Increase in oxygen consumption induced by selective spinal cord cooling in the exercising pigeon |
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Authors: | Shigeki Nomoto Emi Nomoto-Kozawa Masmi Iriki |
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Affiliation: | (1) Department of Physiology, Tokyo Metropolitan Institute of Gerontology, Sakaecho 35-2, 173 Itabashiku, Tokyo, Japan;(2) Department of Physiology, Medical University of Yamanashi, Tamahomura, Nakakomagun, 409-38 Yamanashi, Japan |
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Abstract: | Six domestic pigeons with chronically implanted spinal thermodes were exercised on a treadmill at neutral ambient temperature. During the exercise the spinal cord was cooled to 34.7±0.4°C (mean±S.E.M.). Oxygen consumption of the pigeons increased from 28.3 ±2.1 to 61.2±3.7 ml·min–1·kg–1 due to exercise per se, and superimposed cooling of the spinal cord during exercise induced an additional increase in oxygen consumption to 84.9±4.5 ml·min–1·kg–1. The result demonstrates that cooling of the spinal cord elicits shivering in exercising pigeons at thermoneutral conditions. |
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Keywords: | Oxygen consumption Spinal cooling Shivering Exercise Pigeon |
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