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| Content Provider | Springer Nature Link |
|---|---|
| Author | Janský, Ladislav Vybíral, Stanislav Trubačová, Miloslava Okrouhlík, Jan |
| Copyright Year | 2007 |
| Abstract | To specify the role of adrenoceptors in mediating adrenergic functions after adaptation of humans to cold, effect of administration of increasing concentrations of β1 and β2 adrenomimetics (Dobutamine, Bricanyl) on resting metabolic rate, heart rate, systolic blood pressure, rectal and skin temperatures of control humans and of cold adapted winter swimmers was studied. Increase in metabolic rate, mediated by β1 and β2 adrenomimetics, was attenuated after cold adaptation, indicating downregulation of β1 and β2 adrenoceptors. Since cold adapted humans have greater capacity of nonshivering thermogenesis, than that mediated by both β1 and β2 adrenoceptors, the role of other subtypes of adrenoceptors in mediating nonshivering thermogenesis is anticipated. Heart rate increased after administration of the β2 agonist, but was not influenced by the β1 agonist. The significance of β2 adrenoceptors in mediating heart rate was depressed after cold adaptation. Data indicate that modifications of activity of β adrenoceptors play crucial role in mechanisms responsible for adaptation of humans to cold. |
| Starting Page | 131 |
| Ending Page | 135 |
| Page Count | 5 |
| File Format | |
| ISSN | 14396319 |
| Journal | European Journal of Applied Physiology |
| Volume Number | 104 |
| Issue Number | 2 |
| e-ISSN | 14396327 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2007-12-04 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Adrenergic receptors and functions Cold adaptation Humans Sports Medicine Occupational Medicine/Industrial Medicine Human Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science |
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