The relationship between BMI and percent body fat, measured by bioelectrical impedance, in a large adult sample is curvilinear and influenced by age and sex

2010 ◽  
Vol 29 (5) ◽  
pp. 560-566 ◽  
Author(s):  
S. Meeuwsen ◽  
G.W. Horgan ◽  
M. Elia
Keyword(s):  
Body Fat ◽  
Bioelectrical Impedance ◽  
Percent Body Fat ◽  
Adult Sample ◽  
The Relationship ◽  
Large Adult ◽  
Age And Sex

scholarly journals Body mass index as a measure of body fatness: age- and sex-specific prediction formulas

1991 ◽  
Vol 65 (2) ◽  
pp. 105-114 ◽  
Author(s):  
Paul Deurenberg ◽  
Jan A. Weststrate ◽  
Jaap C. Seidell
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Body Fat ◽  
Prediction Error ◽  
Bioelectrical Impedance ◽  
Skinfold Thickness ◽  
Fat Percentage ◽  
Wide Range ◽  
The Relationship ◽  
Age And Sex

In 1229 subjects, 521 males and 708 females, with a wide range in body mass index (BMI; 13.9–40.9 kg/m2), and an age range of 7–83 years, body composition was determined by densitometry and anthropometry. The relationship between densitometrically-determined body fat percentage (BF%) and BMI, taking age and sex (males =1, females = 0) into account, was analysed. For children aged 15 years and younger, the relationship differed from that in adults, due to the height-related increase in BMI in children. In children the BF% could be predicted by the formula BF% = 1.51xBMI–0.70xage–3.6xsex+1.4 (R2 0.38, SE of estimate (see) 4.4% BF%). In adults the prediction formula was: BF% = 1.20xBMI+0.23xage−10.8xsex–5.4 (R2 0.79, see = 4.1% BF%). Internal and external cross-validation of the prediction formulas showed that they gave valid estimates of body fat in males and females at all ages. In obese subjects however, the prediction formulas slightly overestimated the BF%. The prediction error is comparable to the prediction error obtained with other methods of estimating BF%, such as skinfold thickness measurements or bioelectrical impedance.

scholarly journals Accelerometer-determined peak cadence and weight status in children from São Caetano do Sul, Brazil

2017 ◽  
Vol 22 (11) ◽  
pp. 3689-3698
Author(s):  
Gerson Luis de Moraes Ferrari ◽  
Timóteo Araújo ◽  
Luis Carlos Oliveira ◽  
Victor Keihan Rodrigues Matsudo ◽  
Emily Mire ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Fat ◽  
Weight Status ◽  
Bioelectrical Impedance ◽  
Normal Weight ◽  
Body Fat Percentage ◽  
Obese Children ◽  
Fat Percentage ◽  
The Relationship ◽  
Brazilian Children

Abstract The purpose of this study was to determine the relationship between peak cadence indicators and body mass index (BMI) and body fat percentage (BF%)-defined weight status in children. The sample comprised 485 Brazilian children. Minute-by-minute step data from accelerometry were rank ordered for each day to identify the peak 1-minute, 30-minute and 60-minute cadence values. Data were described by BMI–defined and bioelectrical impedance-determined BF% weight status. BMI-defined normal weight children had higher peak 1-minute (115.5 versus 110.6 and 106.6 steps/min), 30-minute (81.0 versus 77.5 and 74.0 steps/min) and 60-minute cadence (67.1 versus 63.4 and 60.7 steps/min) than overweight and obese children (p<.0001), respectively. Defined using %BF, normal weight children had higher peak 1-minute (114.5 versus 106.1 steps/min), 30-minute (80.4 versus 73.1 steps/min) and 60-minute cadence (66.5 versus 59.9 steps/min) than obese children (p<.0001). Similar relationships were observed in boys; however, only peak 1- minute cadence differed significantly across BMI and %BF-defined weight status categories in girls. Peak cadence indicators were negatively associated with BMI and BF% in these schoolchildren and significantly higher among normal weight compared to overweight or obese children.

Field Testing: Assessing the Physical Fitness of Mildly Mentally Retarded Individuals

1988 ◽  
Vol 5 (4) ◽  
pp. 318-331 ◽  
Author(s):  
Kenneth H. Pitetti ◽  
Jeffrey E. Fernandez ◽  
David C. Pizarro ◽  
Nancy B. Stubbs
Keyword(s):  
Body Fat ◽  
Aerobic Capacity ◽  
Correlation Coefficients ◽  
Bioelectrical Impedance ◽  
Field Testing ◽  
Mentally Retarded ◽  
Percent Body Fat ◽  
Assessment Protocol ◽  
Hand Grip ◽  
Fitness Assessment

This study set out to develop a simple field testing protocol for evaluating the aerobic capacity, forearm isometric strength, and percent body fat of mentally retarded individuals (MRI). A total of 33 (MR) (M IQ=68) subjects (26 males, 7 females) ranging in age from 12 to 49 years participated in this study. A submaximal exercise test using the Schwinn Air-Dyne ergometer was used to estimate aerobic capacity (V̇O2max). Forearm strength was determined by using a hand grip isometric dynamometer. Percent body fat (%BF) was determined by the skinfold method and bioelectrical impedance. All 33 MR subjects who were tested successfully completed the fitness assessment protocol. Correlation coefficients for directly measured versus estimated V̇O2 max and test-retest for forearm strength for 10 of the subjects was .91 and .95, respectively. Slight variations were seen in the methods used to determine %BF. Based on these statistics, it is recommended that the protocol used in this study be considered by those involved in the physical education or training of MRI.

Age and sex influence the relationship between waist circumference and abdominal fat distribution measured by bioelectrical impedance

2012 ◽  
Vol 32 (6) ◽  
pp. 466-469 ◽  
Author(s):  
Rocio Mateo-Gallego ◽  
Ana M. Bea ◽  
Estibaliz Jarauta ◽  
Maria Rosario Perez-Ruiz ◽  
Fernando Civeira
Keyword(s):  
Waist Circumference ◽  
Bioelectrical Impedance ◽  
Fat Distribution ◽  
Abdominal Fat ◽  
Sex Influence ◽  
The Relationship ◽  
Age And Sex
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