Estudo de validação do aplicativo pulse HRV para a avaliação da variabilidade da frequência cardíaca em praticantes de exercícios físicos

Abstract

Currently, there are some scientifically validated applications for measuring Heart Rate Variability (HRV) in physical exercisers and athletes, but the aforementioned APPs were associated with a polar tape. Furthermore, to use them it is necessary to pay an already established amount, and this is a factor that can make access difficult. Therefore, it is essential to validate instruments with good accuracy and easy access that are freely available to measure HRV. The objective of this study is to evaluate the validity of the Pulse HRV smartphone application when compared to a portable electrocardiogram device for assessing HRV in physical exercisers. This is a cross-sectional study, carried out from August to October 2023, composed of physical exercise practitioners, without cardiovascular diseases. In the evaluations, the Pulse HRV application and a portable electrocardiogram were used simultaneously. For statistical analysis, the Spearman correlation test was used. 22 physical exercisers from 14 different sports were included. HR showed a very strong correlation (rho=0.971; p<0.001). In pNN50, SD2, LF and HF the magnitude was strong. HRV, rMSSD, SD1 resulted in a moderate correlation. The LF/HF relationship showed a weak correlation. The findings of this study suggest that the aforementioned application can be a valid and free option for recording HRV measurements in the HR, pNN50, SD2, LF and HF domains, as a strong correlation was found in them when comparing the APP to the ECG.