Study: NCT02118675

Intervention type: OTHER
Intervention: Body Measurements
Description: 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. Your BMI will be calculated from these measurements.

Intervention type: OTHER
Intervention: Body Measurements
Description: 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. Your BMI will be calculated from these measurements.

Intervention type: OTHER
Intervention: Body Composition and Circumference measurements
Description: This test is to measure the amount of water in your body. After a fasting urine sample is collected, you will drink a glass of water that has been enriched with an atom called a stable isotope (deuterium). After you drink this non-radioactive heavy water, you will provide urine samples several times over the next 4 hours.

Intervention type: OTHER
Intervention: Body Composition and Circumference measurements
Description: This test is to measure the amount of water in your body. After a fasting urine sample is collected, you will drink a glass of water that has been enriched with an atom called a stable isotope (deuterium). After you drink this non-radioactive heavy water, you will provide urine samples several times over the next 4 hours.

Intervention type: OTHER
Intervention: Whole Body DXA scan
Description: 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. You will be carefully positioned on the table, and your legs will be placed together using two Velcro straps. A scanner emitting low energy X-rays and a detector will pass along your body. You will be asked to remain completely still while the scan is in progress. The scan takes approximately ten minutes.

Intervention type: OTHER
Intervention: Whole Body DXA scan
Description: 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. You will be carefully positioned on the table, and your legs will be placed together using two Velcro straps. A scanner emitting low energy X-rays and a detector will pass along your body. You will be asked to remain completely still while the scan is in progress. The scan takes approximately ten minutes.

Intervention type: OTHER
Intervention: Bioelectrical Impedance Analysis (BIA)
Description: 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 repeat this procedure on three different BIA systems.

Intervention type: OTHER
Intervention: Bioelectrical Impedance Analysis (BIA)
Description: 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 repeat this procedure on three different BIA systems.

Intervention type: OTHER
Intervention: BodPod
Description: This test will estimate the amount of fat mass and fat free mass in your body. You will be required to change into a swimsuit and swim cap that we will provide for this procedure. If your swimsuit meets the necessary criteria, you can bring and wear it for the procedure, or PBRC will provide one for you. You will step onto a scale for a quick weight measurement. Next, you will sit inside of the system like you are sitting in a chair. The door of the system will be closed, but you will have a window so that you can see outside of the system while the measurements are completed. The test will be completed in about 15 minutes.

Intervention type: OTHER
Intervention: BodPod
Description: This test will estimate the amount of fat mass and fat free mass in your body. You will be required to change into a swimsuit and swim cap that we will provide for this procedure. If your swimsuit meets the necessary criteria, you can bring and wear it for the procedure, or PBRC will provide one for you. You will step onto a scale for a quick weight measurement. Next, you will sit inside of the system like you are sitting in a chair. The door of the system will be closed, but you will have a window so that you can see outside of the system while the measurements are completed. The test will be completed in about 15 minutes.

Intervention type: OTHER
Intervention: Circumferences
Description: This test will measure the circumferences of your waist, hip, neck, arms, and legs and the lengths of your forearm, upper arm, thigh, and lower leg. The circumference measurements will be made by a trained observer using a calibrated tape measure and an automated circumference measurement device (KX-16). These measurements will be made in about 30 minutes.