Body Composition, Circumference Measurements, Tissue Thickness Measurements
Conditions
Brief summary
The purpose of this study is to collect body composition data using bioimpedance analysis (Samsung) and DXA (GE Medical). Both of the methods are explained in more detail in section 5 of this consent. The data collected will help Samsung improve the products the company offers.
Detailed description
If you are eligible and you choose to participate in this study, you will be asked to come to the Bone & Joint Clinic of Baton Rouge in Baton Rouge between 7:00 and 11:00 am after at least a two-hour fast (nothing to eat or drink besides water for 2 hours prior to your appointment). You will be asked not to exercise, shower, or use a steam room or sauna at least two hours prior to evaluation. The study visit will take approximately one hour. During the visit, you will complete the informed consent process and then complete the baseline body measurements and body composition procedures immediately afterwards. Adult pre-menopausal women will have a urine pregnancy test prior to evaluation. Study procedures are not for diagnostic or treatment purposes and the DXA scan is intended for research purposes. Description of study procedures Body Measurements (about 15 minutes): A series of body measurements will be taken by trained staff. These measurements include height, weight, and vital signs. The weight and height measurements will be completed twice during this time. The subject will wear a hospital gown and tight fitting garments for these procedures and the subject's BMI will be calculated from these measurements. Body Composition Measurements Whole Body DXA Scan, about 20 minutes This scan measures the amount of bone, muscle, and fat in your body. The scan will be performed using a whole-body scanner. The subject will be required to wear a hospital gown, to remove all metal-containing objects from the body, and to lie down on the table. The subject will be carefully positioned on the table, and the legs will be placed together using two Velcro straps. A scanner emitting low energy X-rays and a detector will pass along the body. The subject will be asked to remain completely still while the scan is in progress. The scan takes approximately ten minutes. Impedance Analysis (BIA) (about 10 minutes): These tests will measure the amount of fat in the body. These procedures will vary depending on the measurement system and several different BIA systems will be used during this test. Some examples are presented in the supplementary material at the end of this protocol. Specifically, the following systems will be used in this study: Samsung Health Cover; Measure 3 times; Standing Posture Marketed systems: InBody720 (http://www.biospaceamerica.com/Product/ib720.html; measure one time; Standing Posture Omron 306; Measure 1 time; Standing Posture Omron 510; Measure 1 time; Standing Posture
Interventions
OTHERBody Measurements
A series of body measurements will be taken by trained staff. These measurements include height and weight. These measurements will be completed twice during this time. You will wear a hospital gown and bathing suit for these measurements.
OTHERWhole Body DXA Scan
This scan measures the amount of bone, muscle, and fat in your body. The scan will be performed using a whole-body scanner. You will be required to wear a hospital gown, to remove all metal-containing objects from your body, and to lie down on the table.
These tests will measure the amount of fat in your body. You will be asked to change into a hospital gown and to remove all footwear and socks/stockings. Once changed and barefoot, you will be asked to stand on a scale (similar to a large gym scale) and to hold on to hand electrodes on each side of the scale. You will be asked to step off of the scale once the measurement is complete (less than one minute). You will also hold on to hand electrodes for three other BIA systems.
OTHERadd name here
Sponsors
Samsung
Pennington Biomedical Research Center
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
10 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
* Being either male or female * Being from 18 to 80 years of age * Being considered underweight, normal weight, overweight, or obese based on specified BMI ranges * Having a body weight of less than 440 pounds * Being willing to comply with the study procedures * Females must not be pregnant, breastfeeding, or planning to become pregnant within the next 6 months.
Exclusion criteria
* Being Asian. Note that Asian subjects have already been evaluated as part of the Korean phase of this investigation. * Having a significant chronic disease as judged by the investigator * Having metal-containing objects in your body * Being pregnant or attempting to become pregnant * Having medical implants such as a pacemaker or metal joint replacements * Being a professional athlete or someone with severe edema or dehydration * Having a body weight greater than 440 pounds * Being a body builder as judged by the investigator * Adults unable to consent * Prisoners
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Calibrate the Samsung BIA System by collecting body composition using two different methods and 5 different equipment | First Visit (Only one visit) | The study will be conducted in two overlapping phases. In Phase I, approximately 300 adult subjects (\>18 to 80 yrs, equal numbers of female and male) will be recruited to take part in this study as detailed below: (1) Underweight (BMI\<18.5 k/m2), 50 subjects. (2) Normal-Overweight (18.5-30), 150 subjects. (3) Obese (\>30), 100 subjects. Phase II, planned to start later this spring and summer, will involve evaluation of children and 100 subjects (10-\</=18 yrs, equal numbers of female and male) are planned in this phase as: (1) Normal-Overweight (18.5-30), 50 subjects. (2) Obese (\>30), 50 subjects. An addendum describing details of this study phase will be forthcoming. Informed consent for both adults and children will be obtained for this study. Written and verbal assents for children will be obtained for this study. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Improve the BIA body composition predictions using circumference and tissue thickness measurements | First Visit (Only one visit) | Part II: Verify developed algorithms: * Task A: Body Fat Analysis * Task B: Body Muscle Analysis * Task C: TBW (total body water), ICW (intracellular water), ECW (extracelluar water) |
Countries
United States
Outcome results
None listed