Seasonal variation of non-shivering thermogenesis (NST) during mild cold exposure
Nishimura T, Motoi M, Egashira Y, Choi D, Aoyagi K, Watanuki S
Journal of physiological anthropology · 19 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Mechanisms only
Who paid for it
- Funding
- Independent funding
- Government
- Japan Society for the Promotion of Science
- Grants
- Japan Society for the Promotion of Science (23247044); Japan Society for the Promotion of Science (15K18623); Japan Society for the Promotion of Science (26251050)
Based on 1 listed funder(s).
Publication
- Published
- 2015-03-12 · J Physiol Anthropol · vol. 34 · issue 1 · p. 11
- Publisher
- BioMed Central
- Cited
- 28 citations · more than 90% of similar papers · 2.7× the field average
- Impact
- Top 10% most cited in its field
- References
- 20 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Thermal Regulation in Medicine · High Altitude and Hypoxia · Thermoregulation and physiological responses
- Keywords
- Shivering, Thermogenesis, Acclimatization, Seasonality, Animal science, Biology, Physiology, Endocrinology, Botany, Obesity, Ecology
- MeSH
- humans, electromyography, body temperature, analysis of variance, seasons, acclimatization, oxygen consumption, thermogenesis, adult, male, cold temperature, young adult
6 authors
From JP
- Takayuki Nishimura · correspondingNagasaki University
- Midori MotoiKyushu University
- Yuka EgashiraKyushu University
- Damee ChoiKyushu University
- Kiyoshi AoyagiNagasaki University
- Shigeki WatanukiKyushu University
Abstract
Background
The physiological function of non-shivering thermogenesis (NST) has been investigated in recent years, and some studies have discussed the importance of NST with respect to human cold adaptation. The present study aimed to clarify individual and seasonal variations in NST that occurred as a result of mild cold exposure.
Methods
Seventeen male university students participated in the present study during summer and winter. The climate chamber used was programmed so that ambient temperature dropped from 28°C to 16°C over an 80-min period. Physiological parameters of test subjects were recorded during the experiments.
Results
Increases in oxygen intake (VO2) during cold exposure were significantly greater without shivering in winter than they were in summer. Respiratory exchange ratio (RER) was significantly lower during thermoneutral baseline and cold exposure in winter than it was during the same periods in summer. In addition, there was a significant negative correlation between ΔVO2 and ΔRER.
Conclusions
Increase of VO2 without shivering indicated increase of NST, and decrease of RER depends on the metabolization of fat in winter. These results suggested that NST activity was activated by seasonal acclimatization, and individual variation of NST depends on individual variation of fat metabolism.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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