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Analysis of the force and swimming pattern parameters in control and obese rats from a signs acquisition system, in tethered swimming. influence of the exercise intensity and body density

Grant number: 08/03445-5
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): March 01, 2009
Effective date (End): April 30, 2010
Field of knowledge:Health Sciences - Physical Education
Principal Investigator:Claudio Alexandre Gobatto
Grantee:Ivan Gustavo Masselli dos Reis
Host Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil


In the swimming protocols for rats, the exercise intensity is measured using overloads tied to the back of the animals, quantifying different intensities of effort. The most used methodology for prescription of the overload uses the rat body weight as parameter. So, this procedure of overload prescription can be susceptible to the imprecision in obese animals, since is not considered factors that can be relevant as the body composition and density of the animals. In this way, rats with larger amount of body fatty stores may show a smaller density, facilitating its flotation and swimming in a proportional smaller work intensity than normal mass rats. In the present study we propose the development of a new line of investigation using a different swimming protocol model for rats. So, in this model of evaluation, rats will swim in a tethered protocol, through which we hoped to improve the evaluation, in terms of sensibility in the overload determination (considering the corporal density), as in a new parameters of investigation associated to the swimming pattern of the animals. The rats will swim tethered through a rope elastic connected to a signs acquisition system (strain gage, data acquisition module - National Instruments, Labview software), that will be accomplished monitoring the swim impulse of the animals in a high frequency (1000 Hz) through all duration of the exercise. This study intend to use the new apparatus in the evaluation of the maximal lactate steady state in normal and induced to the obesity rats, through the cafeteria diet, to determinate the validity of this method and to test the sensibility comparing results among animals with different body compositions.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS REIS, IVAN G. M.; MARTINS, LUIZ E. B.; DE ARAUJO, GUSTAVO G.; GOBATTO, CLAUDIO A.. Forced Swim Reliability for Exercise Testing in Rats by a Tethered Swimming Apparatus. FRONTIERS IN PHYSIOLOGY, v. 9, . (11/08284-2, 08/03445-5)
MASSELLI DOS REIS, IVAN GUSTAVO; DE ARAUJO, GUSTAVO GOMES; GOBATTO, CLAUDIO ALEXANDRE. Maximal lactate steady state in swimming rats by a body density-related method of workload quantification. COMPARATIVE EXERCISE PHYSIOLOGY, v. 7, n. 4, p. 6-pg., . (08/03445-5, 11/08284-2)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
REIS, Ivan Gustavo Masselli dos. Análise de parâmetros de força e padrão de nado de ratos controles e obesos, a partir de um sistema de aquisição de sinais em natação atada: Influência da intensidade do exercício e da densidade corporal. 2010. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Biociências. Rio Claro Rio Claro.

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