Diferenças fisiológicas no teste de esforço em hiperóxia e normoxia

Abstract

Several authors report that oxygen breathing, in hyperoxics concentrations, provides some advantages such as increased physical performance. As a result of these studies, hyperoxia has been used in the preparation of elite athletes in order to obtain greater volume and intensity of running during the training. This way, this article relates a research aimed to investigate the effect of hyperoxia (35% O2) on physical performance and on the recovery in futsal players. To this end, nine futsal players (mean age = 22,8 DP = 2,6) underwent two tests of maximal effort (in normoxia and hyperoxia) anda variables measured such LC (lactate), HR (heart rate), time, distance and final running speed of the treadmill test. The hyperoxia (35% O2) was done before the maximal running test on the treadmill for 30 minutes, without identification of the situation the participants, if they were in (hyperoxia or normoxia). The study allowed to conclude that hyperoxia use (35% O2) for thirty minutes before physical effort was not enough to provide positive effects of performance increase or on the studied physiological variables.