Sanchís-Soler, Gema, and MARIA ANTONIA PARRA-RIZO. “Impact of Physical Activity Level and Living Single or Widowed on Psychophysical Health Vulnerability in People over 60 Years of Age: Increased Socio-Health Care: Psychophysical Health Vulnerability in Older People”. Sport Psychology Notebooks, vol. 23, no. 2, Apr. 2023, pp. 273-91, doi:10.6018/cpd.515721.