@misc{indiciaebbefe78b57af,
  title = {Comfortable effort level revisited.},
  author = {W S Brown and R J Morris and T Murry},
  year = {1996},
  doi = {10.1016/s0892-1997(96)80011-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/8865101/},
  note = {Source identifier: 8865101}
}