Body Comp Assesments 2 Flashcards
Field methods for body comp
Practical, time- efficient, portable alternatives
Field methods examples
Skinfold thickness assessment
Bioelectrical impedance analysis
Anthropomety
Skinfold method
Invasive
Indirect measure of subcutaneous fat
Assumption of skin fold method
SKF is a good measure ofsubcutaneous fat
Sub and internal fat distribution is similar for all of the same sex
Sum of SKF from multiple sites usable to estimate total body fat
Relationship exists between 3 SKF and Db
Age is independent predictor of Db for adults
Major source of error w SKF
Technician skill
Type of SKF caliper
Client factors
Basics of measuring skinfolds
Bioelectrical impedance analysis
Combination of low-level currents passed between electrode pairs
Tissues either interfere or conduct electrical currents
Total body water volume inversely related to resistance of currents
2 C model assumption regarding % water in FFB applies
BIA supine, tetrapolar
4 electrodes one on each hand and foot
BIA upper body
4 electrodes
2 per handle
Lower body
4 electrodes
2 per foot
Whole body vertical
8 electrodes
2 per hand 2 per foot
BIA sources of error
Analyzer used
Client factors
Technician skill
Environmental factors
FFM prediction equation
Anthropometric methods
Based on body size and proportions
Assist in classifying disease risk
Methods
Anthropometric methods-circumferences
Measures of girth
Affected by everything beneath the tape measure
Use anthropometric tape measure to increase accuracy
Anthropometric -Waist circumference
Measure of abdominal adiposity
No standard waist location
Anthropometric - waist to hip ratio
Indirect measure of fat deposition pattern
Anthropometric - waist to height ratio
Better adiposity indicator than waist circumference alone
Anthropometric sources of error
Equipment
Client factors
Technician skill
