Physical Actiity + Energy Expenditure Flashcards
(28 cards)
two methods of measuring body’s heat production
direct calorimetry, indirect, doubly labeled water technique
three benefits of activity
weight, lower blood pressure, lower chance of heart disease, lower stress, lower chance of death
measuring body heat by a chamber that measures change in heat
direct calorimetry
measuring body heat by measuring oxygen use
indirect calorimetry
two types of indirect calorimetry
spirometry, gas analysis
measures heat production by using a radioactive isotope to measure how water is used during activity
doubly labeled water technique
measure of all metabolic processes occurring in the body
total daily energy expenditure
energy expenditure factors percentages
resting metabolic rate 65-75%
thermogenic effect of food 10%
physical activity 10-35%
five factors affecting TDEE
physical activity, diet induced thermogenesis, calorigenic effect of food on exercise metabolism, climate, pregnancy
extreme temperatures either hot or cold cause blank energy expenditure
increased
describes the ratio of metabolic gas exchange
RQ = CO2 produced / O2 consumed
respiratory quotient
respiratory quotient provides us with an idea of what blank are being used for energy during rest and exercise
nutrients
RQ for carbs
6 C / 6 O = 1
RQ for fats
16 C / 23 O = .7
RQ for proteins
63 C / 77 O = .818
a respiratory quotient does not include blank because they arent used for energy
protein
more blank are burned at rest than blank
fats, carbs
exchange of carbon dioxide and oxygen during different physiologic conditions…. = volume of CO2 / volume of O2
Respiratory exchange ratio
RER can rise above blank or fall below blank
1, .7
minimum level of energy to sustain vital functions in the waking state… reflects body’s total heat production
basal metabolic rate
slightly higher than BMR depending on body size, muscle mass, age, fitness
Resting metabolic rate
BMR and RMR is blank in tall, muscular, younger, men
highest
regular exercise stimulates an increase in blank
RMR
1 pound gain in fat free mass increases RMR by blank kCal daily
7-10