Course Hero Logo

EXSC 191 Exam 2 Notes.docx - Chapter 18: Body Composition...

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 1 - 5 out of 24 pages.

Chapter 18: Body CompositionBody Composition-Refers to the relative amount of fat and fat-free tissues in the body-Fat and nonfat components of human bodyoPercent body fat (adipose tissue): proportional amount of fat in the body basedon total weightoLean body mass: body weight without body fatTypes and Functions of Fat-Essential fat:oLocated in nerves, heart, glands, and liveroNecessary for normal physiological functiono3% for meno12% for women-Storage fat:oVisceral (around organs) or subcutaneous (below the skin)oFunctions include:InsulatorEnergy substratePadding against physical trauma8-22% for me20-35% for womenRegional Fat Deposition: Visceral Fat-Visceral body fat poses greater health risks because it is more active and has greateraccess to the circulation-Increase risk to CVD and type 2 diabetesHow is Body Composition Related to Health?-Android pattern of obesityoFat is stored in upper body and around the waistoMost common in menoApple shape= higher health risk-Gynoid pattern of obesityoFat is stores in waist, hips, and thighsoMost common in womenoPear shape= lower health riskWaist-to-Hip Ration(pear vs. apple)-Abdominal obesity increases risk of:oHeart diseaseoHigh blood pressure
oCholesteroloDiabetesoCancersoEarly deathChronic Conditions of Overweight and Obesity-Cardiovascular disease-Diabetes-Cancers (breast, prostate, colon)-Joint problems and osteoarthritis-Sleep apnea-Gallbladder disease-Menstrual abnormalities-Difficulty with conception and pregnancyHealth Effects of Underweight-Loss of muscle mass and strength-Osteoporosis-Menstrual abnormalities that can lead to infertility-Sever underweight conditions may lead to:oHeart problemsoDigestive disordersoKidney damageoAnemiaoLethargyoMuscle weaknessoDry skinoCompromised immune functionUse of Body Composition Results-Serves as a baseline data for repeated testing-Provide motivation for goal setting-Provide awareness about health risksMethods used to Assess Body Composition-AnthropometryoBMI: ratio of a person’s weight to height squared (kg/m^2)1 kg = 2.2 lbs1 in: 2.54 cmEx: 170 lbs / 2.2 = 77.27 kg6 foot = 72 in72 in x 2.54 = 182.88 cm182.88 / 100 = 1.8288 m
(1.8288 m)^2 = 3.3445 m^2BMI= 77.27 kg / 3.3445 m^2 = 23.1oCircumferenceoWaist to hip ration-Skinfold technique-DEXA-Underwater weighing-Bod Pod-Bioelectrical Impedance Analysis (BIA)BMI ClassificationsBMIClassification< 18.5Underweight18.5 – 24.99Acceptable25 – 29.99Overweight30 – 39.99Obese>/=Sever ObesityBody Mass Index-Good estimate of body composition at population level but not at individual level-Does not take muscle mass into account-Does not equal to percentage of body fatWaist Circumference-Waist girth measurement-Inches at the smallest pointMenWomenDisease Risk for CVD< 35.5< 32.5Low35.5-4032.5-35Moderate>40>35HighWaist to Hip Ratio-Waist (inches) at smallest point/ Hips (inches) at largest point-Men-Women-Disease Risk-</= .95-</= .80-Very low-0.96-0.99-0.81-0.84-Low->/= 1->/= .85-highSkinfold Technique-measures thickness of skin at specific body sites to estimate toal body fat-7 sites:oChestoAxilla
oTriceps

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 24 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
Mr.Barth
Tags
strength training, muscular fitness

Newly uploaded documents

Show More

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture