Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus
King penguins (Aptenodytes patagonicus) may fast for up to 30 days during their breeding period. As such extended fasting may affect the relationship between the rate of O(2) consumption (Vo(2)) and heart rate (f(H)), five male king penguins were exercised at various speeds on repeated occasions dur...
Published in: | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.science/hal-00069538 https://doi.org/10.1152/ajpregu.00651.2003 |
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ftunivnantes:oai:HAL:hal-00069538v1 2023-05-15T17:03:53+02:00 Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus Fahlman, A. Handrich, Y. Woakes, A.J. Bost, C.A. Holder, R. Duchamp, C. Butler, P.J. School of Biosciences University of Birmingham Birmingham Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) School of Mathematics and Statistics Physiologie intégrative, cellulaire et moléculaire (PICM) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) 2004 https://hal.science/hal-00069538 https://doi.org/10.1152/ajpregu.00651.2003 en eng HAL CCSD American Physiological Society info:eu-repo/semantics/altIdentifier/doi/10.1152/ajpregu.00651.2003 hal-00069538 https://hal.science/hal-00069538 doi:10.1152/ajpregu.00651.2003 ISSN: 0002-9513 American Journal of Physiology https://hal.science/hal-00069538 American Journal of Physiology, 2004, 287, pp.R870-R877. ⟨10.1152/ajpregu.00651.2003⟩ Algorithms Birds Body Weight Carbon Dioxide Exertion Fasting Heart Rate Oxygen Consumption Respiratory Mechanics [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] info:eu-repo/semantics/article Journal articles 2004 ftunivnantes https://doi.org/10.1152/ajpregu.00651.2003 2023-02-08T00:29:42Z King penguins (Aptenodytes patagonicus) may fast for up to 30 days during their breeding period. As such extended fasting may affect the relationship between the rate of O(2) consumption (Vo(2)) and heart rate (f(H)), five male king penguins were exercised at various speeds on repeated occasions during a fasting period of 24-31 days. In addition, Vo(2) and f(H) were measured in the same animals during rest in cold air and water (4 degrees C). Vo(2) and f(H) at rest and Vo(2) during exercise decreased with fasting. There was a significant relation between Vo(2) and f(H) (r(2) = 0.56) that was improved by including speed, body mass (M(b)), number of days fasting (t), and a cross term between f(H) and t (r(2) = 0.92). It was concluded that there was a significant change in the Vo(2)-f(H) relationship with fasting during exercise. As t is measurable in the field and was shown to be significant and, therefore, a practical covariate, a regression equation for use when birds are ashore was obtained by removing speed and M(b). When this equation was used, predicted Vo(2) was in good agreement with the observed data, with an overall error of 3.0%. There was no change in the Vo(2)-f(H) relationship in penguins at rest in water. Article in Journal/Newspaper King Penguins Université de Nantes: HAL-UNIV-NANTES American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 287 4 R870 R877 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Algorithms Birds Body Weight Carbon Dioxide Exertion Fasting Heart Rate Oxygen Consumption Respiratory Mechanics [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] |
spellingShingle |
Algorithms Birds Body Weight Carbon Dioxide Exertion Fasting Heart Rate Oxygen Consumption Respiratory Mechanics [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] Fahlman, A. Handrich, Y. Woakes, A.J. Bost, C.A. Holder, R. Duchamp, C. Butler, P.J. Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
topic_facet |
Algorithms Birds Body Weight Carbon Dioxide Exertion Fasting Heart Rate Oxygen Consumption Respiratory Mechanics [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] |
description |
King penguins (Aptenodytes patagonicus) may fast for up to 30 days during their breeding period. As such extended fasting may affect the relationship between the rate of O(2) consumption (Vo(2)) and heart rate (f(H)), five male king penguins were exercised at various speeds on repeated occasions during a fasting period of 24-31 days. In addition, Vo(2) and f(H) were measured in the same animals during rest in cold air and water (4 degrees C). Vo(2) and f(H) at rest and Vo(2) during exercise decreased with fasting. There was a significant relation between Vo(2) and f(H) (r(2) = 0.56) that was improved by including speed, body mass (M(b)), number of days fasting (t), and a cross term between f(H) and t (r(2) = 0.92). It was concluded that there was a significant change in the Vo(2)-f(H) relationship with fasting during exercise. As t is measurable in the field and was shown to be significant and, therefore, a practical covariate, a regression equation for use when birds are ashore was obtained by removing speed and M(b). When this equation was used, predicted Vo(2) was in good agreement with the observed data, with an overall error of 3.0%. There was no change in the Vo(2)-f(H) relationship in penguins at rest in water. |
author2 |
School of Biosciences University of Birmingham Birmingham Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) School of Mathematics and Statistics Physiologie intégrative, cellulaire et moléculaire (PICM) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Fahlman, A. Handrich, Y. Woakes, A.J. Bost, C.A. Holder, R. Duchamp, C. Butler, P.J. |
author_facet |
Fahlman, A. Handrich, Y. Woakes, A.J. Bost, C.A. Holder, R. Duchamp, C. Butler, P.J. |
author_sort |
Fahlman, A. |
title |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
title_short |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
title_full |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
title_fullStr |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
title_full_unstemmed |
Effect of fasting on the VO2-fh relationship in king penguins, Aptenodytes patagonicus |
title_sort |
effect of fasting on the vo2-fh relationship in king penguins, aptenodytes patagonicus |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00069538 https://doi.org/10.1152/ajpregu.00651.2003 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 0002-9513 American Journal of Physiology https://hal.science/hal-00069538 American Journal of Physiology, 2004, 287, pp.R870-R877. ⟨10.1152/ajpregu.00651.2003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1152/ajpregu.00651.2003 hal-00069538 https://hal.science/hal-00069538 doi:10.1152/ajpregu.00651.2003 |
op_doi |
https://doi.org/10.1152/ajpregu.00651.2003 |
container_title |
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
container_volume |
287 |
container_issue |
4 |
container_start_page |
R870 |
op_container_end_page |
R877 |
_version_ |
1766057829189287936 |