Martins, G. S., L. L. Galvão, S. Tribess, J. Meneguci, and J. S. Virtuoso Júnior. “Isotemporal Substitution of Sleep or Sedentary Behavior With Physical Activity in the Context of Frailty Among Older Adults: A Cross-Sectional Study”. São Paulo Medical Journal, vol. 141, no. 1, Jan. 2023, pp. 12-19, https://periodicosapm.emnuvens.com.br/spmj/article/view/423.