Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Krause Ch.2
Energy
| Vocab. Word | Definition |
|---|---|
| activity thermogenesis (AT) | the energy expended during active exercise such as fitness and sports exercise and the energy expended during activities of daily living, referred to as nonexercise activity thermogenesis |
| basal energy expenditure (BEE) | the measurement of the basal metabolic rate extrapolated to 24 hours; usually expressed as kilocalories per 24 hours (kcal/24hours) |
| basal metabolic rate (BMR) | energy needed to sustain the metabolic activities of cells and tissues and maintain circulatory, respiratory, gastrointestinal, and renal processes; expressed as kcal/kg of body wt. per hours; measured in the morning 10-12 hours after ingestion of food |
| calorie | the amount of energy required to raise the temperature of 1ml of water at 15 degrees C by 1 degree C |
| direct calorimetry | a method for measuing the amount of energy expended by monitoring the rate at which a person loses heat from the body to the environment when placed inside a structure large enough to permit moderate amounts of activity. |
| doubly labeled water(DLW) | used to measure total energy expenditure in free-living people using two stable istopes of H2O deuterium [2H2O] and oxygen-18 [H2 18O'); the difference in the turnover rates of the 2 isotopes measures the CO2 rate- calc. TEE from CO2 rate |
| estimated energy requirement(EER) | the avg. dietary energy intake that is predicted to maintain energy balance in a healthy adult of a defined age, gender, weight, height, and level of physical activity consistent with good health; |
| excess postexercise oxygen consumption (EPOC) | 8% to 14% increase in metabolic rate for a period after exercise has ceased |
| facultative thermogenesis | a portion of the thermic effect of food; "excess" energy expended in addition to the obligatory thermogenesis- thought to be partially mediated by sympathetic nervous system activity |
| indirect calorimetry | a method for estimating energy production by measuing O2 consumption and CO2 production rather than by directly measuring the heat transfer;typically takes 30mins-1hr to complete |
| joule (J) | the measure of energy in terms of mechanical work; the amount of energy required to accelerate 1 Newton(N) a distance of 1m; 1kcal=4.184 kJ |
| kilocalorie (kcal or Cal) | 1000 calories; sometimes written as Calorie |
| metabolic equivalents (METs) | the measure of caloric expenditure by the amount of O2 consumed/minute/kg body wt; 1 MET=~3.5ml O2 consumed/kg body wt/minute |
| nonexercise activity thermogenesis (NEAT) | the energy expended during activities of faily living |
| obligatory thermogenesis | a portion of the thermic effect of food; the energy required to digest, absorb, and metabolize nutrients |
| physical activity level (PAL) | the ratio of total energy expenditure (TEE) to basal energy expenditure (BEE); PAL=TEE/BEE |
| resting energy expenditure (REE) | a measurement of the resting metabolic rate extrapolated to 24 hours; usually expressed as kilocalories/24 hours (kcal/24hrs) |
| resting metabolic rate (RMR) | the energy expended for the maintenance of normal ody functions and homeostasis; represents the largest portion of total energy expenditure;expressed a kcal/kg body wt/hr; may be 10-20% higher than BMR, |
| respiratory quotient (RQ) | the ratio of moles of CO2 produced to the moles of O2 consumed |
| thermic effect of food (TEF) | inc. in the energy expenditure associated with the processes of digestion, absorption, and metabolism of food; represents approx. 10% sum of the resting metabolic expenditure and the energy expended in phy. act.-includes facultative thermogenesis an |
| total energy expenditure (TEE) | the sum of basal energy expenditure, activity thermogenesis, and the thermic effect of food; the daily total energy expended by a person in 24 hours. |
Created by:
izzyann1031