The entrainment of breathing rhythm to stride frequency in the dik-dik antelope (Rhynchotragus kirki) with observations on the thermoregulatory consequences
| Autor: | John M. Z. Kamau |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Male
biology Respiratory rate Respiration STRIDE Physical exercise General Medicine Thermoregulation biology.organism_classification Kinetics Animal science Oxygen Consumption Antelopes Dik-dik Environmental science Animals Respiratory system Entrainment (chronobiology) Locomotion Body Temperature Regulation |
| Zdroj: | Comparative biochemistry and physiology. A, Comparative physiology. 96(2) |
| ISSN: | 0300-9629 |
| Popis: | 1. 1. Three adult dik-dik antelopes with an average weight of 4.5 kg were used to investigate the rate of oxygen consumption (VO 2 ) during exercise and the entrainment of respiratory rate with stride frequencies at running velocities between 2–11 km/hr. 2. 2. The results of VO 2 and the metabolic cost of horizontal locomotion were found to agree with what would be expected of an animal of this size. 3. 3. Respiratory frequencies recorded during the most strenuous exercise were approximately 50% below the value observed when dik-diks are exposed to an ambient temperature ( T a ) of 42°C. 4. 4. Respiratory evaporative heat loss was estimated to account for only 4% of the total heat production during exercise. 5. 5. Respiratory frequencies were found to be entrained quite strongly to stride frequencies. The thermoregulatory consequences of this entrainment is discussed. |
| Databáze: | OpenAIRE |
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