| Pulmonary mechanics during treadmill exercise in race ponies. | |
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MedLine Citation:
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PMID: 3188391 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Exercise-induced variations in their ventilatory mechanics were studied in 8 healthy ponies 4.2 +/- 1.4 years old and weighing 282 +/- 11 kg. Airflow (V), tidal volume (VT), esophageal pressure, mask pressure and electrocardiogram were simultaneously recorded before, during and after a treadmill (incline 8.3 degrees) exercise which consisted of 2 min walking (1.5 m.sec-1), 3 min slow trotting (3.0 m.sec-1) and 3 min fast trotting (3.5 m.sec-1). The results of three consecutive daily measurements were averaged for each pony. Heart rate, minute volume (Ve), respiratory frequency (f) and peak inspiratory and expiratory V, mean inspiratory and expiratory V, and peak to peak changes in transpulmonary pressure (maxdPtp) increased linearly and significantly with increasing velocity (v) (R2 = 0.99). Tidal volume and the inspiratory time to total breathing time ratio showed a curvilinar relation with v (R2 = 0.99). Minute volume, maxdPtp, total pulmonary resistance (RL) and VT increased from rest to fast trot 6.7, 5.7, 1.5 and 1.6 times respectively. When the ponies stopped all these values decreased significantly. After 5 min recovery, the Ve was approximately doubled, VT and max dPtp unchanged and RL 30% smaller than their respective resting values. The exercise-induced increase in Ve was achieved by an increase in f at both low and high intensity of work. |
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Authors:
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T Art; P Lekeux |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Veterinary research communications Volume: 12 ISSN: 0165-7380 ISO Abbreviation: Vet. Res. Commun. Publication Date: 1988 |
Date Detail:
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Created Date: 1988-12-16 Completed Date: 1988-12-16 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8100520 Medline TA: Vet Res Commun Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 245-58 Citation Subset: IM; S |
Affiliation:
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Laboratory for Cardio-Pulmonary Functional Investigation, Faculty of Veterinary Medicine, State University of Liege, Brussels, Belgium. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Horses / physiology* Physical Exertion* Respiration* Respiratory Function Tests / veterinary Rest |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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