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Energy expenditure of nonexercise activity
J A Levine1, S J Schleusner, M D Jensen
1Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA. levine.james@mayo.edu
The American Journal of Clinical Nutrition
|December 2, 2000
Summary
Fidgeting significantly increases energy expenditure, contributing to weight gain resistance. Self-selected fidgeting activities show substantial thermogenic potential, varying greatly among individuals.
Area of Science:
- Physiology
- Metabolism
- Energy Balance
Background:
- Nonexercise activity thermogenesis (NEAT) helps resist weight gain in sedentary adults.
- Fidgeting is a key, understudied component of NEAT and energy expenditure.
Purpose of the Study:
- To quantify the energy expenditure associated with fidgeting-like activities.
Main Methods:
- Indirect calorimetry measured energy expenditure in 24 subjects.
- Activities included resting, sitting, standing, fidgeting (seated/standing), and walking at varying speeds.
- A specialized facemask allowed for near-unrestricted movement.
Main Results:
- Fidgeting while seated increased energy expenditure by 54% (P < 0.0001).
- Fidgeting while standing increased energy expenditure by 94% (P < 0.0001).
- Significant positive correlation between energy expenditure and body weight during standing fidgeting (r=0.43, P=0.02).
Conclusions:
- Self-selected fidgeting exhibits significant individual variability in energy expenditure.
- Fidgeting and low-grade activities possess considerable thermogenic potential, impacting overall energy balance.