The aims of this study will be determine the maximum accumulated oxygen deficit (MAOD) in tethered swimming, investigate relationship between MAOD and indirect methods for assessing the anaerobic fitness and determine the validity of single test to provide aerobic and anaerobic parameters. For that, 14 swimmers state and national level will be evaluated. Prior to the beginning of the tests the athletes will be adapted to tethered swimming. The study will be conducted in twelve days with a minimum of 24 hours between tests. On the first day, the athletes will be subjected to a tethered swimming incremental test to determination of the maximum oxygen uptake intensity (iVO2MAX). Within three subsequent days the swimmers will performed submaximal efforts (50 - 95% of iVO2MAX) in tethered swimming, to determine the estimated energy demand to supra-maximal efforts (EeD). In the sixth day each subjective performed a tree minutes all-out tethered swimming effort (Emax3MINTS) and, after a passive recovery (eight minutes), an incremental test to determine the intensity of lactate minimum (LM) in tethered swimming. During the Emax3MINTS will be determined peak and mean forces, fatigue index, the critical force in tethered swimming (CFTS) and anaerobic swimming capacity (W `TS). Moreover, by monitoring of gas exchange, the alternative MAOD will be determined (MAODALT). Additionally, the Emax3MINTS will be considered as supra-maximum load for assess the conventional MAOD (MAODCON), determining the real energy demand for the average force in this effort (ReD). MAODCON will be the difference between EeD and ReD. After 48 h interval procedures will be repeated to test the reproducibility of measurements. The measurements of incremental test and MAODCON will be compared with LM and W `TS, respectively, use the Pearson correlation test and Bland and Altman plotting. Moreover, the Pearson correlation test will be use for assess the relationship between MAODCON and indirect methods for assessing the anaerobic fitness. Additionally, the Pearson correlation test, paired t-test student and Bland and Altman plotting will be used to assess the reproducibility of measurements. The significance level will be set at p<0,05.
News published in Agência FAPESP Newsletter about the scholarship: