@misc{indiciae59b527770bb7,
  title = {Gradational step tests for assessing work capacity.},
  author = {F J Nagle and B Balke and J P Naughton},
  year = {1965},
  doi = {10.1152/jappl.1965.20.4.745},
  url = {https://pubmed.ncbi.nlm.nih.gov/5838725/},
  note = {Source identifier: 5838725}
}