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Effect of stimulus duration and recovery type on the metabolic and cardiorrespiratory responses during and intermittent exercise performed in the severe domain in active individuals.

Grant number: 10/02556-8
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): October 01, 2010
Effective date (End): August 31, 2013
Field of knowledge:Health Sciences - Physical Education
Principal Investigator:Camila Coelho Greco
Grantee:Luis Fabiano Barbosa
Host Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil

Abstract

At the severe domain, [La] and VO2 don't present stabilization and the maximal oxygen uptake (VO2max) may be attained at the end of the exercise even at intensities bellow VO2max, by the VO2 slow component (SC), which emerges around 80-110 s after the beginning of the exercise. During intermittent exercise, the previous stimulus and the recovery type may accelerate the VO2 kinetics and anticipate the SC appearance. With base on this information, the main objective of this study is to analyze and to compare the metabolic and cardiorrespiratory responses and the performance during an intermittent exercise in severe domain, at different conditions of stimulus' duration and recovery type, in active individuals. Healthy male subjects of 20-25 years will be divided into two groups (passive recovery - PR and active recovery - AR) and will be submitted to the following procedures: 1) progressive test until exhaustion in a cyclergometer to determine VO2max; 2) constant workload test at 90%VO2max until exhaustion, to determine the moment of the beginning, the duration and the amplitude of the SC, and; 3) two intermittent tests performed in random order, one constituted by stimulus with duration corresponding to the moment of the beginning of SC (T1), and one with stimulus with duration established at the moment corresponding to the half of SC duration (T2), to determine the parameters of SC as mentioned in the procedure 2. Blood lactate response and the parameters of VO2 kinetics will be analyzed throughout the constant workload tests, to verify if VO2max is attained, the time duration at VO2max the anaerobic and aerobic contributions during the exercise.

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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
BARBOSA, Luis Fabiano. Efeito da duração do estímulo e do tipo de recuperação nas respostas metabólicas e cardiorrespiratórias durante um exercício intermitente realizado no domínio severo em indivíduos ativos. 2013. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Biociências. Rio Claro Rio Claro.

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