Daily Total Energy Expenditure - Basal Energy Expenditure in resting and Activity


Daily energy expenditure is the sum of:
  • the basal metabolic rate (BMR)
  • the thermic effect of food eaten
  • occupational activities
  • non-occupational activities.

Total energy expenditure can be measured using a double-labelled water technique. Water containing the stable isotopes 2 H and 18 O is given orally. As energy is expended carbon dioxide and water are produced. The difference between the rates of loss of the two isotopes is used to calculate the carbon dioxide production, which is then used to calculate energy expenditure. This can be done on urine samples over a 2- to 3-week period with the subject ambulatory. The technique is accurate, but it is expensive and requires the availability of a mass spectrometer. An alternative tracer technique for measuring total energy expenditure is to estimate CO2 production by isotopic dilution. A subcutaneous infusion of labelled bicarbonate is administered continuously by minipump and urine is collected to measure isotopic dilution by urea, which is formed from CO2 . Other methods for estimating energy expenditure, such as heart rate monitors or activity monitors, are also available but are less accurate.

Energy Expenditure

Energy Stores

Basal Metabolic Rate

Recommended healthy diet

Dietary requirements


Share |

Related Articles on Nutrition
Recurrent Gallstones
Vitamin and Mineral Supplements: Use With Care
Dietary requirements
Nutrition and Ageing
Water and electrolyte balance
Food allergy and food intolerance
Protein-energy malnutrition
Energy Expenditure
Basal Metabolic Rate
Recommended healthy diet
Energy Stores
Osmotic pressure
Plasma osmolality
Illness and Diet
When to eat what?
Take a cold bath
Rules for health protection
Characteristics of good health
Diet during Winter Alteril
Vitamin Cottage
Arbonne Vitamins
B12 Solgar Vitamin
Benefits of Resveratrol
Does Hydroxycut Work
Kombucha Danger
Hydroxycut Medical Side Effects
Miracle Mineral Supplement
Solgar Vitamin D 1000 IU
Sources of Vitamin D
Swanson Vitamins
What is a Good Vitamin for My Teenager to Take?
Two Main Vitamins in Sweet Potatoes
Vitamins for COPD
Using Kefir to Treat Candida Yeast
Vitamin B12 Cereals
Vitamin K Cream
Vitamin Shoppe
Vitamin Water
Vitamin World

Nutrition - Vitamins | Amino Acids | Herbs | Minerals | Nutrients | Supplements | Enzymes
Wellness - Healthy Living | Dental Care | Products | Skin Vitamins | Ayurveda | Slideshow
Health - Deficiency | Alternative Medicines | How To | Symptoms | Food Kitchen How tos?
Fitness - Exercises | Gardening
Food & Cooking - Recipes | Fruits & Vegetables
Healthy Eating & Diet - Diet | Weight Loss | Green Tea | Noni Juice | Acai
Online Vitamins Guide

Nutrition Articles | Your Feedback & Suggestions | Newsletter
Disclaimer | Blog
Home © 2001-2013 online-vitamins-guide.com. All rights reserved.