@article{ferreira_rodrigues_soares_2017,  title={Quantity of Aerobic Exercise Training for the Improvement of Heart Rate Variability in Older Adults},  volume={30},  ISSN={2359-5647},  url={https://doi.org/10.5935/2359-4802.20170003},  DOI={10.5935/2359-4802.20170003},  number={2},  journal={International Journal of Cardiovascular Sciences},  publisher={Sociedade Brasileira de Cardiologia},  author={Ferreira, Luana Farinazzo and Rodrigues, Gabriel Dias and Soares, Pedro Paulo da Silva},  year={2017},  month={Mar},  pages={157–162} }