chapter 13 study guide part

chapter 13 study guide part - W hat is the Body mass index...

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What is the Body mass index? - Preferred weight for height standard- express the ration of a persons weight to the square of their height Calculate BMI: BMI= weight kg/ height (M)2 or BMI= weight in pounds x 704.5/ height inches (2) Weight and risk categories associated with BMI result - Risk for type 2 diabetes, high blood pressure, heart disease, and other diseases increases when BMI value is above 30. - Mortality rate increase above BMI value of 30, a higher or lower bmi increases the risk of dying prematurely - Underweight bmi less then 18.5 kg/m increases the risk for infections and illness due to weekend immune system, menstrual irregularities, and infertility in both men and women, also increased risk for premature death - Healthy weight 18.5- 24.9 kg - Overweight 25.0- 29.9 kg- moderate risk- increased risk for high blood pressure, heart disease, type 2 diabetes, sleep disorders, gallstones, gynecological abnormalities (many people who are overweight will eventually become obese) - Obesity: class 1(30.0- 34.9) high risk, class 2 35.0-39.9 very high risk, Class 3 40.0 or higher extremely high risk (morbidly obesity) hypertension, elevated cholesterol, dyslipidemia, type 2 diabetes, heart disease, stroke, gallbladder disease, osteoarthritis, sleep apnea, cancers such as breast, endometrial, gallbladder, menstrual irregularities, depression, gestational diabetes, premature death, neural tube defects, complications during labor and delivery What are the most accurate body mass composition assessments? Most accurate- skin folds, hydrostatic weighing, Bod Pod, DXA (most accurate) What % of body fat is risky for men and women?
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Men over 25% and women over 32% body fat there is a dramatic correlation with illness and disease What are the two body fat distribution patterns, who usually has them, and what do they mean in terms of risk? - Apple shapes fat patterning- upper body, mainly men and post menopausal women, increased risk 4 chronic diseases such as type 2 diabetes, heart disease and high blood pressure - Pear shaped fat patterning- lower body, no significant increased risk for chronic diseases, generally found in younger women Know the health risk measurement cut-offs for waist-to-hip ratio and waist circumference. Waist-to-hip ratio: 0.90 or higher in men, 0.80 or higher in women higher risk for chronic disease Waist circumference: 40 inches or higher in men, 35 inches or higher in women Measure waist at narrowest point, and measure hips at widest point What are the strengths and limitations of each of these assessment methods? - BMI Strengths- gives ratio for weight to height, accurately predicts health risks related to obesity in large groups of people - BMI Limitations- cannot indicate pattern of fat or amount of fat or lean body mass, Does not account for differences in gender, frame size, or activity level - Body Comp Strengths- if done right most accurate e way to measure body fat - Body Comp Limitations- can be expensive, equipment not always available - Fat patterning Strengths- tells us about persons body shape, can indicate if a person has a higher risk for chronic disease -
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