indirect methods such as anthropometry (A), Watson formula (W), creatinine kinetics (CK), and body electrical impedance (BEI) are increasingly applied to determine total body water (TBW) and lean This calculator specifically addresses the total sodium deficit for a patient considering their total body water (TBW) alongside current and desired serum sodium levels. Next, determine your activity level. What is the Total Body Water Calculator? The Total Body Water Calculator is a tool that estimates the amount of water contained within a person’s body, based on their age, weight, gender, and optionally, height. Weight = 210 lb To calculate total body water we use Watson formula i. 3362 x weight in kilograms) = total body water (TBW) in litres. These methods vary in accuracy, accessibility, and cost. 3362 X weight. Aug 5, 2024 · How can I measure my total body volume for BVI calculation? Total body volume can be measured using various methods, including water displacement, air displacement plethysmography (ADP), and 3D body scanners. . Jan 18, 2024 · The most accurate formula for calculating total body water is the Watson formula: Example Solve: Let’s consider a 30-year-old male with a height of 175 cm and a weight of 70 kg. Oct 7, 2009 · For the calculation of the Watson formula, for instance, dilutional methods using deuterated water (a. 3362 x Weight (kg), for men, The Total Body Water Calculator uses the following formula to calculate the total body water value: Total Body Water = Weight x TBW Percentage The TBW Percentage is determined based on the gender and age input values. 74 mg/L; Step 3: Calculate total hardness: Total Hardness = 99. Age: years Height : inch. e Total body water (TBW) = 2. Therefore, several indirect equations for estimating the TBW using simple anthropometric variables are commonly employed. The calculator uses different formulas, including Watson's and Hume-Weyer's formulas, to estimate body water content for both males and females. We calculate this by multiplying the patient's weight by the age/sex coordinate, which equals 60% for children and adult males, 50% for adult females and elderly males, and 45% for elderly females. Most Used Body Composition & Metabolism Calculators Body mass index (BMI) percentiles and Z-scores, females 2 to 20 years (CDC) Dec 4, 2024 · Basic steps for using body water calculator. "heavy water") were carried out in order to obtain a "gold standard" of total body water for a large population of normal individuals; statistics were then applied to generate an equation which accurately predicts TBW based on variables MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. First, you need to input your gender, as it affects the total body water calculation. 6 x body weight in kg for males and 0. Enter the patient's weight, measured Na and normal Na to get the result. 00046971 * W + 0. Total Body Water in Adult Females (Watson formula) is a calculation used to estimate the amount of water in the body. 447 - 0. 6 * Wt * [(Na/140) - 1] ) Where, Wt = current weight in kg Na = measured serum Na in mmol/L (Assumes Total Body Water is 60% of current body weight; may be less in female or cachectic patients) Related Calculator: Jul 5, 2022 · What is Total Body Water (TBW)? Total Body Water (TBW) is an estimation of how much of your body weight is water. Please scroll down for details on using this Total Body Water calculator. Enter the required value in the total body eater calculator Formula: Desired total Body Water (TBW) in L= (Measured serum Na x 0. Jul 10, 2019 · The average percentages of water in the human body vary by gender, age, and weight, though they'll remain above 50 percent for most of your life. Weight : lbs. For males: TBW = 2. - For that reason, the elderly and infants lose fluid more quickly than adults and become dehydrated at a more Background: In paediatric clinical practice treatment is often adjusted in relation to body size, for example the calculation of pharmacological and dialysis dosages. Several equation assumptions may limit its accuracy, but none have been Using the formula: BWP = 50 / 150 * 100, your Body Water Percentage would be 33. The accurate measurement of TBW is difficult, and it requires isotopic dilution techniques. 1 = 9. co Total body water can be estimated using the following classic formulae: For males. The formulas used to calculate the amount of free water required to balance the deficit are: Free water deficit = TBW x (measured Na + /ideal Na + – 1) Where: TBW is total body water = correction factor x weight in kg Total body water can be estimated using the following formulas (Watson PE, Watson ID, Batt RD. 097 – 0. Study with Quizlet and memorize flashcards containing terms like What percentage of Total Body Water (TBW) is typically Intracellular Fluid (ICF)?, For a 25-year-old male patient weighing 60 kg, how much of his weight is Total Body Water (TBW)?, What formula is used to calculate Total Fluid Requirement in burn patients according to the Parkland formula? and more. 447 – 0. To find percentage of body water mention gender, age, height and current weight. 00000056 * W^2 – 0. E. 1 In accordance with the relationship described by Edelman et al. Height in cm. To measure body water percentage it is a good idea to use the bodywater calculator, use of these online calculator is simple. TBW(Male) = 2. - For that reason, the elderly and infants lose fluid more quickly than adults and become dehydrated at a more Jan 2, 2025 · Free Water Deficit (FWD in L) = (Normal TBW) * (sNa - 140) / 140; Free Water Deficit (FWD in L) = (Normal TBW) * (sNa/140 - 1) Where 140 mEq/L is the normal Serum Sodium, and sNa is the current Serum Sodium; Adjustments to Total Body Water. Watson’s formula, which is a widely used equation for estimating TBW. The preferred system of measurement can be Metric or Imperial. Water and Sodium Balance Jun 30, 2005 · The measurement of total body water (TBW) is frequently performed to evaluate the body composition and nutritional status. Watson Formula for Women –2. 09516 X age + 0. These methods share the disadvantage that they have been validated for healthy men only. Example Calculation Background: Indirect methods such as anthropometry (A), Watson formula (W), creatinine kinetics (CK), and body electrical impedance (BEI) are increasingly applied to determine total body water (TBW) and lean body mass (LBM) in dialysis patients. 5 kg. Learn how much of your body is water, where it's Sep 7, 2017 · Body Fluid Volumes calculator including interstitial fluid 2/3 of the total body water, extracellular fluid volume 1/3 of your body's water, plasma volume. What is the significance of knowing my Body Water Percentage? Understanding your Body Water Percentage helps you monitor your hydration levels, which can impact your overall health and performance. 6 for males Jun 14, 2024 · TBW – Total body water. Is there an ideal Body Calculate your daily water intake for your body size and learn how much water your body needs. 069 [hC2/(4 pi . The calculator's model primarily uses the Rose equation, which assumes that effective plasma osmolarity = 2 x plasma [Na+]. 09156 × A + 0. TBW is approximately 60% in men and 50% to 55% in women. water needed [oz] = body weight [lbs] + (12 Dec 21, 2024 · To calculate the free water deficit: Determine your patient's sex/age coordinate. The values which is provided in question to calculate the Total body water volume is weight. 6 * Wt * [(Na/140) - 1] ) Where, Wt = current weight in kg Na = measured serum Na in mmol/L (Assumes Total Body Water is 60% of current body weight; may be less in female or cachectic patients) Related Calculator: Formula: Body Water Deficit (in liters) = ( 0. The average adult human is approximately 60% water, and the average child is about 70% water. 1074 × H + 0. Divide the patient's blood sodium level by its desired value and subtract 1. Use the calculator or formula above to calculate your recommended water intake. 1074 × height in cm) + (0. The calculation used for TBW is simplified, however many more complex equations integrating age and height exist in the literature. 1069 x height) + (0. 62 mg/L (ppm) Step 4: Convert to grains per gallon (optional): Grains per gallon = 161. Professional Consumer <img alt="This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. [1] Here are the commonly used formulas: Watson Formulas: For Men: TBW (liters) = 2. 45 gpg; The water sample has a hardness of 161. 9% saline, and free water losses (GI, urine, etc) and gains (IV fluids, PO, etc). Calculate Total Body Water by using Watson, Hume-Weyer, Chertow, Mellits and Cheek Formula, and get the mean value of those at a time. It factors in various aspects like your age, gender, weight, activity level, and sometimes even your climate. 5 = 27. Adequate hydration (30 mL/kg actual body weight) is critical for total recovery of COVID-19 patients; therefore, these patients should increase their daily fluid intake (2. 5-3 L/day) by consuming This formula is similar to the H2O excess one, see hyperlinks below. 116 = 61. Watson's formula. 097 + (0. Results: The values obtained for h, C and Z100 were introduced in the calculations and the following developed formula for total body water was determined: TBW = 0. AGE ENTER VALID DATA (3 months = 0. Spcmn = specimen. Our blood volume calculator uses this formula: Jul 12, 2023 · How to calculate water intake? First, determine your body weight. There are several methods for calculating the total amount of water in the body. This study aimed: a) to develop BIA-based models for TBW and ECW prediction based on dilution methods in a sample of national level athletes; and b) to validate the new models with a cross-validation approach in a separate cohort Dec 22, 2017 · I know the Watson Formula calculates Total Body Water (in Litres) as. 5 for women). Plasma Protein binding of drug:- Plasma protein binding refers to the degree to which medications attach to proteins within the blood This formula is similar to the H2O deficit one, see hyperlinks below. It only tells you what the deficit is right now, it doesn’t tell you what the deficit will be in the future. 3362 X weight How To Calculate Total Body Water? Total Body Water (TBW) can be estimated using various formulas tailored to different demographics. 09156 x Age + 0. For females A Body Water Calculator is an online tool or formula designed to estimate how much water you should be drinking daily to stay hydrated. In our Total Body Water Calculator we use the P. 097 + 0. The free water clearance is a value that will help tell us to calculate the ongoing water losses. 2. Allen's work, Dr. Substitute values in the sodium_deficit formula to get the corresponding value: Free water deficit = TBW x (Measured Na / Ideal Na – 1) Where: Ideal Na+ can be considered 140 mEq/L; TBW is total body water = correction factor x weight in kg; The correction factors depending on the patient type can be found in the text below the calculator. Finally, calculate your water intake. 1069 x Formula Water Deficit (L) = TBW x ( [(Serum Sodium / 140) - 1] ) Where TBW (Total Body Water) = Weight (kg) x % body water (0. Categories of Water Deficit in Hypernatremia How do you calculate total body water? Formula For Calculating Total Body water for male and female are : Male TBW = 2. 09156 X age + 0. Formula For Calculating Total Body water for male and female are : Male TBW = 2. a. 00012828 * H Purpose: Bioelectrical impedance analysis (BIA) equations can predict total body water (TBW) and extracellular water (ECW) in non-athletic healthy populations. In addition to use of body weight, for some purposes total body water (TBW) and Feb 12, 2024 · Ascertaining the total body water (V), usually obtained by the Watson formula or bioimpedance spectroscopy (BIS), is crucial for the calculation of Kt/V in patients with peritoneal dialysis (PD). Here is an online calculator to find the quantity of water present in your body. Using the Winters' Formula Calculator is straightforward. For females: See full list on mdapp. Next, gather the formula from above = BWP = WW / BW * 100. TBW = Total Body Water (estimated as 0. 447 - (0. Click “Calculate” – The calculator will determine the torso length. Age in years. desired_sodium – Normal sodium level; use 140 mEq/L. Noticing the great demand for a calculation method that is not exclusively based on blood alcohol, a formula for calculating breath alcohol based on blood alcohol was published in 1989, but in which the body surface area (BSA) was considered the most important influencing variable. Step-by-Step Guide: Using the Sodium Correction Calculator Jan 2, 2025 · Free Water Deficit (FWD in L) = (Normal TBW) * (sNa - 140) / 140; Free Water Deficit (FWD in L) = (Normal TBW) * (sNa/140 - 1) Where 140 mEq/L is the normal Serum Sodium, and sNa is the current Serum Sodium; Adjustments to Total Body Water. PubMed ID: 6986753 Hypernatremia arises when total body water losses outpace total body solute, resulting in a net deficit of free water relative to sodium. serum_sodium – Sodium concentration in the patient's blood. For a woman, this is 50% of her body weight. (1958), 2 the calculator assumes that the serum sodium concentration is proportional to the ratio of total body exchangeable sodium and potassium to total body water: Plasma [Na+] ~= (TB Na . 2466 x weight) In our Total Body Water Calculator we use the P. 5 if female. Total Body Water (TBW) is the total amount of water present in the body in the form of body fluids, tissues and organs. The total body water calculation provides a complete evaluation of the volume of water in the body. Dec 18, 2023 · Body water compartments are usually measured using indicator dilution techniques. Calculate the length and intensity of your activity. The Free Water Deficit in Hypernatremia is calculated by estimated total body water fraction, patient current sodium values and patient age sex range by using below equation. TBW = Wt (kg) x 0. It takes into account a person’s body weight, height, age, and gender to provide an estimate of their TBW value: Medical calculators › Critical Care Calculators › Total body water calculator . Decrease Total Body Water by 10% in Hypernatremia (multiply TBW * 0. Weight in kg . 3362 × weight in kg) Calculate your total Body Water (TBW) percentage with our user-friendly online calculator and stay hydrated. When due to water deficit, it is associated with weight loss and should be treated by increasing free water to correct negative water balance slowly. 1074 x height) + (0. skip to main content. 3362 x weight) Female TBW = -2. It takes into account a person’s body weight, height, age, and gender to provide an estimate of their TBW value: TBW = 2. Aug 5, 2024 · Where: BV is the body volume (liters) W is the weight (kilograms) BD is the body density (kg/L), estimated using the Brozek formula: BD = 1. Body fat method May 5, 2020 · For the calculation of the Watson formula, for instance, dilutional methods using deuterated water (a. 6 for men and 0. Four anthropometry‐based equations were used: 58% of actual body weight (TBW‐58), the Watson formula (TBW‐W), the Hume formula (TBW‐H), and the Chertow formula (TBW‐C). ywzmxs zzkfvl atiz jssg ydtq fso nmxwe cwgc gaw qthvx heoz mggaf nqcbrdf huel uanctcc