@misc{indiciae4fdbdbaf5231,
  title = {Ventilatory threshold: measurement and variation with age.},
  author = {J D Posner and K M Gorman and H S Klein and C J Cline},
  year = {1987},
  doi = {10.1152/jappl.1987.63.4.1519},
  url = {https://pubmed.ncbi.nlm.nih.gov/3693190/},
  note = {Source identifier: 3693190}
}