The lead researcher and a research assistant conducted parental anthropometric measurements at each assessment time. This consisted of measuring height and weight (to calculate BMI), and waist circumference. Weight was measured using a SECA 803 digital floor scale (SECA, Chino, CA, USA), and height was measured using the SECA 207 mechanical stadiometer (SECA, Chino, CA, USA; at the host institution), or the SECA 217 portable stadiometer (SECA, Chino, CA, USA; for at-home follow-ups). Waist circumference measurements were obtained following Heart and Stroke Foundation [49 ] guidelines, whereby the measuring tape is placed at the midpoint between the bottom of the ribcage and the iliac crest along the ancillary line.
217 portable stadiometer
Manufactured by Seca
Sourced in United Kingdom
The SECA 217 is a portable stadiometer, a device used to measure an individual's height. It features a foldable design for easy storage and transportation, and its measuring range extends from 20 to 205 cm. The SECA 217 provides accurate height measurements in a convenient and compact format.
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4 protocols using 217 portable stadiometer
1
Parental Anthropometric Measurements
2
Longitudinal Growth and Maturation
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Height, sitting height, and body weight were measured in t-shirt, shorts, and bare feet using a stadiometer (Seca, Seca217 portable stadiometer, Hamburg, Germany) with accuracy of 0.1 cm and an electric scale (TANITA BC-418 MA Segmental Body Composition Analyser; Tanita Corporation, Tokyo, Japan) with an accuracy of 0.1 kg.
All measurements were administered by the same investigator every year.
Age of menarche was determined by questionnaire or email during the followup. Biological maturity was assessed using the offset equation [17] (link). Based on this equation, the year(s) to/from PHV and an estimation of the age at PHV were predicted in all participants at one-year interval.
All measurements were administered by the same investigator every year.
Age of menarche was determined by questionnaire or email during the followup. Biological maturity was assessed using the offset equation [17] (link). Based on this equation, the year(s) to/from PHV and an estimation of the age at PHV were predicted in all participants at one-year interval.
3
Anthropometric Measurements in Adolescents
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Height was measured without socks and shoes using a calibrated vertical Seca Portable 217 Stadiometer (Seca, United Kingdom), and rounded to the nearest millimeter. Weight was measured with light clothing using a Seca 813 digital electronic weighing scale (Seca, United Kingdom), and rounded to the nearest decimal fraction of a kilogram. Body mass index was calculated as weight in kilograms divided by height-squared in meters. Body-fat composition was estimated with bioelectrical impedance using a Tanita portable scale (SC- 240, Body Composition Analyzer, Tanita Europe B.V., The Netherlands). The Body Composition Analyzer SC–240 has acceptable accuracy compared to the dual-energy X-ray absorptiometry in white and African-American adolescents36 (link). Waist circumference was measured with a non-elastic Seca measuring tape (Seca 201, Seca, UK), to the nearest millimeter. Waist circumference measurement was done at the natural waist which is the midway between the lowest rib margin (tenth rib) and highest point of the iliac crest with the tape around the body in horizontal position37 . Trained research assistants did all the measurements.
4
Anthropometric Measurements in MyHeARTs Study
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Measurements of these parameters were performed by trained personnel including body weight (kilograms), height, and waist and hip circumferences as per MyHeARTs study protocol (21 (link)). Height was measured without socks and shoes using a calibrated vertical Seca PorTable 217 Stadiometer (Seca, United Kingdom). Weight was measured with light clothing using a Seca 813 digital electronic weighing scale (Seca, United Kingdom). Both WC and HC were measured with a non-elastic Seca measuring tape (Seca 201, Seca, UK), to the nearest millimeter. A portable body composition analyzer (Tanita SC-240 MA, Body Composition Analyser, Tanita Europe B.V., The Netherlands) was used to measure % BF. BMI was calculated as baseline body weight divided by height squared (kilograms per square meter). WHR was calculated as WC divided by HC (WC/HC). BMI was classified according to the World Health Organization criteria (26 (link)). For this study, adiposity parameters examined were BMI, WHR as measure of central adiposity, and % BF.
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