COMPARISON OF METHODS FOR DETERMINATE THE HEART RATE VARIABILITY THRESHOLD IN INCREMENTAL TREADMILL TEST PROTOCOL
Felipe Person Malta1; Tiago Lazzaretti Fernandes2; Cyro Albuquerque Neto3; Jurandir Itizo Yanagihara1; Arnaldo José Hernandez2
1 Universidade de São Paulo; 2 Faculdade de Medicina da Universidade de São Paulo; 3 Centro Universitário da FEI
doi:10.20906/CPS/COB-2015-1259
Resumo
The aim of this research is to compare methods to determine the aerobic threshold from the heart rate variability, with an incremental test protocol. These methods were applied in 8 runners and compared to others metodologies. Four methods were applied to determine the aerobic and anaerobic threshold: (1) the difference between two consecutive intervals of SD1 is less than 1 ms; (2) SD1 value falls below 3 ms; (3) the both methods applied together; (4) the proposal is to analysis the change in the behavior of the mean standard deviation of R-R intervals curves. In each case, different formats have been shown for the same data (SD1 and MSD), whereas the part of the techniques, a new approach has been proposed for determining the anaerobic threshold of subjects. The HRVT is a promising technique, which is increasingly efficient displays for determine other thresholds. More tests are needed for a definitive conclusion of its efficiency.
Palavras-chave: heart rate variability; aerobic threshold; autonomous nervous system; incremental treadmill test protocol; heart rate