Efeitos da alternância entre exercícios aeróbicos e resistência exercício em diferentes sessões de exercício concorrente em respostas pressão arterial de atletas: um estudo randomizado

Abstract

Rev Bras Educ Fís Esporte, (São Paulo) 2016 Abr-Jun; 30(2): 245-53 • 245 Effects of the alternance between aerobic and resistance exercise IntroductionEffects of the alternance between aerobic and resistance exercise in different concurrent exercise sessions on blood pressure responses of healthy adults: a controlled and randomized study CDD. 20.ed. 796 Epidemiological and clinical studies have shown the bene ts of exercise to the cardiovascular system and total health [1][2][3][4] . is bene c cardiovascular e ect is related to the decrease of blood pressure, after performing an exercise session, to values lower than when at rest. A phenomenon named post-exercise hypotension (PEH) [5][6][7] , which can help to control and maintain blood pressure at normal levels [8][9][10] . It is known that sedentary behaviors, among other factors, are related to the development of hypertension. In Brazil, for instance, only 33.8% of the young adults are physically active, and approximately 24.1% of this population already present hypertension 11 .In this scenario, exercise appears as an alternative to the prevention and development of cardiovascular diseases, being considered a low cost, nonpharmacological intervention 12 which can be performed by individuals in every age group 13 . Several authors have reported the presence of PEH after one session of aerobic (AE) and resistance (RE) exercise [8][9][10] . However, there is more evidence of PEH after AE when compared to RE, since AE promotes a PEH of higher magnitude and duration 14 . Nonetheless, there is still little evidence on the e ect of the combination of AE and RE on blood pressure, being this combination named concurrent exercise (CE) 14 . AbstractAerobic exercise (AE) and resistance exercise (RE) have shown benefi ts in preventing and / or controlling blood pressure (BP), although the infl uences of these two models (concurrent exercise) in a single session of exercise on BP are still unknown to the individual. Therefore, the aim of the present study was to verify the effects of the alternating between AE and RE in different concurrent exercise sessions on BP responses. In order to do so, ten young male athletes (22.6 ± 3.78 years, 70.3 ± 5.89 kg, 175.96 ± 5.83 cm, 6.8 ± 2.38 % body fat) participated in the study. The tests consisted of four randomized protocols, the sessions consisted of AE followed by RE (AR), RE followed by AE (RA), circuit (CC) (ER and EA alternating intermittently) and control session (CO) (without exercise). AE was performed on a treadmill at 90% of indirect minimum lactate and RE was performed on a circuit at 90% of 12 RM, alternating muscle segments in six exercises. BP was measured in all protocols and post-exercise recovery period (PERP) every 15 minutes during one hour. Results showed a signifi cant decrease in systolic blood pressure (SBP) at the 45th minute of recovery (R45) and one-hour mean values of the PERP in the RA protocol when compared to its value at rest. Diastolic and mean BP showed no signifi cant differences. Thus, the RA...