@misc{indiciaeffb15e096641,
  title = {Effect of brief and prolonged exercise on left ventricular function.},
  author = {M T Upton and S K Rerych and J R Roeback and G E Newman and J M Douglas and A G Wallace and R H Jones},
  year = {1980},
  doi = {10.1016/0002-9149(80)90473-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/7377113/},
  note = {Source identifier: 7377113}
}