Body Composition

1
Body Composition

• Assessment and Interpretation

2
Body Build

• Muscularity (mesomorph)
• Linearity (ectomorph)
• Fatness (endomorph)

3
Body Composition for Men
4
Under Water Weighing
w Body density Body mass Body volume
w Body mass. Measured on land.

• Body volume
• Measured using hydrostatic (underwater) weighing
  
• Accounts for water density and air trapped in
  lungs

w 2-3 margin of error
5
Skinfold Fat Thickness

• Relationship between skin fold thickness and body
  density.
• From density, percent body fat is estimated.
• Equations need to be gender, age and race
  specific.
• 3-4 error
• Other errors?

6
(No Transcript)
7
(No Transcript)
8
Bioelectric Impedance

• Measurement of body water.
• Impedance or (resistance) decreases with body
  water.
• Assumption that body water is at a constant
  value.
• 3-4 error

9
Air Plethysmography
BOD POD

• Similar principle as UWW
• Air instead of water
• Comparison
• Error 2-3
• Costly
• Convenient for subject
• Low tech skills

10
Air Plethysmography
11
Duel-Energy X-Ray Absorptiometry (DEXA)

• Developed to measure bone density
• Can measure bone, non-bone, and fat density
• New gold standard?
• Comparison
• Error 1-5 (software)
• Very costly
• Very high tech
• Quick, subject friendly

12
Comparison of Techniques
13
References

• American College of Sports Medicine
• Costill, D., and Wilmore, J. Physiology of Sport
  and Exercise, (2000).

14

• PowerPoint Assignment due by Tuesday, October
  8th
• No more than 10 total slides.
• A Title Slide as the first page.
• Information slides (at least 3)
• Reference slide (list where information and files
  were obtained)
• Custom automation of slides
• Order and timing
• Effects
• Insert pictures (at least 1 each of the
  following)
• 1 from clipart
• 1 from a file (also could be hyperlinked)
• 1 from Autoshape
• Insert/hyperlink one movie
• Insert Sound (at least 1)
• Insert Chart (1 that applies to your information)
• Insert Table (1that applies to your information)
• 3 different font types
• 3 different font colors