Total body water volume for white children and adolescents and anthropometric prediction equations: The Fels Longitudinal Study

Chumlea, William Cameron; Schubert, Christine M.; Reo, Nicholas V.; Sun, Shumei S.

doi:10.1111/j.1523-1755.2005.00692.x

Cited by 20 publications

(16 citation statements)

References 19 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the current trial in pediatric patients, the mean V DSS for gadoversetamide for the 2-to 11-year age group and the 12-to 18-year age group appear similar to those found in healthy pediatric subjects [11]. The approximate 20% to 25% increase in the V DSS for gadoversetamide in children, compared to adults, most likely Table 2 Mean gadolinium pharmacokinetic parameters in pediatric patients by age group and by sex C 0 (μg/ml) AUC 0→t (h⋅μg/ml) AUC 0→∞ (h⋅μg/ml) results from a larger extracellular volume found in children [12,13], a phenomenon that has been previously reported for a number of drugs studied in infants and children [14].…”

Section: Discussionmentioning

confidence: 53%

Pharmacokinetics of gadoversetamide injection, a gadolinium-based contrast agent, in pediatric patients

Wible¹,

Tata²,

Lowe³

et al. 2009

Magnetic Resonance Imaging

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 53%

Pharmacokinetics of gadoversetamide injection, a gadolinium-based contrast agent, in pediatric patients

Wible¹,

Tata²,

Lowe³

et al. 2009

Magnetic Resonance Imaging

View full text Add to dashboard Cite

“…Body composition and body tissue impedance were also estimated using the Tanita TBF-300 MA bioelectrical impedance analyser. Estimates of body fatness were subsequently calculated by using a number of child-specific prediction algorithms based on height and weight [36-38], BMI [39-41], or impedance data [42]. All permutations were pooled to yield an aggregated measure of fat mass (kg), which was subsequently converted to fat mass index (kg/m 2 ) by division of stature squared [43,44].…”

Section: Methodsmentioning

confidence: 99%

Levels and patterns of objectively-measured physical activity volume and intensity distribution in UK adolescents: the ROOTS study

Collings

Wijndaele

Corder

et al. 2014

Int J Behav Nutr Phys Act

View full text Add to dashboard Cite

BackgroundFew studies have quantified levels of habitual physical activity across the entire intensity range. We aimed to describe variability in total and intensity-specific physical activity levels in UK adolescents across gender, socio-demographic, temporal and body composition strata.MethodsPhysical activity energy expenditure and minutes per day (min/d) spent sedentary and in light, moderate, and vigorous intensity physical activity were assessed in 825 adolescents from the ROOTS study (43.5% boys; mean age 15.0 ± 0.30 years), by 4 days of individually calibrated combined heart rate and movement sensing. Measurement days were classified as weekday or weekend and according to the three school terms: summer (April-July), autumn (September-December), and spring (January-March). Gender and age were self-reported and area-level SES determined by postcode data. Body composition was measured by anthropometry and bio-electrical impedance. Variability in physical activity and sedentary time was analysed by linear multilevel modelling, and logistic multilevel regression was used to determine factors associated with physical inactivity (<60 min moderate-to-vigorous intensity physical activity/d).ResultsDuring awake hours (15.8 ± 0.9 hrs/d), adolescents primarily engaged in light intensity physical activity (517 min/d) and sedentary time (364 min/d). Boys were consistently more physically active and less sedentary than girls, but gender differences were smaller at weekends, as activity levels in boys dropped more markedly when transitioning from weekday to weekend. Boys were more sedentary on both weekend days compared to during the week, whereas girls were more sedentary on Sunday but less sedentary on Saturday. In both genders light intensity physical activity was lower in spring, while moderate physical activity was lower in autumn and spring terms, compared to the summer term; sedentary time was also higher in spring than summer term. Adolescents with higher fatness engaged in less vigorous intensity physical activity. Factors associated with increased odds of physical inactivity were female gender, both weekend days in boys, and specifically Sunday in girls.ConclusionsPhysical activity components vary by gender, temporal factors and body composition in UK adolescents. The available data indicate that in adolescence, girls should be the primary targets of interventions designed to increase physical activity levels.

show abstract

“…These were used here for the adults. We located similar equations for children aged 8 to 20 that predicted their TBW (assessed by deuterium dilution procedures) using their height and weight 17. That study determined the best regression weights (multipliers) to use with children’s height in cm and weight in kg to estimate their measured scores on TBW (in liters):

For boys : TBW = - 25.87 + (0.23 \times Height) + (0.37 \times Weight)

For girls : TBW = - 14.77 + (0.18 \times Height) + (0.25 \times Weight)

Table 2 reports the mean estimates on TBW by gender and age groups as calculated from the NHANES data.…”

Section: Methodsmentioning

confidence: 99%

Estimated Blood Alcohol Concentrations for Child and Adolescent Drinking and Their Implications for Screening Instruments

2009

View full text Add to dashboard Cite

OBJECTIVES-Although a significant percentage of children drink alcohol, there are as yet few established screening instruments for this population. The construction of such instruments is dependent to some extent on estimates of the effects of different levels of intake of alcohol on children. Blood alcohol concentrations (BAC) in children after consumption of different numbers of standard drinks of alcohol have not previously been estimated. METHODS-The updated Widmark equation to estimate BAC was modified to take account of the differing body composition (total body water) and accelerated rate of ethanol elimination of children. The modified formula was then used with NHANES 1999-2002 data to estimate BAC for over 4,700 male and female children and adolescents at each age from 9 through 17 years old for intake levels from one through five standard drinks. The goal was to determine the number of drinks at each age that led to a BAC ≥ 80 mg/dL, the National Institute on Alcohol Abuse and Alcoholism criterion for binge drinking. RESULTS-The estimated BAC for children after consuming just three standard drinks within a 2-hour period was between 80 and 139 mg/dL for boys aged 9-13 and for girls aged 9-17, indicating substantial potential alcohol impairment. At five drinks within 2 hours, the level used to define binge drinking among college students, children aged 9-13 were estimated to have BACs two to three times the adult legal limit for intoxication of 80 mg/dL. CONCLUSIONS-Binge drinking assessment in children and adolescents requires substantially lower cut-points than those used for college students. Binge drinking should be defined as 3 or more drinks for 9-13 year olds, as 4 or more drinks for boys and 3 or more drinks for girls aged 14 or 15, and as 5 or more drinks for boys and 3 or more drinks for girls aged 16 or 17. KeywordsChildren & Adolescents; Alcohol/Drug Use; Assessment & Surveillance; Epidemiology; Intoxication The Surgeon General recently issued a Call to Action on Underage Drinking 1 to draw greater public attention to the problem, to encourage more targeted research, and to develop more effective prevention efforts in the underage population. A further implication was to improve There continues to be little consensus, however, regarding how drinking and hazardous drinking should be defined. Drinking has been defined as any alcohol use 2 , more than a few sips of alcohol 3 , or a full drink of alcohol. 4 Hazardous drinking is often indicated by "binge drinking," defined as 5+ drinks for men or 4+ drinks for women per occasion. 5 This definition is controversial, however. 6-9Recently, the National Institute on Alcohol Abuse and Alcoholism (NIAAA) redefined binge drinking as a drinking pattern that brings a person's blood alcohol concentration (BAC) to 80 mg/dL or above, a level accompanied by significant physical and mental impairment. 10 For the typical adult, this pattern corresponds to five drinks by a man or four drinks by a woman within a 2-hour period.One problem with the NIAAA d...

show abstract

Total body water volume for white children and adolescents and anthropometric prediction equations: The Fels Longitudinal Study

Abstract: Means are provided for TBW in white children from 8 to 20 years of age, whose average fatness affected the percentage of TBW in body weight. These updated TBW prediction equations perform better than those available from the past.

Cited by 20 publications

References 19 publications

Pharmacokinetics of gadoversetamide injection, a gadolinium-based contrast agent, in pediatric patients

Pharmacokinetics of gadoversetamide injection, a gadolinium-based contrast agent, in pediatric patients

Levels and patterns of objectively-measured physical activity volume and intensity distribution in UK adolescents: the ROOTS study

Estimated Blood Alcohol Concentrations for Child and Adolescent Drinking and Their Implications for Screening Instruments

Contact Info

Product

Resources

About