8/18 Metabolism Flashcards
Why is the BMI not the same indication of body composition for elder patients
As we age we gain more fat tissue as a percent of body mass
Why does a high fat individual have a different matoboloc need than a high muscle individual with the same BMI
Adipose tissue is only about 25 % metabolic active!
How can we estimate the approximate metabolic need of an obese patient (how correct for low adipose metabolism)
Difference do the ideal and the actual body weight and then multiply by .25 and add to the ideal weight to get an adjusted weight to calculate metabolic meeds from!
How does the shape of a patient indicate the risk of adverse events?
Fat in the middle indicates ( Apple shape) a higher visceral fat content and therefore more fat Aron’s the internal organs which is dangerous
What is the ideal diet for losing fat
All of the rested diets are about the same and the only factor is the number of calories hat are consumed
Why would a waist to height be used in place of a BMI
Better indication of cardiomiapathy effective for men and women and different ethnics and simple measure! Greater than .5 is bad.
How is the two component model used to calculate the metabolic requirements
The to component model for body composition indicates that the body is made up of fat mass and fat-free mass the amount of fat free mass is fairly consistent between different people it is the fat mass that differs dramatically The resting energy expenditure Harlen it’s well with the amount of fat free mass but not so much with the amount of total body weight
How do the roles of different dietary fuel differ from each other
There are three basic types dietary lipids dietary carbohydrates in dietary proteins. The majority of the energy stored in our body is lipids in the form of chai glyceride the amount of carbohydrates. Somatically based on activity and proteins are not primarily used for energy storage but have other functions
Why use BMI at all
BM I relates body weight to surface area for it is an index of roundness it correlates with total body fatness
How do you apply BMI to give useful info
Standard values of DM nine for adults are as follows a BMI below 18.5 kg/m² is underweight 18.5 to 24.9 kg/m² his normal 25 to 29.9 kg/m² is overweight and more than 30 kg/m² is obese
What limitations of BMI
Body composition differs with age and with gender and with ethnicity and BMI is a poor indication of these differences
How does waist circumference affect health risks …why?
Play circumference is known to correlate with diabetes hypertension and heart disease this is probably because it is a good measure of visceral abdominal fat
What are general homeostasis mechanisms for body composition?
The general features are in one sensors to signaling molecules often hormones three receptors for the signals for response mechanisms and five feedback regulation
