Lecture 3 Flashcards
(15 cards)
Why study body comp?
Performance, Health status, changes in body comp, evaluate treatments
What are the two types of compartment models?
Anatomical and Chemcial
Within chemical what are the 3 types of compartment models and what are their components?
2 Component: Fatmass/Fat Free Mass
3 Component: Fatmass / Bone Mineral/ Other lean mass
4 Component: Fatmass / Water/ Protein/ Other
What are essential lipids?
Compound lipids needed for cell membrane formation
What is FFM aka FFB?
Free Fat Mass aka Fat Free Body - All residual lipid free chemicals and tissues
What is lean body mass?
FFM + Essential Lipids
In BIA if you want to have more resistance do you want to have more or less water?
Want to have less water if you want more resistance
What are issues associated with BIA?
The grasping cylinders have different resistance based on size
Our extremities have more impact than visceral fat
Hydration and temp factor in
Position of extremities
What compartment model is dexa (incl the components) and what does it not read properly
Dexa is a 3 compartment (FFST/BM/FM) but does not read visceral/intraabdominal fat properly
Looking at fat removal studies what is more effective, removing subcutaneous fat or visceral fat? Why?
More effective to remove visceral fat, studies have shown positive metabolic changes associated with removal of visceral fat where there have been no metabolic changes with subcutaneous
Does subcutaneous fat predict mortality?
No
Describe the athlete paradox in regards to skeletal fat
Athletes can have just as much skeletal fat as obese people, what is different is the quality of the fat, the lipid droplets are much smaller but there are many more. This allows for more utilization of the fat cells during exercise, with more small droplets there is an increase in mitochondria size showing the utilization of the droplets.
What is the difference between White and Brown adipose tissue?
WAT:
-Energy storage, insulation, protection, endocrine role
-When hypertrophied they become insulin resistant and cause inflammation when dead
BAT:
-Produce heat w/o shivering
-Highly vascularized and much mitochondria (causes brown color)
-Found in the old, fat and cold exposed
-subcutaneous and visceral
What are the 2 major bad things about hypertrophied WAT cells?
Insulin resistant and cause inflammatory response upon necrosis
Where is Beige fat found?
Supraclavicular region
