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Clinical Relevance of BIA. “BIA is a simple in-office test that converts easily obtained electrical measurements into information about the patient’s body composition and fluid distribution ...” Robert Rakowski DC. STEP 1 Total Body Water/Fat Free Mass
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Clinical Relevance of BIA “BIA is a simple in-office test that converts easily obtained electrical measurements into information about the patient’s body composition and fluid distribution ...” Robert Rakowski DC
STEP 1 • Total Body Water/Fat Free Mass • This marker refers to the hydration of the patient. • Must be higher than 69% for a test to be valid. • If <69%, patient should be put on hydration protocol and retested in 24-48 hours. • Higher is typically better
STEP 1 (CONTINUED) • TBW/FFM • Percentage of fat-free mass that is water • Values below 69 indicate dehydration • Accurate even when subject is significantly overweight • TBW/Total Weight • Percentage of total weight that is water • Declines with age • Shows dehydration if person is significantly overweight.
STEP 2 • Phase angle • General indicator of cellular health • Provides info on cell membrane potential at the tissue level
Do You Believe in Miracles? • Lance Armstrong is monitored with the BIA during his preparation for the Tour • de France. • Dr. Jeff Spencer uses a variety of Metagenics products to keep his team • leading the world.
Cellular health tends to be correlated to a person’s phase angle Lance Armstrong Suboptimal
STEP 3 • Intracellular Water • Healthy cells maintain their integrity and hold their fluid inside • >60% is optimal. • Changes with age • Extracellular Water • Water volume outside of the body cell mass • Higher values may be related to fluid retention
STEP 4 • Fat Free Mass vs. Fat • Determine the amount of metabolically active tissue in the person. • Optimal range depends on sex and age of person. • BIA can determine both subcutaneous fat (Love Handles) as well as visceral fat found around the organs of the body. • Advantage over calipers to assess true health status.
STEP 5 • ECM/BCM • Ratio of extracellular mass (non-metabolically active) to body cell mass (metabolically active) • Low value is desirable • Upward shift suggests imbalanced weight loss. • Downward shift suggests balanced weight loss. • Use Body Composition Protocol to shift.
STEP 6 • Body Mass Index • BMI correlates with a person’s health. • Studies show even moderate BMI shifts mean health consequences. • Lower is better • Alter using Body Composition Program.
STEP 7 • Basal Metabolic Rate • BMR- is the amount of calories a person burns during a 24 hour period while at rest. • More lean body mass will increase the BMR • Higher is typically better. • Each person is very unique • Essential in establishing a proper body composition program.