Influencia da amplitude em treinos intervalados, de igual intensidade média, no tempo de permanência com consumo de oxigênio próximo ao máximo, esforço percebido e diversão em jovens saudáveis

Abstract

Regular physical exercise has many health benefits, though the number of practitioners remains low. Among the main barriers to regular physical activity are lack of time and fun. Exercise can take the most fun and less perceived effort is more likely to be repeated. The improved VO2Máx is objective of the training is for health or performance. In this sense exercises capable of generating physiological adaptations and promote positive psychological sensations can facilitate, in theory, adherence to exercise and should be encouraged. Considering the importance of improving VO2Máx and the importance of perceptual responses to exercise, the main study of the present dissertation aims to compare, fun, subjective perception of exertion and responses of VO2 in interval (IT) and continuous (CT) aerobic training. For this the dissertation was divided in three works. The first consists of a review addressing aspects related to IT prescription. The second work approached with a validation of an equation to calculate the average intensity in IT. Finally, the last work compared perceptual and VO2 responses in TI and CT. Participants on the last study were, 15 college students who made five visits. At first, a maximum scaled test was performed. In subsequent visits were three HIT and TC the same average intensity and diferentes amplitudes. The RPE fun and VO2 variables were analyzed by ANOVA with repeated measures within-group and between groups. The CT showed higher mean VO2 on the two HIT with larger amplitudes. The HIT more broadly was perceived as more intense than the TC. There was no difference for the T @ 90 and the PSE and fun responses during activity. Based on the results, it can be concluded that different exercise models can lead the individual to achieve and maintain VO2 close to the maximum. Although TC has presented higher VO2 average, none of the training presented physiological superiority in T@90, or psychological. Training with larger amplitudes appear to reduce the average oxygen consumption, with possible impacts on the energy expenditure of the session. This study points to the need for expansion of methodological strategies aimed to investigate the superiority of training methods, from the incorporation of qualitative methodological approaches