Non-exercise activity thermogenesis (NEAT)

James A. Levine

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Non-exercise activity thermogenesis (NEAT) is the energy expended for everything we do that is not sleeping, eating or sports-like exercise. NEAT can be measured by one of two approaches. The first approach is to measure or estimate total NEAT. Here, total daily energy expenditure is measured and from it, the basal metabolic rate-plus-thermic effect of food is subtracted. The second approach is the factoral approach whereby the components of NEAT are quantified and total NEAT calculated by summing these components. The amount of NEAT that humans perform represents the product of the amount and types of physical activities and the thermogenic cost of each activity. The factors that impact a human's NEAT are readily divisible in biological factors such as weight, gender and body composition and environmental factors such occupation or dwelling within a "concrete jungle." The impact of these factors combined explains the substantial variance in human NEAT. The variability in NEAT might be viewed as random and unprogrammed but human data contradict this thesis. It appears that changes in NEAT accompany experimentally induced changes in energy balance and may be important in the physiology of weight change. NEAT and a sedentary lifestyle may thus be of profound importance in obesity.

Original languageEnglish (US)
JournalNutrition Reviews
Volume62
Issue number7 II
StatePublished - Jul 2004

Fingerprint

Thermogenesis
heat production
Sedentary Lifestyle
Weights and Measures
Basal Metabolism
thermic effect of food
basal metabolic rate
Biological Factors
Body Composition
sports
Occupations
Human Activities
energy expenditure
physical activity
energy balance
Energy Metabolism
anthropogenic activities
body composition
Sports
exercise

Keywords

  • Energy expenditure
  • Malnutrition
  • Obesity
  • Physical activity

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science
  • Nutrition and Dietetics

Cite this

Non-exercise activity thermogenesis (NEAT). / Levine, James A.

In: Nutrition Reviews, Vol. 62, No. 7 II, 07.2004.

Research output: Contribution to journalArticle

Levine, JA 2004, 'Non-exercise activity thermogenesis (NEAT)', Nutrition Reviews, vol. 62, no. 7 II.
Levine, James A. / Non-exercise activity thermogenesis (NEAT). In: Nutrition Reviews. 2004 ; Vol. 62, No. 7 II.
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