| Can physical exercise during gestation attenuate the effects of a maternal perinatal low-protein diet on oxygen consumption in rats? | |
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MedLine Citation:
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PMID: 19482898 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A protocol of physical exercise, based on maximal oxygen uptake ((.)V(O2max)), for female rats before and during pregnancy was developed to evaluate the impact of a low-protein diet on oxygen consumption during gestation and growth rate of the offspring. Virgin female Wistar rats were divided into four groups as follows: untrained (NT, n =5); trained (T, n =5); untrained with low-protein diet (NT+LP, n =5); and trained with low-protein diet (T+LP, n =5). Trained rats were submitted to a protocol ofmoderate physical training on a treadmill over a period of 4 weeks (5 days week(-1) and 60 min day(-1), at 65% of (.)V(O2max)). At confirmation of pregnancy, the intensity and duration of the exercise was reduced. Low-protein groups received an 8% casein diet, and their peers received a 17% casein diet. The birthweight and growth rate of the pups up to the 90th day were recorded. Oxygen consumption ((.)V(O2)), CO2 production and respiratory exchange ratio (RER) were determined using an indirect open-circuit calorimeter. Exercise training increased (.)V(O2max) by about 20% when compared with the initial values (45.6+/-1.0 ml kg(-1) min(-1)). During gestation, all groups showed a progressive reduction in the resting (.)V(O2) values. Dams in the NT+LP group showed lower values of resting (.)V(O2) than those in the NT group. The growth rate of pups from low-protein-fed mothers was around 50% lower than that of their respective controls. The T group showed an increase in body weight from the 60th day onwards, while the NT+LP group presented a reduced body weight from weaning onwards. In conclusion, physical training attenuated the impact of the low-protein diet on oxygen consumption during gestation and on the growth rate of the offspring. |
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Authors:
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Marco Fidalgo Amorim; José Antonio dos Santos; Sandro Massao Hirabara; Elizabeth Nascimento; Sandra Lopes de Souza; Raul Manhães de Castro; Rui Curi; Carol Góis Leandro |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-05-29 |
Journal Detail:
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Title: Experimental physiology Volume: 94 ISSN: 1469-445X ISO Abbreviation: Exp. Physiol. Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-07-22 Completed Date: 2009-10-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9002940 Medline TA: Exp Physiol Country: England |
Other Details:
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Languages: eng Pagination: 906-13 Citation Subset: IM |
Affiliation:
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Department of Nutrition, Federal University of Pernambuco, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Diet, Protein-Restricted Female Growth Lactic Acid / blood Oxygen Consumption / drug effects* Physical Conditioning, Animal / physiology* Pregnancy Pregnancy, Animal / physiology* Prenatal Exposure Delayed Effects Rats Rats, Wistar |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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