PMID: 20651458Jul 24, 2010Paper

Effects of different levels of protein intake and physical training on growth and nutritional status of young rats

Journal of Nutritional Science and Vitaminology
Sandra Maria Lima RibeiroJulio Tirapegui

Abstract

This study aimed to investigate the effects of physical training, and different levels of protein intake in the diet, on the growth and nutritional status of growing rats. Newly-weaned Wistar rats (n=48) were distributed into six experimental groups; three of them were subjected to physical swim training (1 h per day, 5 d per week, for 4 wk, after 2 wk of familiarization) and the other three were considered as controls (non-trained). Each pair of groups, trained and non-trained, received diets with a different level of protein in their composition: 14%, 21% or 28%. The animals were euthanized at the end of the training period and the following analyses were performed: proteoglycan synthesis as a biomarker of bone and cartilage growth, IGF-I (insulin-like growth factor-I) assay as a biomarker of growth and nutritional status, total RNA and protein concentration and protein synthesis measured in vivo using a large-dose phenylalanine method. As a main finding, increased dietary protein, combined with physical training, was able to improve neither tissue protein synthesis nor muscle growth. In addition, cartilage and bone growth seem to be deteriorated by the lower and the higher levels of protein intake. Our data allow us to concl...Continue Reading

References

Dec 1, 1972·The Proceedings of the Nutrition Society·D J Millward, P J Garlick
May 1, 1983·The British Journal of Nutrition·V R PreedyP J Garlick
Jul 27, 2000·Pediatric Nephrology : Journal of the International Pediatric Nephrology Association·C OhlssonO G Isaksson
Jul 27, 2000·Pediatric Nephrology : Journal of the International Pediatric Nephrology Association·S YakarD Le Roith
Mar 17, 2004·The Proceedings of the Nutrition Society·Fiona Ginty
May 18, 2004·The Journal of Adolescent Health : Official Publication of the Society for Adolescent Medicine·Ali BellRichard Hovey
Jun 25, 2004·The New England Journal of Medicine·Markus SchuelkeSe-Jin Lee
Dec 24, 2005·Journal of the American College of Nutrition·Jean-Philippe Bonjour
May 3, 2007·Medicine and Science in Sports and Exercise·Patricia Courtney GaineNancy R Rodriguez
May 19, 2007·The Journal of Nutritional Biochemistry·Koichi Nakazato, Hongsun Song
May 22, 2007·Physiology & Behavior·Kimberly P KinzigTimothy H Moran
Oct 3, 2007·Journal of the International Society of Sports Nutrition·Bill CampbellJose Antonio
Apr 4, 2008·Essays in Biochemistry·Henning Wackerhage, Aivaras Ratkevicius
May 9, 2008·The Journal of Biological Chemistry·Liliana Schaefer, Renato V Iozzo
Jul 1, 2008·Journal of the American Dietetic Association·Melanie J BoppBarbara J Nicklas
Jan 30, 2009·The American Journal of Clinical Nutrition·Ananda Hochstenbach-WaelenKlaas R Westerterp
Mar 13, 2009·Journal of the American Dietetic Association·Nancy R RodriguezUNKNOWN American College of Sports Medicine: Nutrition and Athletic Performance

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