@misc{indiciae9fcdc8c9d8ea,
  title = {Exercise with concentric and eccentric muscle contractions.},
  author = {H G Knuttgen and F B Petersen and K Klausen},
  year = {1971},
  doi = {10.1111/j.1651-2227.1971.tb05690.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5289796/},
  note = {Source identifier: 5289796}
}