Assessment of Body Size and Composition Flashcards
3 reasons to worry about body size, composition and weigh
- medical/health reasons
- sport/physical performance
- appearance
What are the 3 body somatotypes
endomorph, mesomorph, ectomorph
endomorph
rounder, carry more body fat, round/apple type, fat around abdomen
mesomorph
muscular, broad shoulders/hips
ectomorph
long and lean
essential fat
-fat in organs, muscle, CNS, bone marrow and sex-specific essential fat necessary for survival
storage fat
-energy reserve includes visceral adipose tissue and larger subcutaneous depts
total body fat
essential fat + storage fat
lean body mass
the combined weight of the internal organs, bones, muscles, water ligaments and tendons plus the weight of the essential fat in the organs, CNS and bone marrow
fat free mass
the weight of the essential fat is subtracted from lean body mass
storage fat average for young men
12%
essential fat average for young men
3%
storage fat average for young women
15%
essential fat average for young women
12%
what is suggested “healthy” lower level % fat in males?
3%
what is suggested “healthy” lower level % fat in females?
12%
3 components of female athlete triad
- disordered eating
- amenorrhea
- osteoporosis
some indirect methods of measuring body comp
- hydrostatic weighing
- air displacement
- skinfolds
- girth measurements
- bioelectrical impedance analysis
- ultrasound
- magnetic resonance imaging
- computed tomography
some factors that influence RMR
-weight, age, gender, genetics, ethnicity, fitness level, body temp, growth/pregnancy, hormones
what do you need to estimate RMR?
- weight
- height
- FFM
- age
Harris Benedict Equation for men
66.5 + 13.8(kg) + 5(cm) - 6.8 (age)
Harris Benedict Equation for women
665.1 + 9.6(kg) + 1.8 (cm) - 4.7 (age)
Activity level of 1.0
- rest
- sleeping, sitting still
Activity level of 1.5
- very light
- cooking, office work activities
