T. C. Ferreira Duarte, H. da Silva Lopes, and H. L. Morais Campos, “Physical activity, life purpose of community active elderly people: a cross-section study”, Rev Pesq Fisio, vol. 10, no. 4, pp. 591–598, Sep. 2020, doi: 10.17267/2238-2704rpf.v10i4.3052.