4910: C12 Flashcards
adaptive thermogenesis
Energy expenditure above the thermic effect of food & REES, seen in response to over feeding, injury, hormonal changes, & cold environment.
kilojoule
Measurement of energy, the amount of work required to move one kilogram 1 meter with the force of one newton.
To convert height in inches to height in meters
inches x 0.0254 = meters
lb to kg conversation
lb / 2.2 = kilograms
Adverse health consequences of Overweight & Obesity
Type 2 Diabetes, HBP, Lipid Abnormalities, hepatobiliary disorders, cancers, reproductive disorders, premature death.
Rick factors for NAFLD
central obesity, DM2, hyperlipidemia, metabolic syndrom
When should phramacologic treatment be used for obesity?
BMI ≥ 30 or ≥ 27 if other risk factors exist.
BMI at which surgery is called for
BMI ≥ 40, or BMI ≥ 35 & sleep apnea, CVD, or DM
ascites
build up of fluid in the peritoneal cavity.
Physical activity goals
150 minutes (2hours 30minutes) of moderate-intensity, or 75 minutes of vigorous
BEE
Basal energy expenditure. Approx. 60%. Usually substitute REE or RMR which are approx. 10% higher than BEE
PA
physical activity - most variable
TEF
thermic effect of food. Approx. 10%
TEE
Total Energy Expenditure. BEE + PA + TEF = TEE
Resting Energy Expenditure
The energy necessary to sustain life & organ function, accounts for approx. 60% to 75% of energy expenditure per day. Is roughly 1kcal/kg body wt/hr.
Factors that affect REE
Lean body mass, male gender, body temp, age, energy restriction, genetics & endocrine system/hormonal influence
Indirect calorimetry
Measures O2 consumption, CO2 production and minute ventilation (MV) to determine energy needs.
Harris Benedict Equation (REE)
Derived from healthy adults, calculates REE, additional stress & activity factors added.
The quick easy way to determine kcal/day
20 to 25 kcal/kilo. 25 to 30 kcal/kilo if stressed, illness, OR Current weight(lb) x 10 kcal/lb, the account for METS
Harris Benedict Equation stress/PA factor
REE x 1.1-1.2 for activity or x 1.1-1.5 for illness or stress.
Harris Benedict Equations
Males: 66 + [13.7 x wt(kg)] + [5 x ht(cm)] - [6.8 x A] = kcal/day. Females: 655 + [9.7 x wt(kg)] + [1.8 x ht(cm)] - [4.7 x A] = kcal/day.
Mifflin St. Jeor
Best predictor for healthy overweight or obese (non critically ill). Males: 10W(kg) + 6.25H(cm) - 5A +5. Females: 10W + 6.25H - 5A -161.
calories per minute
Cal/hr/60 = cal/min
Calories burned equation
Cal/min x # of min of activity = cal burned.