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| Erholung der Herzfrequenz× | Respiratorisches Austauschverhältnis× | |
|---|---|---|
| Fachgebiet | Sportwissenschaft | Sportwissenschaft |
| Familie | Hypothesis test | Hypothesis test |
| Entstehungsjahr≠ | 1999 | 1949 |
| Urheber≠ | Cleveland Clinic Group | J. B. Weir |
| Typ≠ | exercise recovery test | expired gas analysis |
| Wegweisende Quelle≠ | Cole, C. R., Blackstone, E. H., Pashkow, F. J., Snader, C. E., & Lauer, M. S. (1999). Heart-rate recovery immediately after exercise as a predictor of mortality. New England Journal of Medicine, 341(18), 1351-1357. DOI ↗ | Weir, J. B. (1949). New methods for calculating metabolic rate with special reference to protein metabolism. Journal of Physiology, 109(1-2), 1-9. DOI ↗ |
| Aliasnamen | HRR, heart rate variability recovery, parasympathetic tone, autonomic recovery | RER, respiratory quotient, RQ, substrate oxidation ratio |
| Verwandt | 5 | 5 |
| Zusammenfassung≠ | Heart rate recovery (HRR) is the decline in heart rate during the first minutes following maximal or submaximal exercise, reflecting the reactivation of parasympathetic (vagal) tone. Introduced as a clinical predictor by Cole and colleagues (1999), HRR serves as a non-invasive biomarker of cardiac autonomic function and overall cardiovascular health. A rapid decline in heart rate after exertion indicates efficient parasympathetic reactivation and healthy autonomic nervous system balance. Conversely, blunted HRR (slow heart rate recovery) is associated with increased mortality risk, autonomic dysfunction, and poor exercise tolerance. | The respiratory exchange ratio (RER), also called the respiratory quotient (RQ), is the ratio of carbon dioxide produced to oxygen consumed during metabolism. Introduced by J. B. Weir (1949), RER is a non-invasive indirect measure of substrate utilization—indicating whether the body is primarily oxidizing carbohydrate, fat, or protein. RER values range from approximately 0.7 (pure fat oxidation) to 1.0 (pure carbohydrate oxidation) and higher under anaerobic conditions. By measuring exhaled and inhaled gases during exercise, RER reveals which fuel source predominates at different intensities, providing insights into metabolic flexibility and exercise physiology. |
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