@misc{indiciaec88381ed7fb4,
  title = {Jogging in middle-aged men: effect on cardiovascular dynamics.},
  author = {R J Byrd and D P Smith and C B Shackleford},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4842913/},
  note = {Source identifier: 4842913}
}