Participant sex, ethnicity, family income-to-needs ratio, and standardized BMI (zBMI) were statistically controlled in all analyses. Parents reported ethnicity and family income, and the latter was used to calculate income-to-needs ratio. A Tanita digital weight scale (Model BC-418) and wall-mounted stadiometer (Arlington Heights, IL) were used to collect adolescent weight and height respectively for assessing BMI. Standardized BMI was calculated using a SAS program developed by the Centers for Disease Control (33 ).
Model bc 418
Manufactured by Tanita
Sourced in Japan
The Tanita BC-418 is a multi-frequency segmental body composition analyzer that measures body weight, body fat percentage, muscle mass, and other body composition metrics. It utilizes bioelectrical impedance analysis (BIA) technology to provide detailed body composition data.
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Lab products found in correlation
11 protocols using model bc 418
1
Adolescent Anthropometric Measures and Controls
2
Anthropometric and Body Composition Assessment
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Trained clinical staff measured Height, body mass, and waist circumference. BMI was calculated using body mass and height (kg/m2) and BMI percentile was calculated using growth charts from the Centers for Disease Control and Prevention [24 ]. Total body and regional fat and lean tissue were measured using bioelectrical impedance (Model BC-418, Tanita Corporation, Arlington Heights, IL).
3
Anthropometric Measurements Protocol
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Body mass (kg) and body composition were measured using a calibrated bio-electrical impedance analysis scale (Model BC-418, Tanita Inc., Arlington Heights, IL, USA) with participants wearing minimal light-weight clothing. Height (m) was measured using a wall-mounted stadiometer. BM and height were used to calculate BMI. Waist circumference was measured using a measuring tape placed at the narrowest part of the torso.
4
Adolescent Body Mass Index and SES
5
Adolescent Socioeconomic Status and zBMI
6
Anthropometric Measures for Child Health
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Anthropometric data were collected by trained research staff using standardized protocols [26 ]. Briefly, students’ height was measured to the nearest 0.1 cm by use of a portable stadiometer (Surgical and Medical PE87) and a TANITA Body Composition Analyzer (Model BC 418, Wedderburn, Australia) was used to measure body weight. Other anthropometric measures included body composition (percentage body fat), BMI (weight in kg/height in m2) and BMI-z score, calculated using the World Health Organization (WHO) Reference 2007 [2 ]. Weight status was determined using BMI z-scores in accordance with WHO standards for children aged 5 to 19 years which states that thinness is equivalent to a BMI z-score <-2SD, normal weight is defined as the range between ≥-2SD and ≤+1SD BMI z-score, overweight is classified as the range between >+1SD and ≤+2SD, and obesity >+2 SD [2 ].
As less than 2% of participants were classified in the thinness range, normal weight and thinness were combined.
As less than 2% of participants were classified in the thinness range, normal weight and thinness were combined.
7
Adolescent Body Mass Index Factors
8
Comprehensive Body Composition Assessment
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Weight, height, waist circumference, and body composition are measured by study personnel at baseline and at 3- and 6-month follow-ups. Weight is measured to the nearest 0.1 kg in light clothing without shoes, and height is measured to the nearest cm in a standing position. Waist circumference is measured around the waist, approximately 2 cm above the umbilicus, to the nearest cm. Body weight and waist circumference are measured once on each occasion. Body composition, including body fat and fat-free mass, is measured using a digital body composition analyzer, Model BC-418 (Tanita). The scale utilizes an 8-electrode bioelectrical impedance analysis with current going from foot to hand and from hand to foot on both sides of the body.
9
Anthropometric Indices and Body Composition
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We calculated BMI as weight divided by height squared (kg/m 2 ) and we measured WC with a Seca automatic roll-up measuring tape (precision of 1 mm) using the horizontal plane midway between the lowest rib and the upper border of the iliac crest at the end of a normal inspiration/expiration. Hip circumference was measured at the maximum extension of the buttocks as viewed from the right side. WHR and WHtR were consequently calculated by dividing the WC by the hip circumference and the height, respectively. We determined BF% using bioelectrical impedance analyses (BIA) by whole-body impedance (Tanita Model BC-418®, Tokyo, Japan). Detailed information about the BIA technique has been provided in previous studies. 21 (link) The rest anthropometric indexes (AVI, BRI, BAI, BAIp, C-Index, and ABSI) were calculated using the following formulas: AVI = [2Waist Circunference 2 (cm) + 0.7(Waist Circumference -Hip Circumference) 2 (cm)]/ 1000 (Guerrero-Romero et al. 17 ) BRI = 364.2 -365.5 [1 -π -2 Waist Circunference 2 (m) Height -2 (m)] 1/2 (Thomas et al. 10 ) BAI = [Hip circumference (m)/Height 2/3 (m)] -18 (Bergman et al. 14 ) BAIp = Hip circumference (cm)/height (m) 0.8 -38 (El Aarbaoui et al. 15 ) (Valdez 22 ) ABSI = WC (m)/ [BMI 2/3 (kg/m 2 )Height 1/2 (m)] (Krakauer et al. 9 )
10
Body Composition Analysis Protocol
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Body composition of the subjects was measured using bio-electric impedance analyzer (Model Tanita® BC-418®, Tokyo, Japan) with a range of 0–200 kg and with an accuracy of ~ 100 g.
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