A standardized medical and physical examination was performed to obtain demographic, anthropometric, physiological, and gynecologic measures, familial history of diseases, and menstruation patterns as described previously [25 (link),34 (link)]. Weight and height were measured using a mechanical weight scale (model 160KL; Health-O-Meter Inc., Bridgeview, IL, USA) and a portable stadiometer (Seca 208; Vogel and Halke, Hamburg, Germany). BMI was calculated using the formula: (body weight (kg)/(height squared) (m2). Waist circumference (WC) was measured following the World Health Organization (WHO) Waist Circumference Expert Consultation on Waist Circumference protocol [35 ]. Body composition was evaluated from whole-body scans by dual-energy X-ray absorptiometry (QDR Discovery Wi; Hologic Inc., Bedford, MD, USA). The coefficients of variation for total body fat mass, lean tissue, and trunk fat mass were 3.0%, 0.5%, and 5.0% respectively. Blood pressure was measured with a sphygmomanometer and a stethoscope (Littmann Master Classic, 3M Health Care, St. Paul, MN, USA).
Qdr discovery wi
Manufactured by Hologic
Sourced in United States
The QDR Discovery Wi is a bone densitometry system designed for the assessment of bone mineral density. It utilizes dual-energy X-ray absorptiometry (DXA) technology to measure the density of bone tissue, providing accurate and reliable information about an individual's bone health.
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Lab products found in correlation
6 protocols using qdr discovery wi
1
Comprehensive Health Assessment Protocol
2
Body Composition Assessment by DXA
3
DXA Evaluation of Body Composition
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DXA is a common measurement of human body composition based on a three-compartment model. It divides the body into total body mineral, fat-free soft mass, and fat tissue mass. Body composition was evaluated by DXA with the use of a Hologic densitometer (QDR Discovery Wi, Hologic Inc., Bedford, USA). Measurements were taken with the patient lying in the supine position on the scanning table. Scanning time was approximately 20 minutes. By means of the appropriate software, information on the body composition was obtained from the whole body scan.
4
Body Composition Assessment Using DEXA
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BMD (g/cm2) of the proximal femur (total hip and femoral neck) and fat
mass (kg), visceral adipose tissue, and muscle mass were assessed using
dual-energy X-ray absorptiometry (DEXA; Hologic QDR Discovery Wi; software
version 12.0). The examinations were performed by trained technicians who were
blinded to the participant group. The coefficients of the DEXA measures were
1–1.5%.19 (link) We followed fat mass, visceral adipose tissue, and
muscle mass at baseline and 1 year later.
mass (kg), visceral adipose tissue, and muscle mass were assessed using
dual-energy X-ray absorptiometry (DEXA; Hologic QDR Discovery Wi; software
version 12.0). The examinations were performed by trained technicians who were
blinded to the participant group. The coefficients of the DEXA measures were
1–1.5%.19 (link) We followed fat mass, visceral adipose tissue, and
muscle mass at baseline and 1 year later.
5
Body Composition Assessment Protocol
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To measure height, participants were required to stand on the height scale with bare feet and look straight. Centimeters were used as the unit of height, and the value was specified to only one decimal place. Body weight was measured in kg with a body composition analyzer (MC-980A, Tanita, Tokyo, Japan). Participants were required to wear light clothes and remove their shoes before measurement. Considering the weight of the clothes, 0.5 kg was subtracted from the obtained body weight and specified to only one decimal place. BMI (kg/m2) was calculated as body weight divided by height squared. Dual-energy X-ray absorptiometry (DXA, QDR Discovery Wi, Hologic, Tokyo, Japan) was performed by a clinical technician in a dedicated room, which was quiet and dark. Data regarding body fat, bone area, bone mineral density, lean mass, fat mass, bone mass, and body mass (the sum of the lean mass, fat mass, and bone mass) were obtained at baseline and after the intervention. Participants were required to fast for 10 h in preparation for DXA assessment, wear light clothes, remove their shoes, and lie in a supine position on the DXA machine for 7 min. Appendicular lean mass index (kg/m2) was calculated as the sum of lean mass in both arms and legs divided by the square of the height.
6
Body Composition Assessment via DXA
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DXA was used to assess body composition. A total body scan was taken in array mode by a certified technologist (QDR Discovery Wi; Hologic, Inc., Bedford, MD, USA) and scans were analyzed using QDR software for Windows XP (QDR Discovery, Hologic, Inc.) to assess total lean mass (g) and total fat mass (g), which were then used to calculate total % lean mass and total % fat mass.
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